克努森数
克努森数是流体力学中的无量纲数,指分子平均自由程与特征长度之比,计算式为:
其中,
- 为分子平均自由程
- 为特征长度
对于理想气体,计算式可以写成
其中,
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克努森数是流体力学中的无量纲数,指分子平均自由程与特征长度之比,计算式为:
其中,
对于理想气体,计算式可以写成
其中,
|
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