跌扩型底流消能工消能的试验研究  

Experimental study on energy dissipation of expanding falling-sill bottom-flow energy dissipater

作　　者：陈朝[1] 王立辉 王海军[1] 

机构地区：[1]昆明理工大学电力工程学院,昆明650051 [2]云南省水利水电学校,昆明650202

出　　处：《水力发电学报》2012年第4期145-149,共5页Journal of Hydroelectric Engineering

基　　金：云南省自然科学基金(2006A0018M)

摘　　要：采用水力学试验方法,对跌扩型底流消能工的消能及其机理进行了初步分析和试验研究,详细分析了跌扩型底流消能工消力池内水流流态与水流结构,由此论述了该消能工的消能机理,又在试验成果的基础上从消减临底和临墙流速方面分析了跌扩型底流消能工的消能作用。研究成果表明,跌扩型底流消能工,由于跌坎和突扩的存在,大大减小了临底和临墙流速,提高了消能效果。This paper presents an experimental study of a expanding falling-sill bottom-flow energy dissipater and an preliminary analysis on the features of energy dissipation and its mechanism. The flow patterns and structures of such bottom expanding flow in the stilling basin are analyzed in details, and the effects of energy dissipation by the falling-sill and flow expansion in terms of flow velocities near the basin＇s bottom and sidewall are discussed. Results show that these flow velocities are greatly dissipated along the stream owing to bottom flow expanding behind the sill, hence resulting in much greater energy dissipation.

关 键 词：水力学 消能 试验研究 跌扩型底流消能工 突扩比 

分 类 号：TV135.21[水利工程—水力学及河流动力学]