地下水污染问题中的数值反演解

Numerical Inversion of the Laplace Transform Solution to Groundwater pollution

本文介绍了 H.Dubner & J Abate 和 K.S.Crump 两种、拉普拉斯数值反演解法,以及它们在污水注入的越流含水层问题中的应用.在数值解例中作者将本文介绍的两种方法和精确解及 H.Stehfest方法分别作了比较.本文所介绍的方法无论是计算精度还是在数值稳定性上都有很大改进.

In this paper,bath numerical inversion of the Laplace transformdescribed by H Dubner & J.Abate and K.S.Crump are presented ThenDubber & Abate's method and Crump's method are applied to the solut-ions approximating solute transport in a leaky aquifer receving waste-water injection.The example calculations show that the methods are muchmore accurate and stabler than Stehfest's method.