计算浅水动力学的新方向

概述了计算浅水动力学的新方向,主要内容分为算法和应用两部分,前者包括浅水流动计算面临的困难、对算法的要求和若干新方向,着重讨论了有限体积描述及某些高性能格式的基本原理;后者给出了一些计算结果,用以反映有限体积Osher格式在明渠、堰闸、漫滩、溃坝和决堤流动计算中的应用.

A New Direction and Developments in Computational Shallow Water Hydrodynamics

This paper provides a personal view of an overall perspective on computational shallow water hydrodynamics, divided into two parts-one dealing with algorithms and the other with applications. The former includes:some difficulties and challenges, requirements, and developments in shallow water flow computations. An emphasis is laid on discussing the underlying principles of finite-volume formulation and some current high-performance schemes. In the latter, a number of computed results are presented which reflect various applications of the finite-volume Osher scheme for Hows in open channels, over weirs, and due to dam-break, overbank and dike-corruplion.