한국전산유체공학회:학술대회논문집

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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UNSTEADY THREE-DIMENSIONAL ANALYSIS OF TRANSVERSE FUEL INJECTION INTO A SUPERSONIC CROSSFLOW USING DETACHED EDDY SIMULATION

DES를 이용한 초음속 유동내 수직 연료분사 유동의 비정상 3차원 해석

  • 원수희 (서울대학교 대학원 기계항공공학부) ;
  • 문성영 (부산대학교 대학원 항공우주공학과) ;
  • 정인석 (서울대학교 기계항공공학부) ;
  • 최정열 (부산대학교 항공우주공학과)
  • Published : 2008.03.26
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Abstract

Unsteady three-dimensional flowfields generated by transverse fuel injection into a supersonic mainstream are simulated with a DES turbulence model. Comparisons are made with experimental results in term of the temporal eddy position and eddy formation frequency. The vorticity field around the jet exit is also analyzed to understand the formation mechanism of the jet vortical structures. Results indicate that the DES model correctly predicts the convection characteristics of the large scale eddies. However, it is also observed that the numerical results slightly overpredict the eddy formation frequency. The jet vortical structures are developed from the competing vortices in the recirculation region of upstream boundary.

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