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Çѱ¹Áö¹Ý°øÇÐȸ / v.27, no.9, 2011³â, pp.77-86
ÇÏÁß Á¶°ÇÀÌ Áö¹ÝÀÇ ¿­Àüµµµµ¿¡ ¹ÌÄ¡´Â ¿µÇâ: ÀÔÀÚ ½ºÄÉÀÏ¿¡¼­ÀÇ ¿¬±¸
( Loading Effects on Thermal Conductivity of Soils: Particle-Scale Study )
ÀÌÁ¤ÈÆ;ÁÖÁøÇö;À±Å¼·;ÀÌÀå±Ù;±è¿µ¼®; ¿¬¼¼´ëÇб³ »çȸȯ°æ½Ã½ºÅÛ°øÇкÎ;Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø;¿¬¼¼´ëÇб³ »çȸȯ°æ½Ã½ºÅÛ°øÇкÎ;Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø;Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø;
 
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The stress condition mainly dominates the thermal conductivity of soils whereas governing factors such as unit weight and porosity suggested by empirical correlations are still valid. The 3D thermal network model enables evaluation of the stress-dependent thermal conductivity of particulate materials generated by discrete element method (DEM). The relationship among dominant factors is analyzed based on the coordination number and porosity determined by stress condition and thermal conductivity of pore fluid. Results show that the variation of thermal conductivity is strongly attributed to the enlargement of inter-particle contact area by loading history and pore fluid conductivity. This study highlights that the anisotropic evolution of thermal conductivity depends on the directional load and that the particle-scale mechanism mainly dictates the heat transfer in soils.
 
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Discrete element method;Thermal conductivity;Thermal network model;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.27, no.9, 2011³â, pp.77-86
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201107654735964)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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