部分受热平行板垂直通道内的混合对流换热

Fourteenth Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (ITherm) Pub Date : 2014-05-27 DOI:10.1109/ITHERM.2014.6892345

H. Celik, M. Mobedi

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引用次数: 0

摘要

研究了二维对称部分加热垂直通道中的层流混合对流换热问题。受热部分存在于通道的两侧壁上，它们的温度是恒定的。每面墙加热部分的数量由2个改为4个;然而，加热部分的总长度是固定的。流体入口速度均匀，以空气为工作流体。采用有限体积法对连续方程、动量方程和能量方程进行了数值求解。结果与文献中已有的研究进行了比较，并观察到良好的一致性。得到了Gr / Re2 = 0.0033和13.33时的速度场和温度场。根据得到的温度分布，得到了不同受热部分数量下局部努塞尔数的变化情况，并绘制了图。文中还讨论了平均努塞尔数随加热部分数的变化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Mixed convection heat transfer in a partially heated parallel plate vertical channel

Laminar mixed convection heat transfer in a two dimensional symmetrically and partially heated vertical channel is investigated. The heated portions exist on the both walls of channel and their temperature is constant. The number of the heated portions is changed from 2 to 4 for each wall; however the total length of the heated portions is fixed. The fluid inlet velocity is uniform and air is taken as working fluid. The continuity, momentum and energy equations are solved numerically by using finite volume method. Results are compared with available studies in literature and good agreement is observed. The velocity and temperature fields are obtained for Gr / Re2 = 0.0033 and 13.33. Based on the obtained temperature distributions, the change of local Nusselt number for different number of heated portions are obtained and plotted. The variation of the mean Nusselt number with the number of heated portions is also discussed.

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Fourteenth Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (ITherm)

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