水利水电科技进展2017，Vol.37Issue(5)：46-50,77,6.DOI:10.3880/j.issn.1006-7647.2017.05.008
不同底缘形式的平板闸门水力特性数值模拟
Numerical simulation of hydraulic characteristics of plain gate with different types of bottom edges
摘要
Abstract
The closing process of high-head plain gates was numerically simulated with the RNG k-εmodel, VOF method, and dynamic mesh division technique. The reliability of the numerical method was verified with measured data. The trend term of bottom edge pressure was extracted using empirical mode decomposition ( EMD ) , a processing technology of a nonstationary random process. The relationships between the bottom edge type, flow fluctuation, and holding force were examined. The optimal bottom edge type was determined through comprehensive consideration of the pressure fluctuation, cavitation, and holding force characteristics of the bottom edge. The results show that the type of bottom edges of gates has a significant influence on the opening and closing forces, and a bottom edge with a front inclination leads to the minimum opening and closing forces, lower pressure fluctuation, and less cavitation damage.关键词
平板闸门/动水闭门/数值模拟/水动力特性/底缘形式/经验模态分解Key words
plain gate/hydrodynamic closing/numerical simulation/hydrodynamic characteristic/bottom edge type/empirical mode decomposition分类
建筑与水利引用本文复制引用
刘昉,赵梦丽,冷东升,邢仕强..不同底缘形式的平板闸门水力特性数值模拟[J].水利水电科技进展,2017,37(5):46-50,77,6.基金项目
国家自然科学基金 (51579172) （51579172）
