In the other hand, both the grads of the wall temperature and the gas bulk temperature decrease along the channel, and, the heat transfer coefficient decreases with the increase of rarefaction.

 
  • 在换热方面,与常规通道相似,壁面温度和通道截面气流平均温度的差值沿程增大,但是与常规通道不同的是,无论是壁面温度梯度还是流体截面平均温度的梯度都沿程下降,并且稀薄性增大换热降低。
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