Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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THE STUDY OF AERO-ACOUSTICS CHARACTERISTICS BY THE BOUNDARY CONDITIONS OF HIGH ORDER SCHEME

고해상도 수치기법의 경계조건에 따른 공력음향 특성에 관한 연구

  • 이상수 (한국항공우주산업(주)) ;
  • 김재수 (조선대학교 항공우주공학과)
  • Published : 2009.09.30
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Abstract

The present paper focuses on the analysis of aero-acoustics characteristic by appling different four boundary conditions. The high-order and high-resolution numerical schemes are used for discrete accurate computation of compressible flow. The four boundary conditions include extrapolation, characteristic boundary condition, zonal characteristic boundary condition. These boundary conditions are applied to the computation of two dimensional circular cylinder flows with Mach number of 0.3 and Reynolds number of 400. The computation results are validated against measurement data and other computation results for the Strouhal frequency of vortex shedding, the mean drag coefficient and root-mean-square lift for the unsteady periodic flow regime. The characteristics of secondary frequency is predicted by three kinds of boundary conditions.

Keywords

References

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