K_σ值变化对叶片空蚀面积的影响的试验研究

Experimental Research on Effect of Variation of K_σ on Cavitation of Blades

采用双金属可拆式叶片结构对某一转轮的空蚀试验表明:K_σ值变化对叶片空蚀面积大小的影响可以由一套凸形曲线表示;在K_σ=1.25～1.75时叶片上空蚀面积最大;工况点变化对叶片空蚀面积的影响主要决定于单位流量。

Cavitation experiments with bimetallic and removable blades indicate that:the effect of the variation of K_σ value on the cavitation area on the blades can be expressed in a series of convex curves;the area of cavitation is the largest when K_σ ranges between 1.25～1.75,and the effect of operation points on the cavitation area mainly depends on the value of Q(?).