验证圆柱形头体初生空化的缩尺效应

Checking the Scale Effects of Cavitation Inception for Symmetrically Rotational Body Shapes

用'比较法'测试的一些典型的圆柱形头体的初生空化数,证实了在初生空化的试验中用该法确定液体的'零抗拉强度'是可行的.验证了A. KELER博士推荐的描述初生空化缩尺效应的基本经验公式:σ=σ0(1+(v0/V)2)

The scale effects of cavitation inception for symmetrically rotational body shapes are shown,which were measured by means of“Comparative Method”for determining“zero tensile strength”of test liquid during cavitation inception tests.The basically empirical relation of scale effects: σ_j=σ_o(1+(V_o/ V_ref)~2) suggested by Dr.A.KELLER was proved.