Numerical Simulation of the Evolution of a Curved Turbulent Wake Subjected to an Adverse Pressure Gradient

A. S. Stabnikov, M. Kh. Strelets, A. K. Travin, M. L. Shur
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Abstract

The results are presented of the numerical experiments aimed at obtaining detailed and reliable data on the mean and turbulent characteristics of the asymmetric curved turbulent wake behind a flat plate (FP) subjected to an adverse pressure gradient (APG). The computations are performed for the model wake configuration designed earlier by the authors with the use of the scale-resolving zonal Reynolds-averaged Navier–Stokes-improved delayed detached-eddy simulation (RANS-IDDES) approach to represent turbulence. The reliability of the obtained results is confirmed by the grid independence of the obtained solutions, and a comparison of these results with the corresponding results of computations performed with the use of various semiempirical RANS models indicates the insufficient accuracy of the latter and the need for their further improvement.

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受逆向压力梯度影响的弯曲湍流尾流演变的数值模拟
摘要 本文介绍了数值实验的结果,这些实验旨在获得关于受到不利压力梯度(APG)作用的平板(FP)后非对称弯曲湍流尾流的平均特性和湍流特性的详细而可靠的数据。计算是针对作者早先设计的模型湍流尾流配置进行的,使用了尺度解析带状雷诺平均纳维-斯托克斯改进延迟分离涡模拟(RANS-IDDES)方法来表示湍流。这些结果与使用各种半经验 RANS 模型进行计算的相应结果进行比较后发现,后者的精确度不够,需要进一步改进。
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来源期刊
Mathematical Models and Computer Simulations
Mathematical Models and Computer Simulations Mathematics-Computational Mathematics
CiteScore
1.20
自引率
0.00%
发文量
99
期刊介绍: Mathematical Models and Computer Simulations  is a journal that publishes high-quality and original articles at the forefront of development of mathematical models, numerical methods, computer-assisted studies in science and engineering with the potential for impact across the sciences, and construction of massively parallel codes for supercomputers. The problem-oriented papers are devoted to various problems including industrial mathematics, numerical simulation in multiscale and multiphysics, materials science, chemistry, economics, social, and life sciences.
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