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Parallel Computations on Three Dimensional Aero-Acoustic Field Past a Circular Cylinder

T-S KIM, J-S KIM, P-U MUN

Abstract


The unsteady three dimensional compressible Reynolds averaged Navier Stokes equation was numerically computed to analyze the flow and aero acoustic fields past a circular cylinder by applying a high order and high resolution numerical method. While the numerical computation domain was set up wider than the methods with non-reflective characteristic boundary condition, the very simple boundary conditions were used. For the numerical result, the periodic characteristic of Strouhal Number due to vortex shedding was comparatively analyzed with other experiment values and two dimensional numerical results. Three dimensional Karman vortex shedding characteristic disturbed by secondary vortices and the propagation characteristic of pressure waves and acoustic waves were analyzed.

Keywords


Three Dimensional aero acoustic fields, Optimized High-Order Compact Scheme, Vortex Shedding, OpenMP Parallelized Computation, Secondary VortexText

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