摘要
基于运动波方程差分解的数值扩散在一定条件下可以模拟扩散波物理扩散的新途径 ,对马斯京根 康吉洪水演算方法和具有预见期的洪水演算方法进行了分析 ,给出了方法的稳定性条件 .对两条天然河道的应用表明 ,洪峰流量、峰现时间和过程线等的预报精度均达到了《水文情报预报规范》的要求 .
Based on the discretion of linear kinematic-wave equation by the finite difference method and the concept of numerical dispersion a method is developed to model the physical dispersion. The Muskingum-Cunge routing model and the routing model with a prediction duration are developed in this paper. The models have been applied to the flood routing for a practical channel, and good results are obtained.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
北大核心
2001年第2期110-113,共4页
Journal of Hohai University(Natural Sciences)
基金
国家重点基础研究规划项目! (G19990 436 0 7)
关键词
运动波
扩散波
数值扩散
物理扩散
洪水演算
kinematic wave
diffusion wave
numerical dispersion
physical dispersion
flood routing
