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STABILIZED FINITE ELEMENT METHOD FOR 3D VORTEX-INDUCED VIBRATION SIMULATION
Raheel Rasool(라힐 라술),Hyung Taek Ahn(안형택) 한국전산유체공학회 2010 한국전산유체공학회 학술대회논문집 Vol.2010 No.11
Vortex-induced vibration of a circular cylinder is simulated within the finite element framework. A stabilized finite element method is employed for the fluid flow and beam structural element is used for the motion of a flexible cylinder. Various coupling strategies between the fluid and structural solvers are discussed. The viability of the approach is presented for the 3D incompressible flow around a flexible circular cylinder.
A STABILIZED FINITE ELEMENT COMPUTATION OF FLOW AROUND OSCILLATING 2D BODIES
안형택(Hyung Taek Ahn),라술 라힐(Raheel Rasool) 한국전산유체공학회 2010 한국전산유체공학회 학술대회논문집 Vol.2010 No.5
Numerical study of an oscillating body in incompressible fluid is performed. Stabilized finite element method comprising of Streamline-Upwind/Petrov-Galerkin (SUPG) and Pressure-Stabilizing/Petrov-Galerkin (PSPG) formulations of linear triangular elements was employed to solve 2D incompressible Navier-Stokes equations whereas the motion of the body was considered by incorporating the arbitrary Langrangian-Eulerian(ALE) formulation. An algebraic moving mesh strategy is utilized for obtaining body conforming mesh deformation at each time step. Two tests cases, namely motion of a circular cylinder and of an airfoil in incompressible flow were analyzed. The model is first validated against the stationary cases and then the capability to handle moving boundaries is demonstrated.