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- W2183886382 abstract "The objective of this work is to study the flutter characteristics of an airfoil in a two-dimensional subsonic flow by externally coupling a Reynolds Average Navier Stoke s (RANS) based CFD solver with the in-house structu ral code in time domain. The ANSYS FLOTRAN CFD, a finite element bas ed computational fluid dynamics solver, is adopted here to generate the aerodynamic pressure distributions on an airfoil se ction in subsonic regime. The airfoil dynamics is a ccordingly simulated through external coupling of the ANSYS FLOTRAN CFD solver with a 2DOF airfoil structural model through a Newmarks’s implicit time integration scheme. A symmetric NACA 0012 airfoil of unit chord is chosen for the analys is, with suitable spring stiffness and inertia values so that flutter instability occurs in the subsonic regime. Unsteady motio n in the fluid-structure system is numerically simulated with small initial conditi ons. In the present analysis, the airfoil is not allowed to move and the pitch angle of airfoil is assigned to the air flow at the inlet boundary of the domain. Flutter boundary is indicated by the critical free stream flow velocity (and dynamic pressure) beyond which oscillation amplitudes diverge in time." @default.
- W2183886382 created "2016-06-24" @default.
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- W2183886382 date "2011-11-01" @default.
- W2183886382 modified "2023-09-26" @default.
- W2183886382 title "Time domain simulation of airfoil flutter using fluid structure coupling through FEM based CFD solver" @default.
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