Moving-body simulations using overset framework with rigid body dynamics |
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| Affiliation: | 1. Department of Mechanical Engineering, University of Alabama at Birmingham (UAB), Birmingham, AL, United States;2. Applied Research Laboratory, Pennsylvania State University, State College, PA, United States;3. DoD High Performance Computing Modernization Program (HPCMP), User Productivity Enhancement and Technology Transfer (PET) CFD lead at Engineer Research and Development Center (ERDC), Vicksburg, MS, United States;1. Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, 149 Yanchang Road, Shanghai 200072, China;2. Shanghai Key Laboratory of Mechanics in Energy Engineering, 149 Yanchang Road, Shanghai 200072, China;1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, PR China;2. Tianjin Research Institute for Water Transportation Engineering, National Engineering Laboratory for Port Hydraulic Construction Technology, Binhai New Area, Tianjin 300456, PR China;1. Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique, 42, Avenue Gaspard Coriolis, 31057 Toulouse Cedex, France;2. ONERA (French Aerospace Lab), Toulouse, France;3. Airbus Operations SAS, Rte de Narbonne, Toulouse, France |
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| Abstract: | The simulation of flow past bodies in relative motion is a challenging task due to the presence of complex flow features, moving grids, and rigid body movements under the action of external forces and moments. A generalized grid-based overset framework is presented for the simulation of this class of problems. The equations that govern the fluid flows are cast in an integral form and are solved using a cell-centered finite volume upwind scheme. The rigid body dynamics equations are formulated using quaternion and are solved using fourth-order Runge–Kutta (RK) time integration. The overset framework and the six degree of freedom (6-DOF) rigid body dynamics simulators are developed in a library form for easy incorporation into existing flow solvers. The details of the flow solver, the 6-DOF library, and the overset framework are presented in this paper along with the validation results of the developed system. |
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