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CONJUGATE NATURAL CONVECTION IN AN ENCLOSURE WITH LOCAL HEAT SOURCES

机译：将局部对流与自然热对合

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摘要

The development of unsteady conjugate natural convection in an enclosure has been numer-ically studied. The decision region is common in many applications, such as environmental control (e.g., room), applied chemistry (e.g., storage reservoir), and electronics (e.g., cabinets). The enclosure considered has thick walls, two heat sources, and a zone with an elevated heat transfer intensity. The heat sources are isothermal. The governing unsteady, three-dimensional heat transfer equations, written in dimensionless terms of the voracity vector, vector potential functions, and temperature, have been solved using an implicit finite-difference method. The conjugate heat transfer in the enclosure is investigated by means of a continuum model, which treats the fluid and solid constituents individually. The solution has the following parameters: the Grashof number Gr and the Prandtl number Pr. Results have been obtained for a Prandtl number of 0.702 and Grashof number ranged from 10~4 to 10~7.
机译：数值模拟了封闭环境中非稳态共轭自然对流的发展。决策区域在许多应用中都很常见，例如环境控制（例如房间），应用化学（例如存储容器）和电子设备（例如机柜）。所考虑的外壳具有厚壁，两个热源以及一个传热强度较高的区域。热源是等温的。用隐含有限差分法求解了用不稳定向量，向量势函数和温度的无量纲形式表示的支配性非稳态三维传热方程。外壳中的共轭传热通过连续模型进行研究，该模型分别处理流体和固体成分。该解决方案具有以下参数：Grashof数Gr和Prandtl数Pr。对于0.702的Prandtl数和Grashof数，已获得结果，范围为10〜4至10〜7。

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