淹没丁坝附近三维水流运动大涡数值模拟

长江科学院院报 ›› 2001, Vol. 18 ›› Issue (5): 28-31.

淹没丁坝附近三维水流运动大涡数值模拟

周宜林

长江科学院河流研究所，湖北武汉430010

出版日期:2001-10-01 发布日期:2012-03-05

Largeeddy simulation of 3D flow motion around submerged spurdikes

ZHOU Yi-Lin

Online:2001-10-01 Published:2012-03-05

摘要/Abstract

摘要： 通过大涡数值模拟研究了丁坝附近水流特性。在数值模拟过程中基本方程采用大涡模拟方程,由Smagorinsky模型得到小尺度涡粘性系数,在此基础上给出了大涡模拟数值计算方法;并利用试验观测数据,验证了数值模拟结果,同时比较了上挑、正挑、下挑3种淹没的不透水丁坝附近水流特性

关键词: 淹没丁坝, 三维水流, 大尺度涡体

Abstract: Based on the largeeddy numerical simulation method,the flow properties around three kinds of spurdikes,i.e.,60° groyne,90° groyne and 120° groyne(the inclined angle representing an angle between the groyne with river bank),are studied.The basic equations for numerical simulation are the largeeddy simulation equations.The most widely used Smagorinsky model is adopted to represent the eddy viscosity coefficient in the subgridscale stresses.And then a numerical method is given.The computed results are detailedly verified by the experimental data.Finally,the velocily distributions around the three kinds of spurdikes are given and compared

周宜林. 淹没丁坝附近三维水流运动大涡数值模拟[J]. 长江科学院院报, 2001, 18(5): 28-31.

ZHOU Yi-Lin. Largeeddy simulation of 3D flow motion around submerged spurdikes[J]. JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI, 2001, 18(5): 28-31.