水道港口2011，Vol.32Issue(1)：54-59,6.
漫滩水流动量修正系数特性分析与模拟
Characteristic analysis of momentum correction coefficient in compound channels and its simulation method
摘要
Abstract
Based on the shallow water hydrodynamic model of Shiono & Knight for compound channel flows,the characteristics of floodplain flow were analyzed.The study shows that the momentum correction coefficient increases rapidly when floodplain flow happens,and decreases subsequently.The degree of the coefficient' s variation will be larger under larger width ratio between floodplain and channel.But the momentum correction coefficient calculated by the conventional cross-section averaged method is equal to one constantly,which does not agree with the real discipline.To solve this problem,a new method calculating the momentum correction coefficient is proposed.In the end, experimental datum is used to verify the method.关键词
河漫滩/动量修正系数/数学模型Key words
floodplain/ momentum correction coefficient/ mathematical model分类
建筑与水利引用本文复制引用
吴腾,朱瑞虎..漫滩水流动量修正系数特性分析与模拟[J].水道港口,2011,32(1):54-59,6.基金项目
河海大学高校科研基金项目(2009B02414) （2009B02414）
