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Title: Low Reynolds Number Flow Simulation over Moving Airfoils
Authors: Prabhakar
Keywords: Mechanical Engineering
Issue Date: 2016
Series/Report no.: DI-134;
Abstract: Understanding of flapping wing aerodynamics is important for design of the micro air vehicles. In this project, an immersed boundary based numerical approach is employed to study unsteady aerodynamics due to oscillation of airfoils. The immersed boundary method (IBM), a non-body conforming grid approach, is an effective technique used to solve the fixed boundary as well as moving boundary problems. The effects of chord Reynolds number on the performance of fixed airfoil vehicles are discussed. Immersed boundary method as used in this work is computationally efficient for moving boundary problems also. Further numerical simulation on three different oscillating airfoils as NACA0012, Clarkw airfoil and NACA0012 tailed airfoil are performed. Fluid dynamics and aerodynamic performance of these moving airfoils for both pitching as well as plunging motion is critically analyzed over different reduced frequencies and the stall events are also witnessed. Using immersed boundary method a preliminary fluid structure analysis of spring mounted airfoil is demonstrated and results were presented for displacement of the airfoil.
Appears in Collections:02. ME

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