空化数

衡量局部压降与蒸汽压起始条件的接近程度。

visual calculator多相流

先看流动形态，再相信数字。

该工具把 CFD 设置转换为工况、尺度和主导效应提示。调节下方计算器，观察动态图与计算结果如何一起变化。

输入尺度

模型

判断

cavitationvapor pressurehydrodynamics

公式

KaTeX rendered

\begin{aligned}\text{sigma = (p\_inf - p\_v) / (0.5 rho U\^{}2)}\end{aligned}

ASCII source

sigma = (p_inf - p_v) / (0.5 rho U^2)

p_inf (Pa)p_vapor (Pa)rho (kg/m^3)U (m/s)

cavitation number

0.8725

risk level

high cavitation risk

This does not replace a full cavitation model, but it is a good early screening tool for pumps, injectors, valves, and hydrofoils.