0<P<2 000 Pa时：

Sh=0.019P^6.91Re^0.34Sc^0.33

2 000 Pa<P<10 000 Pa时：

Sh=4.36P^-1.17Re^0.34Sc^0.3

Sh=0.55Re^0.72Sc^0.33

适用于0.1<Re<250

Re<400时：

Sh=0.1789a^0.86Re^0.34Sc^0.33

400<Re时：

Sh=（-1.37a³+1.738a²-0.798a+0.167）Re^0.7Sc^0.3