两类差分格式在锋生数值模拟中的应用比较  

Comparison and Application of Two Kinds of Finite Difference Scheme in Frontogenesis Simulation

作　　者：季仲贞[1] 杨宏伟[1] 王斌[1] 

机构地区：[1]中国科学院大气物理研究所,北京100029

出　　处：《计算物理》2003年第4期311-314,共4页Chinese Journal of Computational Physics

基　　金：国家重点基础研究发展规划项目(编号G1999032801)资助项目

摘　　要：　在二维理想锋生数值模式的基础上,用两类差分格式进行数值试验比较.计算结果表明,无论是在大气数值模拟中广泛使用的总能量守恒型差分格式,还是在高速流中捕捉接触间断较好的反扩散格式,对锋生过程均有较好的模拟能力,反扩散格式的效果更好一些.Based on the model of ideal frontogenesis in two dimensions, two kinds of finite difference scheme is tested. One scheme is a total energy conservation scheme that is used widely in atmosphere simulation, and the other one is an artificial compression method (ACM) that is used to capture the contact discontinuity in high\|speed flows. Both of them have great abilities to simulate frontogenesis. But the effect of the ACM is better than the other to some extent.

关 键 词：锋生 数值模拟 总能量守恒型差分格式 反扩散格式 大气 天气学 高速流 

分 类 号：P441[天文地球—大气科学及气象学] O354[理学—流体力学]