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A COMPUTATIONAL STUDY ABOUT THE ASYMMETRIC AERODYNAMIC EVOLUTION AROUND A CIRCULAR CYLINDER CAUSED BY A MOVING WALL  

Jung J.Y. (한국항공대학교 항공우주 및 기계공학과)
Chang J.W. (한국항공대학교 항공우주공학과)
Publication Information
Journal of computational fluids engineering / v.11, no.3, 2006 , pp. 64-70 More about this Journal
Abstract
A Computational study was carried out in order to investigate the moving wall effect of a circular cylinder at a Reynolds number of $2.0{\times}10^4$. The viscous-incompressible Navier-Stokes equations and Spalart-Almaras turbulent model of the commercial CFD code were adopted for this numerical analysis. The moving wall was set parallel with the freestream, and moving speed was equal to the freestream velocity. The gap ratio is defined as the distance ratio between the circular cylinder diameter and the height from the moving wall. The results show that there is vortex shedding over the critical gap ratio and aerodynamic loads including amplitude and the Strouhal number change according to the gap ratio.
Keywords
Circular Cylinder; Ground Effect; Moving Wall; Critical Gap-ratio; Shedding Frequency;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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