SUGGESTION A MODEL FOR ESTIMATION OF EFFECTIVE THERMAL CONDUCTIVITY OF POROUS MEDIA

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GHOZATLOO A.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: Nashrieh Shimi va Mohandesi Shimi Iran Year:2010 | Volume:29 | Issue:3 Page(s): 47-54

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Title

SUGGESTION A MODEL FOR ESTIMATION OF EFFECTIVE THERMAL CONDUCTIVITY OF POROUS MEDIA

Author(s)

GHOZATLOO A. | Issue Writer Certificate

Keywords

EFFECTIVE THERMAL CONDUCTIVITYQ2

POROUS MEDIAQ3

MODELINGQ2

CONDUCTIONQ3

Abstract

In this paper, thermal conductivity of POROUS MEDIA has been modeled based on mathematical analysis in one dimensional space with micro size. First, porous MODELING established on three kinds of porosity (Y = 0.52, 0.68 and 0.74) and then to make analysis and calculation easy, reality assumptions were considered. With omitted radiation and convection mechanisms, we can developed one simple model as kP = kgks / (ks - Y (ks - kg)). After developing the model its results for three materials cotton, fiber and sand obtained and then compared to the experimental data and the results of Maxwell model as a valid model. The results obtained for two modes of material into the holes once air and once again water. The results obtained from the model for gas fluid (air) into the holes with great accuracy. Generally, based on the terms of model, in POROUS MEDIA accuracy of the model was increased when the ratio of (ks / kg) was increased. At the other hand, if the bulk has much conductivity or the fluid into the hole has low conductivity, the prediction of model and its adaptation on heat behavior of the body will be better. So the uses of this model were recommended for dense porous materials.

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APA: Copy

GHOZATLOO, A.. (2010). SUGGESTION A MODEL FOR ESTIMATION OF EFFECTIVE THERMAL CONDUCTIVITY OF POROUS MEDIA. NASHRIEH SHIMI VA MOHANDESI SHIMI IRAN (PERSIAN), 29(3), 47-54. SID. https://sid.ir/paper/26156/en

Vancouver: Copy

GHOZATLOO A.. SUGGESTION A MODEL FOR ESTIMATION OF EFFECTIVE THERMAL CONDUCTIVITY OF POROUS MEDIA. NASHRIEH SHIMI VA MOHANDESI SHIMI IRAN (PERSIAN)[Internet]. 2010;29(3):47-54. Available from: https://sid.ir/paper/26156/en

IEEE: Copy

A. GHOZATLOO, “SUGGESTION A MODEL FOR ESTIMATION OF EFFECTIVE THERMAL CONDUCTIVITY OF POROUS MEDIA,” NASHRIEH SHIMI VA MOHANDESI SHIMI IRAN (PERSIAN), vol. 29, no. 3, pp. 47–54, 2010, [Online]. Available: https://sid.ir/paper/26156/en

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