努森数 knudsen number
- 当努森数大于0.045时,连续介质模型与分子运动模型模拟结果差异较大。
When Knudsen number exceeds 0.0045, results of the continuum model obviously deviate from these of the kinetic. - 数值模拟结果表明,稀薄效应对气体阻尼的影响较大,随着克努森数的不断增大,气体阻尼逐渐减小。
Simulation results show that rarefaction effect plays an important role in gas damping, which decreases as Kn Number increases. - 计算表明,努森数是表征稀薄效应的特征参数,而热蠕动效应的强弱依赖于雷诺数。
Simulations show that Kn is a key parameter in determining the magnitude of rarefaction effects while Re is a key parameter indicating the thermal creep.
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