急流激波算法比较与分析

Calculation and Analysis for Shock Wave in Open Channel

对明渠急流中由于边墙偏转角的变化而产生的水流扰动进行了分析,当边墙向水流内侧转向时,扰动线以下的区域内出现水面涌高,形成陡激波.当边墙向水流外部偏转时,水面出现跌落,产生绕动,形成缓激波,陡激波与缓激波统称为急流激波.文章对急流激波的计算方法进行了分析比较,并对附体激波的最大河岸偏转角进行了分析.

The shock wave in supercritical flow caused by riverside deflection angle are analysed. When riverside turns to the inner of current ,it causes steep shock wave. When riverside turns to the exterior of current, it causes flat shock wave. The computational methods of shock wave are analysed,and the maximal riverside deflection angle is analysed also.