【摘要】 本文讨论了非平衡等温吸附条件下,地下水中溶质的弥散运移规律,特别是探讨了吸附系数α和解析系数β对溶质运移过程的控制作用。讨论了ogata解析解为基础,提出了特征值型有限元方法求解的理论,并以实例验证了后者的适用性。该法可克服常规有限元方法求解水质模型时所产生的数值弥散等问题,从而为求解对流项为主的水质模拟开辟了途径。更多还原

【Abstract】 The Dispersive-migration of groundwater solute in the inequilibrium isotherm absorption is studied in this paper. The Control of the absorption coefficient α and the desorption coefficient β over solute migration is particularly discussed. Based on the analytical solution of Ogata, a method is presented to find solution by means of characteristis’ finite element technique, of which the practicability was confirmed by a practical example. By using this method, problems such as numerical dispersions which are commonly encountered in using finite element technique to find solution to analogs of water quality can be avoided. This is a new way to find answer to water quality analogs under the conditon of convention as the main item.更多还原