三峡船闸末级闸首超长泄水廊道中阀门水力学关键问题研究(1)——正常开启过程的阀门水动力学特性

Hydraulic study of valve with extra long emptying culvert of the Three Gorges Lock's last chamber (1) —Hydrodynamic characteristics of valve with normal valve opening

利用物理模型试验和数学模型计算 ,分析了三峡船闸末级闸首泄水廊道中阀门在正常开启过程中 ,阀门段的水流流态特征 ,阐述了非恒定流条件下的阀门段廊道水流压力、阀门启门力和阀门段空化特性 ,确定了反向弧形门各开度下的临界空化数 .

Based on the results of physical model tests and mathematic model calculation, the characteristics of flow pattern in the valve stretch, with normal valve opening and extra long emptying culvert, of the Three Gorges Lock's last chamber are analyzed. Specific characters of flow pressure and cavitation in the valve stretch, and of hoisting load are described. And the critical values of cavitation for different openings of reverse tainter valves are determined.