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首页> 外文期刊>Journal of Heat Transfer >Three-Dimensional Investigation of a Laminar Impinging Square Jet Interaction With Cross-Flow
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Three-Dimensional Investigation of a Laminar Impinging Square Jet Interaction With Cross-Flow

机译：层流撞击方流与横流相互作用的三维研究

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摘要

The flow and heat transfer characteristics of an impinging laminar square jet through cross-flow have been investigated numerically by using the three-dimensional Navier-Stokes and energy equations in steady state. The simulations have been carried out for jet to cross-flow velocity ratios between 0.5 and 10 and for nozzle exit to plate distances between 1D and 6D, where D is the jet width. The complex nature of the flow field featuring a horseshoe vortex has been investigated. The calculated results show that the flow structure is strongly affected by the jet-to-plate distance. In addition, for jet-to-plate, spacing of one jet width and for jet to cross-flow velocity ratios less than 2.5 an additional peak occurs at about three-dimensional downstream of the jet impingement point. For high jet to cross-flow ratios two horseshoe vortices form around the jet in the case of small jet-to-plate spacings.
机译：通过使用三维Navier-Stokes和稳态的能量方程，数值研究了横流撞击的层流方形射流的流动和传热特性。对于射流与横流速度之比在0.5和10之间以及喷嘴出口与印版之间的距离在1D和6D之间进行了模拟，其中D是射流宽度。已经研究了具有马蹄涡流的流场的复杂性质。计算结果表明，流动结构受射流板距的影响很大。另外，对于射流板间间隔为一个射流的宽度和小于2.5的射流与横流速度之比，在射流撞击点的大约三维下游处出现一个附加的峰值。对于高射流与横流比，在较小的射流与板间距的情况下，在射流周围会形成两个马蹄形涡流。

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