黄河沙坡头连续弯道水流运动三维数值模拟  

Three-dimensional Numerical Simulation of the Yellow River Flow in Shapotou Consecutive Curves

作　　者：景何仿[1,2] 李春光[1] 吕岁菊[1] 周炳伟[1] 

机构地区：[1]北方民族大学数值计算与工程应用研究所,宁夏银川750021 [2]宁夏大学土木与水利工程学院,宁夏银川750021

出　　处：《宁夏大学学报（自然科学版）》2010年第3期197-202,共6页Journal of Ningxia University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(10961002);国家民委资助项目(09BF07);宁夏自然科学基金资助项目(NZ1057);宁夏高等学校科学研究资金资助项目(2008JY003;2009JY002)

摘　　要：用可实现k-ε数学模型对黄河沙坡头建立水利枢纽后库区连续弯道的水流运动进行了三维数值模拟.得到了不同断面处垂线平均流速分布、断面流速分布、主流流速和二次流的数值模拟结果,对部分断面弯道环流及水面处离心环流进行了模拟和分析.数值模拟结果与实测结果吻合较好,表明该模型可以用于对具有连续弯道的天然河道河流数值模拟中.In this paper,the Yellow River flow in Shapotou continuous curves is simulated by using a three-dimensional turbulent model,namely realizable k-ε model.Numerical results of vertical mean velocity,velocity distribution,stream-wise velocity and secondary flow on different cross-sections are obtained.In addition,circulating flow in the bends and centrifugal circulation are calculated and analyzed.Good consistency between numerical and measured results indicates that realizable k-ε model can be used to simulate turbulent flow in rivers with continuous curves.

关 键 词：可实现k-ε模型 三维数值模拟 沙坡头水库 弯道环流 离心环流 

分 类 号：TV131.4[水利工程—水力学及河流动力学]