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首页> 外文期刊>International Journal of Heat and Fluid Flow >Large eddy simulations of plane turbulent impinging jets at moderate Reynolds numbers
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Large eddy simulations of plane turbulent impinging jets at moderate Reynolds numbers

机译:雷诺数适中的湍流冲击射流的大涡模拟

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摘要

The flow field of plane impinging jets at moderate Reynolds numbers has been computed using large eddy simulation technique. Two Reynolds numbers (Re = 3000 and 7500) defined by the jet exit conditions are considered. Computations have been carried out using the dynamic Smagorinsky model. The simulations were performed to study the mean velocity, the turbulence statistics along the jet axis and at different vertical locations. The dynamics of the jet is explored using the instantaneous velocity, vorticity and low pressure fields with a focus on the impinging zone. The present results compare favorably to the experimental data available in the literature. The effect of the jet Reynolds number is significant between 3000 and 7500 both on the near and far field structure.
机译:使用大涡模拟技术计算了中等雷诺数的平面撞击射流的流场。考虑由射流出口条件定义的两个雷诺数(Re = 3000和7500)。已经使用动态Smagorinsky模型进行了计算。进行模拟以研究平均速度,沿射流轴和不同垂直位置的湍流统计。使用瞬时速度,涡度和低压场来研究射流的动力学,重点是撞击区域。本结果与文献中提供的实验数据相比具有优势。雷诺数对近场和远场结构的影响在3000至7500之间。

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