Articles (Literature)
Contemporary French and Francophone Studies, 24:3, 322-329 , 2020
Céline, le cinématographe de la catastrophe, Contemporary French and Francophone Studies, 24:3, 3... more Céline, le cinématographe de la catastrophe, Contemporary French and Francophone Studies, 24:3, 322-329In Feerie pour une autre fois II (also titled Normance), Celine recounts the chaos engendered by the Allied bombing of Paris in April 1944, which killed 1,800 people in seven days. The novel, published in 1954, was a commercial flop. Among the reasons could be a narration that almost completely disappeared, or a traditional chronology that literally imploded. The writing seems subject to delirium and presents a body in direct contact with the surrounding destructions. This article underlines the difficulty for the storyteller to render such a catastrophe. Since Celine notes that the newly-born cinema and its technique overthrew the novel, this work argues that for Celine, the novelistic writing has no choice but to evolve and beat cinema on its own ground. Celine presents himself first as the impressionist of writing. Then, adding the soundtrack to the light and movement, he finally becomes the true cinematographer of literature.
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The French Review Vol. 93, n°4, pp. 136-44, May 2020
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Contemporary French & Francophone Studies : SITES, Vol 23, Issue 1, 2019, pp. 86-94 , 2019
A Haitian writer who left his island at the age of twenty-one, Jean-Claude Charles was a particul... more A Haitian writer who left his island at the age of twenty-one, Jean-Claude Charles was a particular type of exile. As he explains in his concept of "rooting" that he himself created, he did not get established anywhere else, as did many Haitian refugees, he kept on moving. His wandering took him especially to France and the United States. Many thought that Charles then became uprooted. Yet we will show that it is precisely in his wandering that Charles managed to find new roots, to "take root." Metaphorically and by writing, he established a bridge between the two continents.Keywords: Enracinerrance, Jean-Claude Charles, identité, écriture, pont, racine
https://sites.uconn.edu/volume-23-issue-1/#
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The French Review , 2019
The French Review, Vol 93.2, 2019
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Romances notes, pp. 415-27, Vol. 58, Number 3, 2018
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Journal of Haitian Studies, Volume 24, Number 1, Spring 2018, pp. 136-145 , 2018
A l'occasion du colloque "Blues Writing: Jean-Claude Charles", Florida State University, Institut... more A l'occasion du colloque "Blues Writing: Jean-Claude Charles", Florida State University, Institut Winthrop-King, March 22-24, 2018, Tallahasse, Florida
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Book Chapters (Literature)
Liverpool University Press , 2021
Jean-Claude Charles's writing does not leave the reader indifferent. From one novel to another, i... more Jean-Claude Charles's writing does not leave the reader indifferent. From one novel to another, it is always particular, surprising, even confusing. With Bamboola Bamboche, published in 1984, it reaches its peak. The narrative follows one intoxicated night in the narrator's life, from midnight to seven in the morning. As a journalist, he investigates the disappearance of an exiled Haitian writer who is probably dead. He also recounts his love for Gina, a young woman involved in planning a revolution. The whole plot seems to take place in a bar, the Bamboola Bamboche, on an unnamed Caribbean island, but the narrative... MUNRO, MARTIN, and ELIANA VÄ‚GÄ‚LÄ‚U. Jean-Claude Charles: A Reader's Guide. Liverpool University Press, 2022. JSTOR, https://doi.org/10.2307/j.ctv2hbr234. Accessed 30 Aug. 2022.
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Lexington Books , 2020
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Conferences (Literature)
20th and 21st Century French and Francophone Studies International Colloquium , 2022
University of Pittsburgh, Pittsburgh, PA, March 24-26, 2022
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Tokyo Stories: Writing the World with Michaël Ferrier , 2022
Winthrop-King Institute, Florida State University, Tallahassee, FL March 20-22, 2022
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Enchantment/Disenchantment, 45th Annual Nineteenth-Century French Studies Colloquium , 2019
NCFS 2019, Sarasota, FL, October 31 – November 2, 2019
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Contemporary French Civilization , 2019
Tucson, AZ, 29-31 August 2019
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31th Annual Conference, Haitian Studies in Changing Climates , 2019
Gainesville, FL, 17-19 November 2019
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Does "la lutte continue"? The Global Afterlives of May '68 Winthrop-King Institute International... more Does "la lutte continue"? The Global Afterlives of May '68
Winthrop-King Institute International Conference, 28-29 March 2019- Florida State University
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"Catastrophes, Cataclysms, Adaptation & Survival" - 20th & 21st Century French & Francophone Stu... more "Catastrophes, Cataclysms, Adaptation & Survival" - 20th & 21st Century French &
Francophone Studies International Colloquium 36th Edition: Oklahoma City, March 2019
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30th Annual Conference Haitian Studies at the Crossroads: Integrating the Humanities, Arts, Reli... more 30th Annual Conference
Haitian Studies at the Crossroads: Integrating the Humanities, Arts, Religions, Technology, and Sciences
8-10 November 2018
Port-au-Prince, Haiti
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MEMOIR AND MANIFESTO: LIFE WRITING AND/AS RESISTANCE SAMLA 90: Fighters from the Margins: ... more MEMOIR AND MANIFESTO: LIFE WRITING AND/AS RESISTANCE
SAMLA 90: Fighters from the Margins: Socio-Political Activists and Their Allies
November 2–4, 2018 ◆ Birmingham, Alabama
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Colloque International des Études Françaises et Francophones des 20ème et 21ème siècles - Sous le... more Colloque International des Études Françaises et Francophones des 20ème et 21ème siècles - Sous les pavés, 12-14 avril 2018 - Brown University
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17th International Conference on Caribbean Literature November 1-3, 2017 Nassau, Bahamas
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WWI Symposium, 100 Years After World War I: Local to Global Impact of an International War, Unive... more WWI Symposium, 100 Years After World War I: Local to Global Impact of an International War, University of South Carolina Upstate, Spartanburg, South Carolina, USA, April 6 and 7, 2017Céline a déjà trente-huit ans lorsque paraît Voyage au bout de la nuit, comme s'il avait dû prendre du recul avant de publier un roman en mesure de retranscrire toute l'horreur de la Grande Guerre. Vis-à -vis des innombrables mémoires ou souvenirs d'anciens combattants publiés au cours des années 20, Voyage au bout de la nuit bouleverse radicalement les lois du genre du roman de guerre. Il n'expose notamment ni les prémices, ni la fin du conflit, comme si celui-ci ne se terminait jamais vraiment pour le héros. Et dès le début, la guerre est déjà là . Elle se présente ainsi, puis s'éclipse de manière tout aussi surprenante dans le récit : « On est retournés chacun dans la guerre. Et puis il s'est passé des choses et encore des choses, qu'il est pas facile de raconter à présent, à cause que ceux d'aujourd'hui ne les comprendraient déjà plus » (Voyage 47). Entre les deux, c'est la narration du quotidien du soldat à la guerre qui s'étend sur quatre chapitres dans des descriptions crues et tragiques à la fois.
Céline décrit l'irréalité de l'arrière du point de vue d'un soldat comme revenu d'outre-tombe , revenu du « monde à l'envers » (Voyage 64). Ce faisant, il nous met souvent face à une forme d'ambivalence. Celle de la maladie d'abord : l'homme en bonne santé est un malade en sursis. Et celle de la guerre également, qui n'est jamais pour lui que la globalisation d'un rite sacrificiel millénaire. Alors son corolaire, la paix, n'est qu'une guerre civile « en suspens » qui ne conduira Bardamu qu'à y retrouver les symptômes morbides de la guerre, que ce soit dans la brousse coloniale ou dans la misère urbaine de New-York.
Dans un article consacré au Journal d'un homme de quarante ans , Jean Giono forge l'expression « la génération des hommes au sang noir » pour désigner ces « survivants de la guerre de 14 qui ne se remettent pas d'avoir vu inutilement mourir tant de leurs camarades » .
Nous proposons de voir l'impact de la première guerre mondiale sur Céline à travers Bardamu. Que ce soit le Bardamu soldat marqué par le sang dans les atroces scènes de guerre d'abord, où l'homme est littéralement mis en pièce sur le champ de bataille vu comme une boucherie, un abattoir ou le Bardamu revenu du front, rescapé mais pas indemne, pour qui la moindre évocation du sang ravive à sa mémoire les scènes traumatiques . Cette description ultra-réaliste et sanglante de la guerre illustre la vision que Céline a de la vie, où l'instinct de mort de l'humain est exacerbé par ce contexte particulier.
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Contemporary French and Francophone Studies, 24:3, 322-329 , 2020
Céline, le cinématographe de la catastrophe, Contemporary French and Francophone Studies, 24:3, 3... more Céline, le cinématographe de la catastrophe, Contemporary French and Francophone Studies, 24:3, 322-329In Feerie pour une autre fois II (also titled Normance), Celine recounts the chaos engendered by the Allied bombing of Paris in April 1944, which killed 1,800 people in seven days. The novel, published in 1954, was a commercial flop. Among the reasons could be a narration that almost completely disappeared, or a traditional chronology that literally imploded. The writing seems subject to delirium and presents a body in direct contact with the surrounding destructions. This article underlines the difficulty for the storyteller to render such a catastrophe. Since Celine notes that the newly-born cinema and its technique overthrew the novel, this work argues that for Celine, the novelistic writing has no choice but to evolve and beat cinema on its own ground. Celine presents himself first as the impressionist of writing. Then, adding the soundtrack to the light and movement, he finally becomes the true cinematographer of literature.
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The French Review Vol. 93, n°4, pp. 136-44, May 2020
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Contemporary French & Francophone Studies : SITES, Vol 23, Issue 1, 2019, pp. 86-94 , 2019
A Haitian writer who left his island at the age of twenty-one, Jean-Claude Charles was a particul... more A Haitian writer who left his island at the age of twenty-one, Jean-Claude Charles was a particular type of exile. As he explains in his concept of "rooting" that he himself created, he did not get established anywhere else, as did many Haitian refugees, he kept on moving. His wandering took him especially to France and the United States. Many thought that Charles then became uprooted. Yet we will show that it is precisely in his wandering that Charles managed to find new roots, to "take root." Metaphorically and by writing, he established a bridge between the two continents.Keywords: Enracinerrance, Jean-Claude Charles, identité, écriture, pont, racine
https://sites.uconn.edu/volume-23-issue-1/#
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The French Review , 2019
The French Review, Vol 93.2, 2019
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Romances notes, pp. 415-27, Vol. 58, Number 3, 2018
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Journal of Haitian Studies, Volume 24, Number 1, Spring 2018, pp. 136-145 , 2018
A l'occasion du colloque "Blues Writing: Jean-Claude Charles", Florida State University, Institut... more A l'occasion du colloque "Blues Writing: Jean-Claude Charles", Florida State University, Institut Winthrop-King, March 22-24, 2018, Tallahasse, Florida
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Liverpool University Press , 2021
Jean-Claude Charles's writing does not leave the reader indifferent. From one novel to another, i... more Jean-Claude Charles's writing does not leave the reader indifferent. From one novel to another, it is always particular, surprising, even confusing. With Bamboola Bamboche, published in 1984, it reaches its peak. The narrative follows one intoxicated night in the narrator's life, from midnight to seven in the morning. As a journalist, he investigates the disappearance of an exiled Haitian writer who is probably dead. He also recounts his love for Gina, a young woman involved in planning a revolution. The whole plot seems to take place in a bar, the Bamboola Bamboche, on an unnamed Caribbean island, but the narrative... MUNRO, MARTIN, and ELIANA VÄ‚GÄ‚LÄ‚U. Jean-Claude Charles: A Reader's Guide. Liverpool University Press, 2022. JSTOR, https://doi.org/10.2307/j.ctv2hbr234. Accessed 30 Aug. 2022.
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Lexington Books , 2020
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20th and 21st Century French and Francophone Studies International Colloquium , 2022
University of Pittsburgh, Pittsburgh, PA, March 24-26, 2022
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Tokyo Stories: Writing the World with Michaël Ferrier , 2022
Winthrop-King Institute, Florida State University, Tallahassee, FL March 20-22, 2022
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Enchantment/Disenchantment, 45th Annual Nineteenth-Century French Studies Colloquium , 2019
NCFS 2019, Sarasota, FL, October 31 – November 2, 2019
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Contemporary French Civilization , 2019
Tucson, AZ, 29-31 August 2019
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31th Annual Conference, Haitian Studies in Changing Climates , 2019
Gainesville, FL, 17-19 November 2019
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Does "la lutte continue"? The Global Afterlives of May '68 Winthrop-King Institute International... more Does "la lutte continue"? The Global Afterlives of May '68
Winthrop-King Institute International Conference, 28-29 March 2019- Florida State University
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"Catastrophes, Cataclysms, Adaptation & Survival" - 20th & 21st Century French & Francophone Stu... more "Catastrophes, Cataclysms, Adaptation & Survival" - 20th & 21st Century French &
Francophone Studies International Colloquium 36th Edition: Oklahoma City, March 2019
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30th Annual Conference Haitian Studies at the Crossroads: Integrating the Humanities, Arts, Reli... more 30th Annual Conference
Haitian Studies at the Crossroads: Integrating the Humanities, Arts, Religions, Technology, and Sciences
8-10 November 2018
Port-au-Prince, Haiti
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MEMOIR AND MANIFESTO: LIFE WRITING AND/AS RESISTANCE SAMLA 90: Fighters from the Margins: ... more MEMOIR AND MANIFESTO: LIFE WRITING AND/AS RESISTANCE
SAMLA 90: Fighters from the Margins: Socio-Political Activists and Their Allies
November 2–4, 2018 ◆ Birmingham, Alabama
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Colloque International des Études Françaises et Francophones des 20ème et 21ème siècles - Sous le... more Colloque International des Études Françaises et Francophones des 20ème et 21ème siècles - Sous les pavés, 12-14 avril 2018 - Brown University
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17th International Conference on Caribbean Literature November 1-3, 2017 Nassau, Bahamas
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WWI Symposium, 100 Years After World War I: Local to Global Impact of an International War, Unive... more WWI Symposium, 100 Years After World War I: Local to Global Impact of an International War, University of South Carolina Upstate, Spartanburg, South Carolina, USA, April 6 and 7, 2017Céline a déjà trente-huit ans lorsque paraît Voyage au bout de la nuit, comme s'il avait dû prendre du recul avant de publier un roman en mesure de retranscrire toute l'horreur de la Grande Guerre. Vis-à -vis des innombrables mémoires ou souvenirs d'anciens combattants publiés au cours des années 20, Voyage au bout de la nuit bouleverse radicalement les lois du genre du roman de guerre. Il n'expose notamment ni les prémices, ni la fin du conflit, comme si celui-ci ne se terminait jamais vraiment pour le héros. Et dès le début, la guerre est déjà là . Elle se présente ainsi, puis s'éclipse de manière tout aussi surprenante dans le récit : « On est retournés chacun dans la guerre. Et puis il s'est passé des choses et encore des choses, qu'il est pas facile de raconter à présent, à cause que ceux d'aujourd'hui ne les comprendraient déjà plus » (Voyage 47). Entre les deux, c'est la narration du quotidien du soldat à la guerre qui s'étend sur quatre chapitres dans des descriptions crues et tragiques à la fois.
Céline décrit l'irréalité de l'arrière du point de vue d'un soldat comme revenu d'outre-tombe , revenu du « monde à l'envers » (Voyage 64). Ce faisant, il nous met souvent face à une forme d'ambivalence. Celle de la maladie d'abord : l'homme en bonne santé est un malade en sursis. Et celle de la guerre également, qui n'est jamais pour lui que la globalisation d'un rite sacrificiel millénaire. Alors son corolaire, la paix, n'est qu'une guerre civile « en suspens » qui ne conduira Bardamu qu'à y retrouver les symptômes morbides de la guerre, que ce soit dans la brousse coloniale ou dans la misère urbaine de New-York.
Dans un article consacré au Journal d'un homme de quarante ans , Jean Giono forge l'expression « la génération des hommes au sang noir » pour désigner ces « survivants de la guerre de 14 qui ne se remettent pas d'avoir vu inutilement mourir tant de leurs camarades » .
Nous proposons de voir l'impact de la première guerre mondiale sur Céline à travers Bardamu. Que ce soit le Bardamu soldat marqué par le sang dans les atroces scènes de guerre d'abord, où l'homme est littéralement mis en pièce sur le champ de bataille vu comme une boucherie, un abattoir ou le Bardamu revenu du front, rescapé mais pas indemne, pour qui la moindre évocation du sang ravive à sa mémoire les scènes traumatiques . Cette description ultra-réaliste et sanglante de la guerre illustre la vision que Céline a de la vie, où l'instinct de mort de l'humain est exacerbé par ce contexte particulier.
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"Le sang de la mort de Louis-Ferdinand Céline", 2017 KFLC: The Languages, Literatures, and Cultur... more "Le sang de la mort de Louis-Ferdinand Céline", 2017 KFLC: The Languages, Literatures, and Cultures Conference, University of Kentucky, Lexington, Kentucky, April 20-22, 2014 Cet article présente un objet peu discuté et pourtant omniprésent dans Voyage au bout de la nuit de Louis-Ferdinand Céline. Le personnage central, Bardamu, est sans cesse confronté au sang, que ce soit lors de l'épisode de la guerre ou lorsqu'il se retrouve médecin de quartier au chevet de femmes saignant tragiquement. Ces occurrences nous intéressent particulièrement puisqu'elles nous permettent de montrer que le sang qui coule du sexe féminin, qu'il s'agisse de simples pertes, d'un avortement, ou même d'un accouchement, est toujours pour Céline vecteur de mort, et reflète la vision, que l'on définira thanatophile, de l'auteur pour l'existence.
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REVIEW OF SCIENTIFIC INSTRUMENTS , 2011
Thermal characterization of materials, especially civil engineering materials, in the way of nond... more Thermal characterization of materials, especially civil engineering materials, in the way of nondestructive methods, are more and more widespread. In this article, we show an original point of view to describe the used method, the thermal waves, to obtain the thermal impedance of the studied system, using a specific sensor – a fluxmeter. The identification technique, based on a frequential approach, is optimized by applying a random input to the system. This kind of random heating is shown to provide a frequency range where the thermal effusivity is able to be identified and not correlated to another parameter. The strength of the method is also the determination of the contact resistance of the system, that allows to validate the identification process. Experimental results obtained from a sample with well-known thermal properties (polyvinyl chloride) are used to validate the proposed method.
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International Journal of Thermophysics , 2009
A technique for determining thermophysical properties is proposed and applied to a sample of conc... more A technique for determining thermophysical properties is proposed and applied to a sample of concrete by taking advantage of pseudo-random signals. Data are treated in the frequency domain. A new approach is developed for estimating the thermal impedance based on the formalism of non-integer order models. An experimental setup consisting of a heat flux and temperature sensor arranged in contact with a material assuming a semi-infinite boundary condition is studied. The theoretical expression for such a thermal impedance takes into account the thermal capacity of the sensor and the contact resistance and emphasizes fractional orders in the behavior model. Keywords Concrete · Contact resistance · Frequency domain · Non-integer order models · Thermal impedance · Thermophysical parameters List of Symbols a Thermal diffusivity (m 2 · s −1) b Thermal effusivity (J · m −2 · s −1/2 · K −1) ¯ b Average value of the thermal effusivity c Specific heat capacity (J · kg −1 · K −1) C Thermal capacity of the system (J · m −2 · K −1) C f Fluxmeter capacity (J · m −2 · K −1)
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Journal of Renewable and Sustainable Energy , 2012
In a period of surging energy prices, resource depletion, and concerns over the use of nuclear po... more In a period of surging energy prices, resource depletion, and concerns over the use of nuclear power, energy savings are paramount and a major component of ongoing sustainable development. Geothermal energy is the energy stored in the form of heat beneath the surface of the Earth. Related to this, the thermal properties of soils are of great importance, particularly with regard to the modern trends of utilizing the subsurface for transmission of either heated fluids or high power currents. For example, in geothermal hydrology or geotechnical engineering applications, the thermal conductivity must be determined to assess the energy potential of the soil. The presence of water (groundwater, rainfall, natural moisture) improves both the thermal conductivity and thermal capacity fields. We present an original method—based on a thermal study and the use of non-integer order models—to determine the thermophysical parameters of different soils in near-surface layers, and link them to the water content variations of different soils. The results are compared with those obtained using a capacitive profile probe.
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Energy and Buildings , 2014
Current environmental concerns have promoted efforts to reduce the consumption of energy. In movi... more Current environmental concerns have promoted efforts to reduce the consumption of energy. In moving towards improving existing buildings, the study of the thermal behaviour of a wall is not easy because its actual thermophysical properties are not well-known. These parameters are nevertheless fundamental for the economic optimisation of building refurbishment or for the verification of their performance in situ. It is thus important to be able to characterize existing building walls.The objective of our study was to develop a method to thermally characterize a wall adapted to in situ applications based on an active approach. The principle of identification consists of thermally examining an access surface by applying a heat flux and studying the response in terms of the temperature recorded by infrared thermography on the opposite surface. Based on signals of flux and of temperatures measured at the edges of the wall, the thermophysical properties (thermal conductivity and volumetric heat) of the wall are estimated by inverse method.
The method was applied first to a homogeneous gypsum-tile panel in laboratory. The results were compared to reference values obtained from a classical procedure. Then, the method has been implemented in situ on a homogeneous reinforced concrete shell.
Keywords
Gypsum tile ; Inverse method ; In situ wall thermal properties ; Infrared thermography ; Thermophysical properties ; Building energy saving ; Experimental methodology
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Construction and Building Materials , 2014
Abstract This article presents a light and easy to use method for simultaneous determination of t... more Abstract
This article presents a light and easy to use method for simultaneous determination of thermal conductivity and volumetric heat capacity of a construction material without any control of boundary conditions. The material to be characterized is placed between two layers of materials with known thermophysical properties. Thermocouple probes are placed at the different interfaces and record the variations in temperature when the whole multilayer is subjected to stimulation. An inverse method based on a numerical model allows us to simultaneously identify the unknown thermal properties. This method was tested respectively on samples of polyvinyl chloride, expanded polystyrene, plaster and concrete.Keywords
Thermophysical properties ; Thermal characterization ; Inverse heat transfer ; Construction materials ; Parameter estimation
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Composites Part B: Engineering , 2015
Abstract Carbon Fiber Reinforced Polymers (CFRPs) have been increasingly employed for structural ... more Abstract
Carbon Fiber Reinforced Polymers (CFRPs) have been increasingly employed for structural strengthening, and are attached to structures using bonding adhesives. The aim of this work is to characterize defects in the bond between CFRP and concrete (after they are located by pulse infrared thermography), and assign the defects a "numerical value" (ranging from 0 for a complete air–gap to 1 for a fully glued bond). Quantitative characterization is performed by measuring the thermal impedance, and then identifying the thermophysical parameters of the system through fitting the measured impedance to a theoretical model. An inversion procedure is carried out to estimate the unknown parameters, without prior knowledge of sample properties. In particular, it is possible to estimate more accurately both the amount of glue within a defect and the thermal contact resistance.Keywords
Debonding ; Defects ; Non-destructive testing ; Thermal analysis
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Applied Thermal Engineering , 2015
Abstract A new ground heat exchanger (GHEX) assembled in a ground source heat pump (GSHP) system ... more Abstract
A new ground heat exchanger (GHEX) assembled in a ground source heat pump (GSHP) system has been devised, which is equipped in a structural pile, and thus called an "energy pile". In this study, six large-diameter cast-in-place energy piles that encased various types of heat exchange pipes (i.e., three parallel U-types with 5 pairs, 8 pairs and 10 pairs; two coil-types with 200 mm coil pitch and 500 mm coil pitch; and S-type) were constructed in a test bed, and the constructability of each type of the energy pile was compared. Additionally, a 30 m-deep closed-loop vertical GHEX was separately constructed to compare the thermal performance and economic feasibility with the energy piles. A series of in-situ thermal response tests (TRTs) was performed to evaluate the relative heat exchange efficiency of each energy pile according to the various heat exchange pipe configurations. The relative heat exchange efficiency obtained in the cast-in-place energy piles and the down-sized 30 m-deep closed-loop vertical GHEX was normalized by the pile length (or borehole length) and the total heat exchange pipe length. The result from the in-situ tests indicates that the longer the heat exchange pipe installed, the higher heat exchange efficiency per pile length. However, in the case of tight layouts of the heat exchange pipe, thermal interference occurs between adjacent pipe loops, which decreases heat exchange efficiency. Economic feasibility of the energy piles was evaluated, considering the material and installation costs for assembling the heat exchange pipe with consideration of the heat exchange efficiency. It is concluded that the coil-type cast-in-place energy pile can achieve sufficient capacity for heat exchange, compared with the closed-loop vertical GHEX.Keywords
Closed-loop vertical ground heat exchanger ; Energy pile ; In-situ thermal response test ; Constructability of energy pile ; Relative heat exchange efficiency
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Transport in Porous Media , 2016
This article describes a new thermophysical characterization method for granular materials. It is... more This article describes a new thermophysical characterization method for granular materials. It is based on the creation of a cylindrical probe, fitted with peripheral flux and temperature sensors. These sensors record changes in thermal variables in the case of cylindrically symmetrical heat diffusion. A numerical exchange model integrated into an inversion algorithm identifies the thermal effusivity and diffusivity of the material being tested and the sensor/material contact resistance. In this first study, the method was applied to dry sand.
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Journal of Building Engineering Volume 14, November 2017, Pages 15-23 , 2017
Old houses (before 1948) in Northern Europe have a lot of architectural similarities and one of t... more Old houses (before 1948) in Northern Europe have a lot of architectural similarities and one of the most common relates to thick brick walls. The study of thermal transfer in old massive walls provides a better understanding of their thermal behavior and to quantify the savings of energy following a possible thermal insulation. The specificity of these walls resides in the fact that their materials were manufactured in a period when the thermal standards were non-existent and therefore their thermal properties are not precisely known. This paper presents two experimental approaches for determining the thermal properties of masonry walls. In the first method, the materials composing the wall were characterized separately and then equivalent thermal resistance and thermal capacity were deduced; in the second one thermal transfer in an experimental wall was studied by imposing thermal conditions from one side of the wall through a heating box, the other side remaining exposed to ambient lab thermal conditions. The experimental wall is exposed to two different types of boundary conditions through a wooden insulated box which contains a radiator: the constant temperature (steady state mode) to determine the thermal resistances of the system and the sinusoidal temperature (harmonic mode) to determine the thermal capacity of the wall.Keywords
Thermal properties, Steady state thermal transfer, Harmonic thermal transfer, Heating box
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Energy Volume 118, 1 January 2017, Pages 297-311 An energy pile equipped with a W-type heat exch... more Energy
Volume 118, 1 January 2017, Pages 297-311An energy pile equipped with a W-type heat exchange pipe was constructed in reclaimed soft ground, which is fabricated in a large-diameter cast-in-place pile. The diameter of the energy pile is 1.5 m and the drilled depth reaches to a 60 m whilst the heat exchange pipe is inserted to 30 m depth from the ground surface. To evaluate thermal performance of the constructed energy pile, a series of in-situ thermal performance tests was carried out by controlling intermittent cooling and heating loads, in which the inlet and outlet fluid temperatures, flow rate, and temperatures inside the energy pile were recorded. The test results show that a large-diameter cast-in-place energy pile can provide sufficient heat exchange compared with other types of ground heat exchangers. A series of CFD analyses was performed to simulate the thermal performance tests and provide the designer with preliminary estimation of thermal performance of energy piles. The numerical model was verified by comparing with the field measurements. Using the developed numerical model, the thermal behavior of the energy piles was evaluated with various parameters, and effects of the thermal interference and the temperature difference between the fluid and ground formation on the thermal performance were discussed
DOI: 10.1016/j.energy.2016.12.045
Keywords
Energy pile Large-diameter cast-in-place energy pile In-situ thermal performance test Computational fluid dynamics (CFD) analysis Heat exchange rate
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1st International Conference on Mechanics of Composites - Stony Brook University (NY – USA) , 2014
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International Conference "Thermophysical and Mechanical Properties ofAdvanced Materials" , 2015
In building, the actual work lies in the thermal characterization scope. An autoclaved aerated co... more In building, the actual work lies in the thermal characterization scope. An autoclaved aerated concrete (ACC) panel was initially saturated and equipped with thermocouples placed at the boundaries and
through the thickness. The tested panel is placed between two test environments. The first environment reproduces inside building conditions, mean values are: temperature » 22°C and humidity » 35%. The second one reproduces summer outside conditions, mean values are: temperature » 26°C and humidity » 80%. 20 days thermocouples temperatures recorded were exploited numerically. The numerical
analysis is achieved thanks to a Matlab built algorithm. This allows moisture content monitoring through the panel by estimation. The numerical algorithm connects a difference finite numerical model -for heat transfer simulation- to a Levenberg Marquardt estimation algorithm. Before performing tests on the panel, prior tests were conducted on an ACC block. Prior tests are based on guarded hot plate and heat flow meter methods. This provides the thermophysical properties (thermal conductivity: l and volumetric heat capacity rC) evolution related to moisture content (w). Thus, thanks to the prior experimental work, empirical relationships between these different properties were defined: l(w) and rC(w). The last two relationships are incorporated in the numerical model to connect the parameters (l, rC, w) and thus solve heat transfer equation.
The obtained promising results are a crucial step before the next validation steps - performing other laboratory or in-situ tests applied on different materials - of the developed method.
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ASET 2015 , 2015
This paper presents a numerical modeling approach for hygrothermal behavior of bio-based material... more This paper presents a numerical modeling approach for hygrothermal behavior of bio-based materials. The mathematical model describes the heat and moisture transfer through a wall of biobased materials. The studied wall is subjected to both convective heat transfer and moisture flux transfer with the surroundings. Moreover, a parametric study was performed to analyze the effect of varying the model's key parameters on the overall thermal performance of the wall. Consequently, an optimal proposal can be suggested to attain the main objective, which is
reducing energy consumption for winter heating and summer cooling
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Third Intl. Conf. On Advances in Applied Science and Environmental Technology - ASET 2015
— A thermal analysis method based on inverse heat transfer is presented to estimate moisture cont... more — A thermal analysis method based on inverse heat transfer is presented to estimate moisture content. The inverse method is based on experimental and numerical studies. A sand multilayer at different moisture contents is thermally excited. Thermocouple probes are placed at different positions in the thickness, and at the extremities of the multilayer, and record temperature variations during a test. A numerical heat transfer model associated with a parametric estimation algorithm allows layers' moisture contents identification. Results are obtained thanks to previous tests that provide empirical relationships between the thermophysical properties and the moisture content.Third Intl. Conf. On Advances in Applied Science and Environmental Technology - ASET 2015
Keywords: Moisture content; Inverse heat transfer; Thermal
characterization; Thermophysical properties.
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Romance Notes , 2018
Le sang des femmes a donné lieu à de nombreux tabous et eu une incidence sur les mœurs de bien de... more Le sang des femmes a donné lieu à de nombreux tabous et eu une incidence sur les mœurs de bien des sociétés. La médecine comme la religion l'ont depuis longtemps étudié et questionné. Les hommes ont forgé une quantité de théories à propos de ce sang qui échappe à leur entendement, à leur contrôle. en egypte, "où la femme [était] traitée avec des égards singuliers, elle demeurait confinée pendant tout le temps de ses règles" (Beauvoir 250). Le Lévitique affirme d'ailleurs le pouvoir contaminant, transmissible de l'impureté menstruelle. et c'est encore un sang souillé que les chrétiens font très vite disparaître de leurs rites. Le sang expulsé lors des menstrues ou des accouchements est communément considéré polluant. Kristeva dira même que "le sang menstruel [. . .] représente le danger venant de l'intérieur de l'identité (sociale ou sexuelle) ; il menace le rapport entre les sexes" (Kristeva 86). Quant aux anglophones, ils appellent tout simplement la menstruation "the curse" (Beauv...
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Thermal Science , 2019
In this paper, the coupled heat and mass transfer within porous media has been studies. First, th... more In this paper, the coupled heat and mass transfer within porous media has been studies. First, the studied materials have been characterized experimentally and than evaluated their thermal properties, namely thermal conductivity and specific heat in different states (dry-wet). The hygroscopic properties, namely water vapour permeability, water vapour sorption. At second time, we present and validate the mathematical model describing heat and mass transfer within bio-based materials, by the confrontation with the experimental results. The materials properties obtained from the characterisation part are used as model?s input parameters. Moreover, a test facility is mounted in the laboratory in order to compare the numerical and experimental data. The founded results show a good concordance between the simulated and measured data. According to this results the mathematical model of Philip and de Vries gives a good prediction of hygrothermal behaviour of bio-based material. This model w...
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Le travail presente propose de mesurer la teneur en eau in situ, en particulier dans les couches ... more Le travail presente propose de mesurer la teneur en eau in situ, en particulier dans les couches peu profondes qui sont rapidement evolutives. Cette mesure s'effectue par le biais d'une caracterisation thermique du systeme. L'etude est divisee en deux parties. La premiere est la determination des parametres thermiques d'un echantillon de sol en laboratoire par des methodes classiques. Ces essais sont realises avec une teneur en eau que l'on fait varier par palier, dans le but d'etudier son influence sur les proprietes thermiques de l'echantillon. On etablit alors une correlation entre l'effusivite b qui caracterise le materiau et son humidite w. La seconde partie traite de la partie in situ des experimentations. Elle fait appel a des techniques plus complexes. Du fait de l'evolution rapide du systeme etudie, nous avons eu recours a l'utilisation d'outils adaptes dans la theorie de traitement du signal : les modeles non entiers. Nous avons ...
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The French Review
The French Review, Vol 93.2, 2019
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The French Review
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Contemporary French and Francophone Studies
Abstract In Féerie pour une autre fois II (also titled Normance), Céline recounts the chaos engen... more Abstract In Féerie pour une autre fois II (also titled Normance), Céline recounts the chaos engendered by the Allied bombing of Paris in April 1944, which killed 1,800 people in seven days. The novel, published in 1954, was a commercial flop. Among the reasons could be a narration that almost completely disappeared, or a traditional chronology that literally imploded. The writing seems subject to delirium and presents a body in direct contact with the surrounding destructions. This article underlines the difficulty for the storyteller to render such a catastrophe. Since Céline notes that the newly-born cinema and its technique overthrew the novel, this work argues that for Céline, the novelistic writing has no choice but to evolve and beat cinema on its own ground. Céline presents himself first as the impressionist of writing. Then, adding the soundtrack to the light and movement, he finally becomes the true cinematographer of literature.
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Third International Conference on Advances in Applied Science and Environmental Technology - ASET 2015 , Dec 29, 2015
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Contemporary French and Francophone Studies
Abstract A Haitian writer who left his island at the age of twenty-one, Jean-Claude Charles was a... more Abstract A Haitian writer who left his island at the age of twenty-one, Jean-Claude Charles was a particular type of exile. As he explains in his concept of "rooting" that he himself created, he did not get established anywhere else, as did many Haitian refugees, he kept on moving. His wandering took him especially to France and the United States. Many thought that Charles then became uprooted. Yet we will show that it is precisely in his wandering that Charles managed to find new roots, to "take root." Metaphorically and by writing, he established a bridge between the two continents.
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Journal of Haitian Studies
Abstract:An interview with Haitian novelist and poet Makenzy Orcel, discussing his approach to li... more Abstract:An interview with Haitian novelist and poet Makenzy Orcel, discussing his approach to literature and the act of writing.
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Transport in Porous Media
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Energy
Abstract An energy pile equipped with a W-type heat exchange pipe was constructed in reclaimed so... more Abstract An energy pile equipped with a W-type heat exchange pipe was constructed in reclaimed soft ground, which is fabricated in a large-diameter cast-in-place pile. The diameter of the energy pile is 1.5 m and the drilled depth reaches to a 60 m whilst the heat exchange pipe is inserted to 30 m depth from the ground surface. To evaluate thermal performance of the constructed energy pile, a series of in-situ thermal performance tests was carried out by controlling intermittent cooling and heating loads, in which the inlet and outlet fluid temperatures, flow rate, and temperatures inside the energy pile were recorded. The test results show that a large-diameter cast-in-place energy pile can provide sufficient heat exchange compared with other types of ground heat exchangers. A series of CFD analyses was performed to simulate the thermal performance tests and provide the designer with preliminary estimation of thermal performance of energy piles. The numerical model was verified by comparing with the field measurements. Using the developed numerical model, the thermal behavior of the energy piles was evaluated with various parameters, and effects of the thermal interference and the temperature difference between the fluid and ground formation on the thermal performance were discussed.
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Journal of Building Engineering
Abstract Old houses (before 1948) in Northern Europe have a lot of architectural similarities and... more Abstract Old houses (before 1948) in Northern Europe have a lot of architectural similarities and one of the most common relates to thick brick walls. The study of thermal transfer in old massive walls provides a better understanding of their thermal behavior and to quantify the savings of energy following a possible thermal insulation. The specificity of these walls resides in the fact that their materials were manufactured in a period when the thermal standards were non-existent and therefore their thermal properties are not precisely known. This paper presents two experimental approaches for determining the thermal properties of masonry walls. In the first method, the materials composing the wall were characterized separately and then equivalent thermal resistance and thermal capacity were deduced; in the second one thermal transfer in an experimental wall was studied by imposing thermal conditions from one side of the wall through a heating box, the other side remaining exposed to ambient lab thermal conditions. The experimental wall is exposed to two different types of boundary conditions through a wooden insulated box which contains a radiator: the constant temperature (steady state mode) to determine the thermal resistances of the system and the sinusoidal temperature (harmonic mode) to determine the thermal capacity of the wall.
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Applied Thermal Engineering , 2015
ABSTRACT A new ground heat exchanger (GHEX) assembled in a ground source heat pump (GSHP) system ... more ABSTRACT A new ground heat exchanger (GHEX) assembled in a ground source heat pump (GSHP) system has been devised, which is equipped in a structural pile, and thus called an "energy pile". In this study, six large-diameter cast-in-place energy piles that encased various types of heat exchange pipes (i.e., three parallel U-types with 5 pairs, 8 pairs and 10 pairs; two coil-types with 200 mm coil pitch and 500 mm coil pitch; and S-type) were constructed in a test bed, and the constructability of each type of the energy pile was compared. Additionally, a 30 m-deep closed-loop vertical GHEX was separately constructed to compare the thermal performance and economic feasibility with the energy piles. A series of in-situ thermal response tests (TRTs) was performed to evaluate the relative heat exchange efficiency of each energy pile according to the various heat exchange pipe configurations. The relative heat exchange efficiency obtained in the cast-in-place energy piles and the down-sized 30 m-deep closed-loop vertical GHEX was normalized by the pile length (or borehole length) and the total heat exchange pipe length. The result from the in-situ tests indicates that the longer the heat exchange pipe installed, the higher heat exchange efficiency per pile length. However, in the case of tight layouts of the heat exchange pipe, thermal interference occurs between adjacent pipe loops, which decreases heat exchange efficiency. Economic feasibility of the energy piles was evaluated, considering the material and installation costs for assembling the heat exchange pipe with consideration of the heat exchange efficiency. It is concluded that the coil-type cast-in-place energy pile can achieve sufficient capacity for heat exchange, compared with the closed-loop vertical GHEX.
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Journal of Renewable and Sustainable Energy , 2012
In a period of surging energy prices, resource depletion, and concerns over the use of nuclear po... more In a period of surging energy prices, resource depletion, and concerns over the use of nuclear power, energy savings are paramount and a major component of ongoing sustainable development. Geothermal energy is the energy stored in the form of heat beneath the surface of the Earth. Related to this, the thermal properties of soils are of great importance, particularly with regard to the modern trends of utilizing the subsurface for transmission of either heated fluids or high power currents. For example, in geothermal hydrology or geotechnical engineering applications, the thermal conductivity must be determined to assess the energy potential of the soil. The presence of water (groundwater, rainfall, natural moisture) improves both the thermal conductivity and thermal capacity fields. We present an original method—based on a thermal study and the use of non-integer order models—to determine the thermophysical parameters of different soils in near-surface layers, and link them to the water content variations...
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Construction and Building Materials , 2014
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Composites Part B: Engineering , 2015
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International Journal of Thermophysics , 2009
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Energy and Buildings , 2014
ABSTRACT Current environmental concerns have promoted efforts to reduce the consumption of energy... more ABSTRACT Current environmental concerns have promoted efforts to reduce the consumption of energy. In moving towards improving existing buildings, the study of the thermal behaviour of a wall is not easy because its actual thermophysical properties are not well-known. These parameters are nevertheless fundamental for the economic optimisation of building refurbishment or for the verification of their performance in situ. It is thus important to be able to characterize existing building walls. The objective of our study was to develop a method to thermally characterize a wall adapted to in situ applications based on an active approach. The principle of identification consists of thermally examining an access surface by applying a heat flux and studying the response in terms of the temperature recorded by infrared thermography on the opposite surface. Based on signals of flux and of temperatures measured at the edges of the wall, the thermophysical properties (thermal conductivity and volumetric heat) of the wall are estimated by inverse method. The method was applied first to a homogeneous gypsum-tile panel in laboratory. The results were compared to reference values obtained from a classical procedure. Then, the method has been implemented in situ on a homogeneous reinforced concrete shell.
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Source: https://mercer.academia.edu/AlexisChauchois
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