Numerical simulations using Scale-Adaptive Simulation (SAS) hybrid modeling technique have been conducted on a rotating arrangement of three equidistantly spaced cylinders corresponding to the experiments of Ullah, Fabijanic, and Estevadeordal (AIAA 2020-2671) in an effort to investigate and provide insight to the complex structure of the flowfield. SAS is one of a growing number of hybrid turbulence modeling techniques, allowing greater resolution of turbulence scales than possible with a Reynolds-averaged Navier Stokes (RANS) model for a fraction of the computational cost of Large Eddy Simulation (LES). In this study SAS technique based on SST two equation model (SAS-SST) is employed. It is found that SAS-SST provided excellent resolution of turbulence scales for Re = 858 and Re = 7150 rotating cases. Non-rotating (static) case at Re = 57 did not trigger the von Karman production term resulting in URANS solutions. Good agreement between computations and experimental data is obtained for the computed cases. The computational results provided insight to the complex flow structure.
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