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首页> 外文期刊>International Journal of Heat and Mass Transfer >Choked flow and heat transfer of low density gas in a narrow parallel-plate channel with uniformly heating walls
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Choked flow and heat transfer of low density gas in a narrow parallel-plate channel with uniformly heating walls

机译：低密度气体在加热壁均匀的狭窄平行平板通道中的flow流和传热

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摘要

The discharge and heat transfer characteristics of the continuum and slip choked gas flows through a narrow parallel-plate channel with uniform heat flux walls are studied by experimental means, numerical simulation, and analytical approximate solution. The numerical results of the discharge coefficient and the wall surface temperature distributions agree relatively well with the experimental results. The effects of the heat transfer at the walls on the discharge coefficient can be correlated with the dimensionless heat input at the walls. Three kinds of Nusselt numbers which are defined by adiabatic wall, bulk mean, and total temperatures as a reference temperature, respectively, are proposed and the effects of the viscous heating on these Nusselt numbers are clarified.
机译：通过实验手段，数值模拟和解析近似解，研究了连续气和滑流阻气在狭窄的平行板通道中的均匀流动通量。放电系数和壁面温度分布的数值结果与实验结果比较吻合。壁上的热传递对排放系数的影响可以与壁上输入的无量纲热输入相关。提出了分别由绝热壁，体均温度和总温度定义的三种Nusselt数，并阐明了粘性加热对这些Nusselt数的影响。

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