Modeling of Two-Dimensional Orthotropic Heat Conduction in Porous Gypsum

Carlos R.N. Souza; José P. Alencar; Alan Christie Silva Dantas; Andrea de Vasconcelos Ferraz; Nelson C. Olivier

doi:10.4028/www.scientific.net/MSF.820.520

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HomeMaterials Science ForumMaterials Science Forum Vol. 820Modeling of Two-Dimensional Orthotropic Heat...

Modeling of Two-Dimensional Orthotropic Heat Conduction in Porous Gypsum

Abstract:

The gypsum is a versatile material that shows low thermal conductivity, which makes this material very suitable for application as thermal insulation. The increase of the porosity of gypsum bodies promotes a decrease on the thermal conductivity. This effect optimize the range of applications of gypsum on the thermal insulate field. The present study aimed the numerical modeling of two-dimensional heat conduction by finite differences in a steady state to evaluate the ortotrophy of the thermal conductivity of porous gypsum using the elements of the protected hot plate method. Computer simulations were performed using thermal conductivity of the gypsum equal to 0.35 W/m.K. This value was varied on the x and y directions by 5%, 10% and 15%. The heat flow applied to the numerical simulations were equal 75 W/m2, 100 W/m2 to 125 W/m2.It was possible to produce temperature profiles where is visible the displacement of isotherms as a function of the change in thermal conductivity in the x direction.

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Periodical:

Materials Science Forum (Volume 820)

Pages:

520-525

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.820.520

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Online since:

June 2015

Authors:

Carlos R.N. Souza*, José P. Alencar, Alan Christie Silva Dantas, Andrea de Vasconcelos Ferraz, Nelson C. Olivier

Keywords:

Finite Differences, Finite Gypsum, Ortotrophy, Thermal Conductivity

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* - Corresponding Author

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