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首页> 外文期刊>Journal of Heat Transfer >Comparison of Various RANS Models for Impinging Round Jet Cooling From a Cylinder
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Comparison of Various RANS Models for Impinging Round Jet Cooling From a Cylinder

机译：各种RAN模型的比较撞击圆柱体的圆形喷射冷却

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摘要

The numerical analysis for the round jet impingement over a circular cylinder has been carried out. The v(2)f turbulence model is used for the numerical analysis and compared with the two equation turbulence models from the fluid flow and the heat transfer point of view. Further, the numerical results for the heat transfer with original and modified v(2)f turbulence model are compared with the experimental results. The nozzle is placed orthogonally to the target surface (heated cylindrical surface). The flow is assumed as the steady, incompressible, three-dimensional and turbulent. The spacing between the nozzle exit and the target surface ranges from 4 to 15 times the nozzle diameter. The Reynolds number based on the nozzle diameter ranges from 23,000 to 38,800. From the heat transfer results, the modified v(2)f turbulence model is better as compared to the other turbulence models. The modified v(2)f turbulence model has the least error for the numerical Nusselt number at the stagnation point and wall jet region.
机译：已经进行了在圆柱上的圆形喷射冲击的数值分析。 V（2）F湍流模型用于数值分析，与来自流体流动的两个等式湍流模型和传热观点相比。此外，将具有原始和改性V（2）F湍流模型的传热的数值结果与实验结果进行了比较。喷嘴与目标表面（加热圆柱形表面）正交放置。假设流量为稳定，不可压缩，三维和湍流。喷嘴出口和目标表面之间的间距范围为喷嘴直径的4至15倍。基于喷嘴直径的雷诺数范围为23,000至38,800。根据传热结果，与其他湍流模型相比，改性的V（2）F湍流模型更好。改进的V（2）F湍流模型对停滞点和壁射流区域的数值露节数具有最小的误差。

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