Mathematical modeling and numerical simulation of water-heat coupled movements in a snow cover-soil union
Snow cover is a common and relatively stable land cover condition in winter for cold north regions in China. Snow cover has significant effects on water and heat transfers in frozen soil; it needs to be considered in the study of frozen soil water-heat coupled movements. On the basis of previous research results and physical process analysis of water and heat movements in snow cover and soil, a snow coversoil union water-heat coupled movements model is established in this paper. The numerical simulation was conducted by using a finite difference method. The results indicate that the simulated values have a similar trend to the measured values and the numerical simulation had big relative errors. However, the average absolute errors of the total and liquid moisture content in frozen soil were all less than 4％, and that of the frozen soil temperature was 1.37 ℃. The errors of the numerical simulation were still within the acceptable range. Thus, the snow cover-soil union water-heat coupled movement model constructed in this paper is rational.
Snow cover Frozen soil Water-heat coupled movements Mathematical model Numerical simulation
Qiang Fu Zilong Wang Qiuxiang Jiang Tianxiao Li
College of Water Conservancy & Architecture, Northeast Agricultural University, Harbin, 150030, PR China
国际会议
南昌
英文
950-955
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）