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首页> 外文期刊>Journal of Heat Transfer >Three-Dimensional Simulations of Enhanced Heat Transfer in a Flat Passage Downstream From A Grooved Channel
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Three-Dimensional Simulations of Enhanced Heat Transfer in a Flat Passage Downstream From A Grooved Channel

机译:槽形通道下游平坦通道中强化传热的三维模拟

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摘要

Spectral element simulations of three-dimensional flow and augmented convection in a flat passage downstream from a fully developed channel with symmetric, transverse grooves on opposite walls were performed for 405≤Re≤764. Unsteady flow that develops in the grooved region persists several groove-lengths into the flat passage, increasing both local heat transfer and pressure gradient relative to that in a steady flat passage. More- over, the heat transfer for a given pumping power in the first three groove-lengths of the flat passage was greater than the levels observed in a fully developed grooved passage.
机译:在405≤Re≤764的条件下,在完全发达的通道下游(在相对的壁上具有对称的横向沟槽)的下游平坦通道中进行三维流动和增强对流的频谱元素模拟。在带槽区域中产生的非恒定流会在平坦通道中保留多个凹槽长度,相对于稳定平坦通道而言,局部传热和压力梯度都会增加。此外,对于给定的泵送功率,在平通道的前三个凹槽长度中的传热要大于在完全展开的凹槽通道中观察到的水平。

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