Comparative Study for Different URANS Models for Capturing Flow Separation Inside a Plane Diffuser

Ashraf Kassem, Mohamed E. Madbouly, A. Guaily
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引用次数: 1

Abstract

A comparative numerical study is performed among different URANS turbulence models investigating the ability of the models to capture the deformation of the boundary layer near the separation zone. The results are validated against previously published numerical works (URANS, LES, DNS) and experimental works. The comparison included grid resolution, the pressure distribution, and the velocity profiles at the inclined wall, then the streamlines plot of each model is used to properly estimate the separation and reattachment points.
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不同URANS模型捕捉平面扩散器内流动分离的比较研究
对不同的URANS湍流模型进行了数值对比研究,考察了不同模型对分离区附近边界层变形的捕捉能力。结果与先前发表的数值工作(URANS, LES, DNS)和实验工作进行了验证。对比网格分辨率、压力分布和斜壁面速度分布,利用各模型的流线图合理估计分离点和再附着点。
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