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International Journal of Innovation and Applied Studies
ISSN: 2028-9324     CODEN: IJIABO     OCLC Number: 828807274     ZDB-ID: 2703985-7
 
 
Wednesday 21 October 2020

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Determination of the thermal diffusivity to tow plaster by numerical method: Influence the Biot number and the heat exchange coefficient in transient regime


[ Détermination de la diffusivité thermique du matériau filasse plâtre par méthode numérique: Influence du nombre de Biot et du coefficient d’échange thermique en régime transitoire ]

Volume 22, Issue 4, March 2018, Pages 275–281

 Determination of the thermal diffusivity to tow plaster by numerical method: Influence the Biot number and the heat exchange coefficient in transient regime

Papa Touty Traore1, M.S. Ould Brahim2, Youssou Traore3, Alassane Ba4, Dame Diao5, Seydou Faye6, Issa Diagne7, and Gregoire Sissoko8

1 Laboratory of Semiconductors and Solar Energy, Physics Department, Faculty of Science and Technology, University Cheikh Anta Diop, Dakar, Senegal
2 Laboratory of Semiconductors and Solar Energy, Physics Department, Faculty of Science and Technology, University Cheikh Anta Diop, Dakar, Senegal
3 Laboratory of Semiconductors and Solar Energy, Physics Department, Faculty of Science and Technology, University Cheikh Anta Diop, Dakar, Senegal
4 Université de Thiès, Thiès, Senegal
5 Laboratory of Semiconductors and Solar Energy, Physics Department, Faculty of Science and Technology, University Cheikh Anta Diop, Dakar, Senegal
6 Laboratory of Semiconductors and Solar Energy, Physics Department, Faculty of Science and Technology, University Cheikh Anta Diop, Dakar, Senegal
7 Laboratory of Semiconductors and Solar Energy, Physics Department, Faculty of Science and Technology, University Cheikh Anta Diop, Dakar, Senegal
8 Laboratory of Semiconductors and Solar Energy, Physics Department, Faculty of Science and Technology, University Cheikh Anta Diop, Dakar, Senegal

Original language: French

Received 13 November 2017

Copyright © 2018 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract


The thermal transfer in the tow plaster (insulating material) is modeled by numerical method resolution in transient regime. The discretization of the reduced space variable and the reduced temporal variable is applied to the heat equations, the boundary conditions and the initial condition. The expressions of the dimensionless temperature allowed to represent the curves of evolution of the reduced temperature in the reduced time. The time constant characterizing the reduction of the reduced temperature in the material makes it possible to calculate its thermal diffusivity.

Author Keywords: thermal diffusivity, time constant, numerical method, transient regime.


Abstract: (french)


Le transfert thermique en régime transitoire à travers un matériau isolant filasse-plâtre est modélisé par la méthode de résolution numérique. A partir de la discrétisation de la variable réduite d’espace et de la variable réduite temporelle, les équations de la chaleur, des conditions aux limites et de la condition initiale sont discrétisées et réduites. Les expressions de la température adimensionnelle ont permis de représenter les courbes d’évolution de la température réduite dans le temps réduite. La constante de temps qui caractérise la diminution de la température réduite au sein du matériau permet de calculer la diffusivité thermique du matériau.

Author Keywords: Diffusivité thermique, constante de temps, méthode numérique, régime transitoire.


How to Cite this Article


Papa Touty Traore, M.S. Ould Brahim, Youssou Traore, Alassane Ba, Dame Diao, Seydou Faye, Issa Diagne, and Gregoire Sissoko, “Determination of the thermal diffusivity to tow plaster by numerical method: Influence the Biot number and the heat exchange coefficient in transient regime,” International Journal of Innovation and Applied Studies, vol. 22, no. 4, pp. 275–281, March 2018.