The third dimensionless parameter in the penetration dynamics of rigid projectiles 刚性弹侵彻动力学中的第三无量纲数
2.
The present results indicate that the quantitative description of the non - dimensional mean lateral streak spacing + differs from the results previously published . the spacing + is not a constant value of 100 . it becomes larger as the reynolds number in terms of shear velocity increase 试验结果表明，低速带间距的无量纲数+并非为以往一致认为的100左右的常数，而是随摩阻雷诺数的增大而逐渐增大，在水力光滑区与摩阻雷诺数成二次方关系，在过渡区则为线性关系。
