【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。更多还原

【Abstract】 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.更多还原