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Level set based Immersed Boundary method and its application to CFD simulation for moving boundary problem


Author : Deepak. S. Patil, Atul Sharma, Namshad T and Tapobrata Dey

Pages : 204-209, DOi:http://Dx.Doi.Org/10.14741/Ijcet/22774106/spl.5.6.2016.39
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Abstract

A novel level set Immersed Boundary method is used for transient Computational Fluid Dynamics simulation of flow across a moving/rigid Immersed boundary. At various time instants level-set is used to capture moving boundaries accurately with proper numerical implementation of boundary conditions and conservation laws in fluid regions. An in-house code is used to study four different problems ranging from a flow over a stationary circular cylinder, a rotating circular cylinder, pitching of airfoil and an undulating swimming fish-like undulating body with amplitude variations.

Keywords: Immersed Boundary method, Level-set method, Stationary circular cylinder, rotating cylinder, Airfoil-NACA0012, Thrust coefficient, Strouhal number, Computational Fluid Dynamics (CFD), vortices.

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