Numerical analysis on longitudinal location optimization of vortex generator in compact heat exchangers
Numerical analysis on longitudinal location optimization of vortex generator in compact heat exchangers
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DOI：
10.1002/fld.2278
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发表时间：
2011-06
影响因子：
1.8
通讯作者：
M. Gorji;H. Mirgolbabaei;Amin Barari;G. Domairry;N. Nadim
中科院分区：
文献类型：
--
作者：
M. Gorji;H. Mirgolbabaei;Amin Barari;G. Domairry;N. Nadim
本文采用数值模型、曲线模型和湍流模型研究了在不同雷诺数（Reynolds数为500 ~ 3000）下，涡流发生器纵向位移对换热和流动的影响。数值模型已被验证与以前的研究，这是在一个特定的情况下相似的实验结果。数值模拟结果表明，涡量增强会增加Nusselt数和压降。建议的趋势不是恒定的，参数变化的模式取决于雷诺数。最后，根据参数变化的顺序，提出了压降和努塞尔数的共轭优化。版权所有© 2010约翰威利父子有限公司.
In this paper, numerical, curvilinear and turbulent model has been used to investigate the effect of vortex generator's longitudinal displacement on heat transfer and fluid flow in different Reynolds numbers ranging from 500 to 3000. The numerical model has been validated with experimental results of a former study, which is resembled in a particular case. Numerical simulation shows that the vorticity enhancement would increase both Nusselt number and pressure drop. Proposed trend is not constant and the pattern in which parameters change is dependent on Reynolds number. Finally, a conjugated optimization of pressure drop and the Nusselt number has been suggested based on the order of parameter changes. Copyright © 2010 John Wiley & Sons, Ltd.