Numerical Simulation of Oscillating Flows over a Circular Cylinder

Tian Li; Ji Ye Zhang; Wei Hua Zhang

doi:10.4028/www.scientific.net/AMM.29-32.414

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 29-32Numerical Simulation of Oscillating Flows over a...

Numerical Simulation of Oscillating Flows over a Circular Cylinder

Abstract:

Numerical Simulation of oscillating flow over a circular cylinder is calculated when the Reynolds number is 100. The space-time finite element method is used to solving the two-dimensional incompressible Navier-Stokes equations. Considering the oscillating flow over a variation of perturbation amplitudes and frequency ratios, the trends of lift coefficient with amplitude and frequency ratio are compared respectively. Besides, the FFT of the lift coefficient curves are analyzed. There is a suddenly change in main frequency and second frequency when A=0.1. The excited frequencies of lift coefficient are discussed, which could be the combination of vortex shedding natural frequency and perturbation frequency, such as |fe－f0|, fe, 2fe－f0, fe＋f0, 2fe＋f0, etc.

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Periodical:

Applied Mechanics and Materials (Volumes 29-32)

Pages:

414-419

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.29-32.414

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Online since:

August 2010

Authors:

Tian Li, Ji Ye Zhang, Wei Hua Zhang

Keywords:

Circular Cylinder, Oscillating Flow, Space-Time Finite Element Method

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