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Natural Convection In A Vertical Annulus Driven By A Central Heat Generating Rod

机译:中心生热棒驱动的垂直环形空间中的自然对流

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摘要

A numerical study of the conjugate natural convection in a vertical annulus with a centrally located vertical heat generating rod is performed. The formulation in primitive form is solved using a pressure-correction algorithm. A parametric study is conducted by varying the heat generation based Grashof number, aspect ratio and the solid-to-fluid thermal conductivity ratio over wide ranges with the Prandtl number fixed at 0.7. Results are presented for the temperature distributions and Nusselt numbers. The average Nusselt numbers on the inner and outer boundaries show an increasing trend with the Grashof number. Correlations are presented for the Nusselt number and the dimensionless temperatures of interest in terms of the parameters of the problem.
机译:进行了一个垂直的环面共轭自然对流的数值研究,其中心位于垂直的生热棒上。使用压力校正算法可以求解原始形式的公式。通过在较宽的范围内改变热产生的Grashof数,长宽比和固液热导率来进行参数研究,其中Prandtl数固定为0.7。给出了温度分布和Nusselt数的结果。内边界和外边界的平均Nusselt数随Grashof数呈增加趋势。提出了有关问题参数的Nusselt数和感兴趣的无量纲温度的相关性。

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