Practical Use of SPRINT and a Moving Grid Interface for a Class of 1D Non-Linear Transport Problems

摘要

Environmental problems tend to increase in complexity. The mathematical formulation of these problems often results in a set of differential equations, which urges the need for robust differential equation solvers. Moreover, these solvers should be implemented within a user-friendly and flexible computational framework. The software package SPRINT offers such a versatile framework. For 1D problems, characterized by steep gradients in space and time, a moving grid interface (MGI) has been developed. This interface minimizes the required total number of computational nodes, thus reducing computer storage and execution time. MGI parameter values are specified for advection-dispersion like problems. SPRINT together with the MGI is applied to analyzing the applicability of several dispersion models. As a result a model is constructed capable of simulating a wide variety of situations. It enables one to explain low, medium and high concentration experiments of salt transport coupled with fluid flow.