高水头船闸阀门段体型优化三维数值模拟  

Three dimensional numerical simulation of figure optimization of valves of high head locks

作　　者：杨忠超[1] 杨斌[1] 陈明栋[1] 胡雪梅[1] 

机构地区：[1]重庆交通大学内河航道整治技术交通行业重点实验室,重庆400074

出　　处：《水利水电科技进展》2010年第2期10-13,57,共5页Advances in Science and Technology of Water Resources

基　　金：交通部西部建设项目(200532800030);重庆市教委基金(KJ050408);重庆市科委基金(CSTC2006EA6008)

摘　　要：采用动网格技术和VOF方法对阀门开启过程进行非恒定流三维紊流数值模拟,分析阀门段水流急变分离的流态、流速、压力等水力特性参数的时空演化规律,分析出现空蚀危险的区域和时刻。针对阀门后突扩体顶板和升坎凸弧处出现的较低负压问题,提出8种体型方案,并分析体型参数对流速、流态、压强分布的影响,遴选出最佳体型。分析结果表明,方案3的顶板压强最大,方案8的升坎凸弧处压强最大。The dynamic mesh technology and the VOF method were employed to conduct 3D numerical simulation of unsteady flows for the opening process of valves of high head locks. The spatial and temporal evolution rules of hydraulic parameters such as flow pattern, flow velocity and pressure were analyzed. The region and time with the occurrence of cavitation erosion were discovered. As for the low negative pressure, problem on the ceiling and the end of rise step, 8 design schemes for the figure optimization were proposed The effect of the figure parameters on the flow velocity, flow pattern and pressure distribution were. analyzed. Accordingly, the optimization figure was selected. The results show that the pressure on the ceiling is the largest for the third design scheme and the pressure on the end of rise step is the largest for the eighth design scheme.

关 键 词：高水头船闸 阀门 紊流数值模拟 动网格 空蚀 体型优化 

分 类 号：U641.33[交通运输工程—船舶及航道工程]