Analysis of the Coupling of Heat and Moisture of the Soil under Circulating Action of Temperature

Abstract:

This article has used the equations of coupled heat-moisture anisothermal flow of the unsaturated soil, and conducted the numerical simulation coupling of heat and humidity by FLAC. By comparing the calculation result with the test result, it shows that the calculation result is close to the experiment result. The error is tending to be larger as the depth of the soil adds. The maximum error between the calculation and the experiment result is 1°C, and the smallest one is 0.1°C. Moreover due to the hysteresis of the heat transfer in the soil, the middle of the soil occurs temperature concentration phenomenon; Their trends of water migration variation are similar as the depth of the soil adds. The model of the coupling of heat and moisture is able to better simulate the change of heat and moisture of the soil under circulating action of temperature.

• Periodical: Advanced Materials Research (Volumes 433-440)
• Pages: 6356-6362
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.433-440.6356
• Online since: January 2012
• Authors: Dong Zhou, Xiao Duo Ou, Li Ming Wang, Guan Yong Yue
• Keywords: Coupling of Heat, Coupling of Moisture, Numerical Simulation, Water Migration

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