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首页> 外文期刊>International Journal of Heat and Mass Transfer >Thermal flows around a fully permeable short circular cylinder
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Thermal flows around a fully permeable short circular cylinder

机译：围绕全渗透短圆柱的热流

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摘要

Secondary flows and corresponding endwall heat transfer around a fully permeable (porous) short circular cylinder differ from those around an impermeable (solid) cylinder. There exists a through flow which is portion of the mainstream entering the front of the cylinder and exiting at the rear of the cylinder, and the alteration of an adverse pressure gradient along the plane of symmetry that causes three-dimensional boundary layer separation (or forms horseshoe vortices). This study experimentally demonstrates how these distinctive features vary horseshoe vortices, wake patterns, and endwall heat transfer around the porous short circular cylinder. Furthermore, the fluidic effect of the extent of the through-flow that is determined by the permeability of the porous cylinder on downstream heat transfer is discussed.
机译：完全渗透（多孔）短圆柱体周围的二次流和相应的端壁传热与不渗透（固体）圆柱体周围的二次流和相应的端壁传热不同。存在通流，该通流是主流的一部分，进入圆柱体的前部并从圆柱体的后部流出，并且沿对称平面的逆压力梯度发生变化，从而导致三维边界层分离（或形成马蹄漩涡）。这项研究实验证明了这些独特的特征如何改变马蹄形涡流，尾流模式以及围绕多孔短圆柱体的端壁传热。此外，讨论了由多孔圆柱体的渗透性决定的通流程度对下游传热的流体影响。

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