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The State of the Art of Hybrid RANS/LES Modeling for the Simulation of Turbulent Flows
Flow, Turbulence and Combustion ( IF 2.4 ) Pub Date : 2017-07-01 , DOI: 10.1007/s10494-017-9828-8
Bruno Chaouat 1
Affiliation  

This review presents the state of the art of hybrid RANS/LES modeling for the simulation of turbulent flows. After recalling the modeling used in RANS and LES methodologies, we propose in a first step a theoretical formalism developed in the spectral space that allows to unify the RANS and LES methods from a physical standpoint. In a second step, we discuss the principle of the hybrid RANS/LES methods capable of representing a RANS-type behavior in the vicinity of a solid boundary and an LES-type behavior far away from the wall boundary. Then, we analyze the principal hybrid RANS/LES methods usually used to perform numerical simulation of turbulent flows encountered in engineering applications. In particular, we investigate the very large eddy simulation (VLES), the detached eddy simulation (DES), the partially integrated transport modeling (PITM) method, the partially averaged Navier-Stokes (PANS) method, and the scale adaptive simulation (SAS) from a physical point of view. Finally, we establish the connection between these methods and more precisely, the link between PITM and PANS as well as DES and PITM showing that these methods that have been built by different ways, practical or theoretical manners have common points of comparison. It is the opinion of the author to consider that the most appropriate method for a particular application will depend on the expectations of the engineer and the computational resources the user is prepared to expend on the problem.

中文翻译:

用于湍流模拟的混合 RANS/LES 建模的最新技术

本综述介绍了用于模拟湍流的混合 RANS/LES 建模的最新技术。在回顾 RANS 和 LES 方法中使用的建模之后,我们在第一步中提出了一种在光谱空间中开发的理论形式,它允许从物理角度统一 RANS 和 LES 方法。在第二步中,我们讨论了混合 RANS/LES 方法的原理,该方法能够表示固体边界附近的 RANS 类型行为和远离壁边界的 LES 类型行为。然后,我们分析了通常用于对工程应用中遇到的湍流进行数值模拟的主要混合 RANS/LES 方法。特别是,我们研究了超大涡模拟 (VLES)、分离涡模拟 (DES)、从物理角度来看,部分综合运输建模(PITM)方法、部分平均纳维-斯托克斯(PANS)方法和尺度自适应模拟(SAS)方法。最后,我们建立了这些方法之间的联系,更准确地说,PITM 和 PANS 以及 DES 和 PITM 之间的联系表明,这些以不同方式、实践或理论方式构建的方法具有共同的比较点。作者认为,对于特定应用程序最合适的方法将取决于工程师的期望和用户准备在问题上花费的计算资源。我们建立了这些方法之间的联系,更准确地说,PITM 和 PANS 以及 DES 和 PITM 之间的联系表明,这些以不同方式、实践或理论方式构建的方法具有共同的比较点。作者认为,对于特定应用程序最合适的方法将取决于工程师的期望和用户准备在问题上花费的计算资源。我们建立了这些方法之间的联系,更准确地说,PITM 和 PANS 以及 DES 和 PITM 之间的联系表明,这些以不同方式、实践或理论方式构建的方法具有共同的比较点。作者认为,对于特定应用程序最合适的方法将取决于工程师的期望和用户准备在问题上花费的计算资源。
更新日期:2017-07-01
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