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首页> 外文期刊>Numerical Heat Transfer, Part B. Fundamentals: An International Journal of Computation and Methodology >Numerical investigation of rarefied diatomic gas flow and heat transfer in a microchannel using DSMC with uniform heat flux boundary condition - Part II: Applications
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Numerical investigation of rarefied diatomic gas flow and heat transfer in a microchannel using DSMC with uniform heat flux boundary condition - Part II: Applications

机译：使用均匀热通量边界条件的DSMC对微通道中稀有双原子气体流动和传热的数值研究-第二部分：应用

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摘要

In the first part of this work (Part I), we presented and validated the DSMC-HFS method, which can be used to deal with heat flux specified boundary conditions in DSMC simulations. In this article, the method is applied to demonstrate the general properties of rarefied diatomic gaseous flow in a microchannel under uniform heat flux boundary conditions. The effects of wall heat flux on gaseous flow and heat transfer characteristics are investigated numerically and discussed in detail. It can be concluded from the present research that gaseous rarefication and compressibility increase with the increase of the wall heat flux. Gas acceleration at higher wall heat flux is more obvious than that at lower wall heat flux. The high wall heat flux reduces the mass flow rate and elevates the heat transfer ability except at the channel inlet.
机译：在本文的第一部分（第一部分）中，我们介绍并验证了DSMC-HFS方法，该方法可用于处理DSMC模拟中指定的热通量边界条件。在本文中，该方法用于证明在均匀热通量边界条件下微通道中稀有双原子气体流的一般性质。数值研究了壁热通量对气流和传热特性的影响，并进行了详细讨论。从目前的研究可以得出结论，随着壁热通量的增加，气体的稀疏化和可压缩性增加。高壁热通量下的气体加速比低壁热通量下的气体加速更明显。高壁热通量会降低质量流量，并提高除通道入口处以外的传热能力。

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