Laplace变换边界积分方程与Schapery数值反演法模拟溶质运移问题

Transport of solute simulated by the method of schapery numerical transform inversionand the laplace transform boundary integral equation

本文将对流一弥散方程化为纯弥散方程，采用Ｌａｐｌａｃｅ变换、Ｓｃｈａｐｅｒｙ数值反演法求解，通过实例计算对选取不同的Ｌａｐｌａｃｅ变换参数的计算结果进行比较，分析Ｌａｐｌａｃｅ变换参数对计算精度的影响，给出Ｐ值的选取方式。

In this paper, the convection - diffusion equation was transformed into the pure diffusion equation , and solved by the Laplace transform was solved with the numerical transform inversionfl The calculator resuhs of selecting dif- ferent Laplace transform parameters were compared by examples. The effect of the Laplace transform parameter on the calculation accuracy was analyzed and the selecting form of the P value was given.