溢洪道空化特性试验研究  

Experimental study on flow cavitation of a spillway

作　　者：刘韩生[1] 李广来[1] 安梦雄[1] 

机构地区：[1]西北农林科技大学水利与建筑工程学院,陕西杨凌712100

出　　处：《水力发电学报》2010年第6期90-94,共5页Journal of Hydroelectric Engineering

摘　　要：对某一实际工程溢洪道进行了减压模型试验,观测了多个部位的垂直升坎初生空化数,表明不仅不同部位的水流空化数σ不同,而且其凸体初生空化数σi也不同,单一指标不能反映溢洪道的空化特性,σ/σi能够反映溢洪道的空化特性。Hydraulic model test of a real spillway is conducted in a vacuum tank with a measurement of incipient cavitation number σi at several locations.The test shows that,at different locations,the cavitation numbers σ are different and the incipient cavitation numbers σi of an isolated surface irregularity are also different.Neither the single parameter σ nor σi can represent the cavitation status of the spillway,while the ratio σ /σi is a suitable parameter.

关 键 词：水力学 空化数 初生空化数 凸体 减压模型试验 

分 类 号：TV131.32[水利工程—水力学及河流动力学]