›› 2007, Vol. 28 ›› Issue (S1): 244-248.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Numerical simulation of relationship between thermal conductivity of geotechnical material and its porosity

LI Shou-ju1, FAN Yong-si2, ZHANG De-gang2, LIU Ying-xi1   

  1. 1. State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China; 2. Fengman Hydropower Plant, Jilin 132108, China
  • Received:2007-05-01 Online:2007-10-25 Published:2014-03-28

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Abstract: The relationship between thermal conductivity of geotechnical material and its porosity is simulated by using finite element method. The solid matrix and pore are generated randomly according to material porosity, and material parameters and element properties are changed by ANSYS parameter design language. The effective thermal conductivity is computed according to thermal flux through some section computed by FEM and Fourier heat transform low. The investigation shows that the effective thermal conductivity decreases with increasing porosity, and the gradient increment of effective thermal conductivity with respect to porosity ratio may decrease obviously while the porosity reaches percolation critical value, and the thermal conductivity characteristics of geotechnical materials pose the percolation transform properties that are the same as seepage in porous medium.

Key words: effective thermal conductivity, porosity, geotechnical material, ANSYS parameter design language, FEM simulation

CLC Number: 

  • O 357.3
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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