Abstract

The present study covers results of non-stationary numerical simulation of three-dimensional flow in the junction region of a low aspect ratio circular cylinder entirely immerged in laminar free convection boundary layer developing over a heated vertical plate. To categorize the effects of the cylinder surface temperature on the dynamics behavior of the forming vortical structure, its size and position both upstream and downstream of the cylinder the results, which prove the presence of a complex coherent vortical structure, are analyzed. In particular, the influence of horseshoe vortex system formed upstream of the cylinder on the free convection heat transfer of the heated vertical plate in the junction area is evaluated. Finally, the importance of the forming vortical structure on the heat transfer computation for the junction region is demonstrated.

中文翻译：

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结流对加热垂直板自由对流换热的影响

摘要

本研究涵盖了三维三维流动的非平稳数值模拟结果，该三维三维流动是完全浸入在加热的垂直板上形成的层流自由对流边界层的低长宽比圆柱体的接合区域中的。为了将圆柱体表面温度对形成的涡旋结构的动力学行为，圆柱体的大小和位置在圆柱体上游和下游的影响进行分类，对结果进行了分析，证明了复杂的相干涡旋结构的存在。特别地，评估了在圆柱体上游形成的马蹄涡流系统对接合区域中加热的垂直板的自由对流传热的影响。最后，