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首页> 外文期刊>Acta polytechnica >Simulation of Free Airfoil Vibrations in Incompressible Viscous Flow — Comparison of FEM and FVM
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Simulation of Free Airfoil Vibrations in Incompressible Viscous Flow — Comparison of FEM and FVM

机译:不可压缩粘性流中自由翼型振动的仿真— FEM和FVM的比较

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摘要

This paper deals with a numerical solution of the interaction of two-dimensional (2-D) incompressible viscous flow and a vibrating profile NACA 0012 with large amplitudes. The laminar flow is described by the Navier-Stokes equations in the arbitrary Lagrangian-Eulerian form. The profile with two degrees of freedom (2-DOF) can rotate around its elastic axis and oscillate in the vertical direction. Its motion is described by a nonlinear system of two ordinary differential equations. Deformations of the computational domain due to the profile motion are treated by the arbitrary Lagrangian-Eulerianmethod. The finite volume method and the finite element method are applied, and the numerical results are compared.
机译:本文研究了二维(2-D)不可压缩粘性流与大振幅振动剖面NACA 0012相互作用的数值解。层流由任意Lagrangian-Eulerian形式的Navier-Stokes方程描述。具有两个自由度(2-DOF)的轮廓可以绕其弹性轴旋转并在垂直方向上振荡。它的运动由两个常微分方程的非线性系统描述。由轮廓运动引起的计算域的变形由任意拉格朗日-欧拉方法处理。应用了有限体积法和有限元法,并对数值结果进行了比较。

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