Abstract The miniature square filament (MSF) is a kind of miniature cuboid vortex generator (MCVG). The effects of a single MCVG (MSF) immersed in various turbulent regions on the original flow and heat transfer performance in a rectangular channel are studied with large eddy simulation. The results show that the synthesis performance coefficients of the cases that setting MCVG in the buffer layer or the logarithmic law region are greater than 1. However, the synthesis performance coefficient of the case that setting MCVG in the viscous sublayer is lower than 1. Moreover, by setting MCVG in the channel, the friction coefficient reduces up to 8.67%, the Nusselt number increases up to 7.04%. The synthesis performance coefficient increases up to 7.39%, and the maximum synthesis performance coefficient is achieved in the case that setting MCVG in the buffer layer.

中文翻译：

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具有微型方丝的通道内的流场特性和传热性能

摘要 微型方形灯丝（MSF）是一种微型长方体涡流发生器（MCVG）。通过大涡模拟研究了浸入各种湍流区域的单个 MCVG (MSF) 对矩形通道中原始流动和传热性能的影响。结果表明，在缓冲层或对数律区域设置MCVG情况下的综合性能系数大于1。而在粘性子层设置MCVG情况下的综合性能系数小于1。而且，通过在通道中设置MCVG，摩擦系数降低了8.67%，努塞尔数增加了7.04%。综合性能系数提升高达7.39%，