复杂收缩边墙的窄缝式挑坎动水压强研究  

A Study of Hydrodynamic Pressure of Slit-type Bucket With Complex Contraction Sidewalls

作　　者：黄智敏[1,2] 

机构地区：[1]广东省水利水电科学研究院,广州510635 [2]广东省水动力学应用研究重点实验室,广州510635

出　　处：《中国农村水利水电》2013年第9期111-114,共4页China Rural Water and Hydropower

摘　　要：窄缝式挑坎段边墙承受的动水压强比常规挑坎边墙动水压强大的多,而以往的研究主要限于直线收缩边墙的窄缝挑坎段的动水压强。在现有的直线收缩边墙窄缝挑坎段动水压强计算方法的基础上,对凹曲率的圆弧收缩边墙、不对称收缩边墙和梯形出口断面等窄缝挑坎段边墙的动水压强计算方法进行分析,并给出了相应的计算实例。计算方法的结果与模型试验成果较吻合。The hydrodynamic pressure intensity on slit-type bucket sidewall is much larger than that of conventional bucket sidewall, and the previous research findings are mainly confined to the pressure intensity of the linear contraction sidewall bucket. Based on the existing calculation methods of the pressure intensity of linear contraction sidewall bucket in this paper, the calculation methods of sidewall pressure intensity of some slit-type bucket are researched, such as concave curvature arc-shape contraction sidewall, asym- metric contraction sidewall, trapezoidal outlet section, etc. , and the calculation examples are given accordingly. The calculation results agree well with the model test results.

关 键 词：窄缝式挑坎 边墙 动水压强 

分 类 号：TV135.23[水利工程—水力学及河流动力学]