Relationship between heat transfer intensity and absolute vorticity flux intensity in flat tube bank fin channels with Vortex Generators
Relationship between heat transfer intensity and absolute vorticity flux intensity in flat tube bank fin channels with Vortex Generators
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DOI：
10.1504/pcfd.2008.021327
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发表时间：
2008-11
影响因子：
0.7
通讯作者：
Ke-wei Song;Liangbi Wang
中科院分区：
文献类型：
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作者：
Ke-wei Song;Liangbi Wang
通过二次流可以实现强化换热。研究发现，沿主流方向的绝对涡量通量可以描述二次流的强度，并与横向平均的换热强化相对应。报道了为证实这一现象而进行的调查。结果表明，主流方向的绝对涡量通量分布与跨度平均Nusselt数分布相似。Nusselt数和绝对涡量通量的一致性表明，绝对涡量通量可以反映二次流产生的换热强度。
The heat transfer enhancement can be achieved through the secondary flow. It is found that absolute vorticity flux along the main flow can describe the secondary flow intensity and correspond to the heat transfer enhancement averaged in span wise direction. Investigations to verify this phenomenon are reported. The results show that there has a similar distribution for absolute vorticity flux in the main flow direction compared with that for span averaged Nusselt number. The conformance of Nusselt number and absolute vorticity flux shows that absolute vorticity flux can reflect the intensity of heat transfer produced by the secondary flow.