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本文以空气为介质(Pr=0.701),通过数值模拟的方法在Re=200～1400的范围内,对带有纵向涡发生器的矩形通道的换热及阻力损失进行了模拟分析,并比较了矩形通道、布置一排纵向涡发生器的通道、布置二排纵向涡发生器的通道内的传热与阻力。计算结果表明,纵向涡能有效的起到强化换热的效果,二排涡的效果要优于单排,在较小Re下,涡产生器引入的阻力损失要大于带来的换热强化效果。
In this paper, the air as the medium (Pr = 0.701), by numerical simulation in the Re = 200 ~ 1400 range of rectangular vortex with longitudinal vortex generator heat transfer and resistance loss were simulated and compared Rectangular channels, channels of a row of longitudinal vortex generators, heat transfer and resistance of channels in the rows of longitudinal vortex generators. The results show that the longitudinal vortex can effectively enhance the effect of heat transfer. The effect of two rows of vortex is better than that of single row. Under smaller Re, the loss of resistance introduced by the vortex generator is greater than the heat transfer enhancement .