A Laplace transform DRBEM with a predictor-corrector scheme for time-dependent infiltration from periodic channels with root-water uptake

作者：Solekhudin Imam^*; Ang Keng Cheng

来源：Engineering Analysis with Boundary Elements, 2015, 50: 141-147.

DOI：10.1016/j.enganabound.2014.08.011

• Richard's equation
• Helmholtz equation
• DRBEM
• Predictor-corrector
• Laplace transform
• Root water uptake

A problem involving time-dependent infiltration from periodic channels with root-water uptake is governed by Richards equation. To study the problem numerically, the governing equation is transformed into a modified Helmholtz equation using the Kirchhoff transformation, dimensionless variables, and Laplace transforms. The modified Helmholtz equation is then solved numerically using a dual reciprocity boundary element method (DRBEM) and a predictor-corrector scheme simultaneously. A numerical inverse Laplace transform is employed to obtain numerical solutions of the problem.

• 出版日期2015-1
• 单位南阳理工学院