A thermal hydraulic study of convective heat transfer in 3 × 3 square array of heated vertical cylinders is carried out using computational fluid dynamics (CFD). Two different CFD approaches were used, i.e., full structural details (FSD) and porous media modeling (PMM). The computational requirement in PMM declined significantly due the porous media approximation. The PMM only gives the overall flow and temperature field. In the FSD model all the geometry details are presented without any approximation. The PMM and FSD results are compared to experimental data. In general, the prediction of temperature profiles from both PMM and FSD agreed well with the experimental data.

中文翻译：

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薄垂直圆柱体的封闭组件中的自然对流传热– CFD研究

使用计算流体力学（CFD）对3×3方形加热垂直气缸中的对流传热进行热力水力研究。使用了两种不同的CFD方法，即完整结构细节（FSD）和多孔介质建模（PMM）。由于多孔介质的近似，PMM中的计算要求显着下降。PMM仅给出整体流量和温度场。在FSD模型中，所有几何图形细节都没有任何近似表示。将PMM和FSD结果与实验数据进行比较。通常，从PMM和FSD预测温度曲线与实验数据吻合良好。