岩土工程学报2000，Vol.22Issue(3)：357-361,5.
非饱和土孔隙气、水、汽、热耦合运动之模拟
Modelling fully coupled moisture, air and heat transfer in unsaturated soils
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作者信息
- 1. Nanjing Hydraulic Research Institute, 210024, Nanjing, China;Nanjing Hydraulic Research Institute, 210024, Nanjing, China;NTU-PWD Geotechnical Research Centre, Nanyang Technological University, Singapore 639798;NTU-PWD Geotechnical Research Centre, Nanyang Technological University, Singapore 639798
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摘要
Abstract
A theoretical model has been proposed to describe fully coupled moisture, air and heat transfer in unsaturated soils. Pore-liquid water and pore-air transfer were assumed to be governed by Darcy's law and pore-water vapour transfer was considered to occur due to two effects, first, under molecular diffusion and, second, as part of the bulk flow of the pore-air. The pore-water vapour transfer due to the molecular diffusion was described using Fick's law. Heat transfer was formulated to include effects of conduction, convection and latent heat of vapourization. A three-dimensional computer program has been developed to incorporate the proposed model for analyzing the transient coupled flow of moisture, air and heat in unsaturated soils. Both the fundamental mathematical formulation and the computer code have been verified by comparing numerical results with test measurements of a drying sand column.关键词
非饱和土/气、水、汽、热耦合运动/数值模拟Key words
numerical modelling/moisture, air and heat transfer/unsaturated soils分类
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..非饱和土孔隙气、水、汽、热耦合运动之模拟[J].岩土工程学报,2000,22(3):357-361,5.
