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Liutex force field model applied to three-dimensional flows around a circular cylinder at Re=3900

Journal of Hydrodynamics 2021年第3期33卷 479-487页

作者： Wei-wen Zhao Chun-hui Ma De-cheng Wan Yi-qian Wang Computational Marine Hydrodynamics Lab(CMHL) School of Naval ArchitectureOcean and Civil EngineeringShanghai Jiao Tong UniversityShanghai200240China Ocean College Zhejiang UniversityZhoushan316021China School of Mathematical Science Soochow UniversitySuzhou215006China

Recently,the Liutex-based force field models are proposed and applied to some two-dimensional flows to explore the possibility of direct vortex control *** this paper,we applied the Liutex-based centripetal force model to three-dimensional flow around a circular cylinder at Re=*** turbulent flows around the three-dimensional cylinder are modeled by the delayed detached-eddy simulations based on the two-equation k-ω shear stress transport(SST)*** cylinder flow without adding the force field model is simulated in the first *** statistical flow quantities are compared with experimental data to validate the accuracy of the current numerical *** the force field model is applied to the momentum equation in a specific control region near the cylinder to study the change of flow field and hydrodynamic *** effect of different control region locations with the same force field strength is discussed to find out the most influenced locations on the drag and *** on the screened control region,the influence source term strength is further *** on the global statistical flow quantities,local instantaneous three-dimensional flow structures are analyzed and *** is concluded that the Liutex-based force field model can effectively change the hydrodynamic behavior of flow past a cylinder and may provide a new direction for performance improvement and optimization.

关键词： vortex manipulate flow control vortex shedding Liutex vector

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