山区河流平面二维流场的数值模拟  

2-D horizontal numerical modeling of flow in the mountain river

作　　者：李艳红[1] 周华君[2] 时钟[1] 

机构地区：[1]上海交通大学船海院港口与水利工程研究所,上海200030 [2]重庆交通学院河海建筑工程系,重庆400074

出　　处：《水科学进展》2003年第4期424-429,共6页Advances in Water Science

基　　金：国家杰出青年基金资助项目(40225014)~~

摘　　要：针对山区河流边界地形复杂、水位及流速变化剧烈的特点,用"混合五对角法"建立平面二维数学模型并求解,进行水位和流速的数值模拟。利用嘉陵江重庆金刚碑-朝阳桥河段地形及5个横断面的水位和水深平均流速资料对此模型进行了验证,模型快速、准确地再现了该河段的水位和水深平均流速情况。Flow regime in the mountain river is characterized by its complex boundary topography, fluctuating water level and rapid flow velocity. A two-dimensional horizontal numerical model, which is solved by the mixed five-diagonal finite difference algorithm, is developed for modeling water level and flow velocity in the mountain river. This model is verified by the topographic and depth-averaged flow velocity data from the Jingangbei-Chaoyangqiao section near Chongqing in the Jialingjiang River. Good agreements are found in comparison with the measured water level and flow velocity.

关 键 词：山区河流 平面二维流场 混合五对角法 数学模型 嘉陵江 水动力 

分 类 号：TV143[水利工程—水力学及河流动力学]