摘要
本文将ＳＵＰＧ（Ｓｔｒｅａｍｌｉｎｅｕｐｗｉｎｄ／Ｐｅｔｒｏｖ—Ｇａｌｅｒｋｉｎ）有限元方法应用于非饱和流动的Ｒｉｃｈａｒｄｓ方程，导出了数值表达式，并且对一维入渗问题进行了数值计算．计算的结果表明：本文的方法是精确、收敛和稳定的，可用于非饱和带水分运动的实际计算．
The streamline upwind/ Petrov-Galerkin (SUPG) finite element method is applied to solve the unsaturated flow problem. A numerical expression has been derived and calculations have been made for the 1-dimensional Richards Equation. The calculated result of an example shows that this method has good accuracy, convergency and stability.
出处
《水利学报》
EI
CSCD
北大核心
1994年第6期37-42,共6页
Journal of Hydraulic Engineering
关键词
非饱和流
有限单元法
数值解
unsaturated flow, 1-dimensional infiltration, finite element method,numerical solution, the streamline upwind / petrov-Galerkin method,numerical dispersion and oscillation.
