한국전산유체공학회:학술대회논문집
- 한국전산유체공학회 2008년 추계학술대회논문집
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- Pages.97-103
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- 2008
DES를 이용한 초음속 유동내 수직 연료분사 유동의 비정상 3차원 해석
UNSTEADY THREE-DIMENSIONAL ANALYSIS OF TRANSVERSE FUEL INJECTION INTO A SUPERSONIC CROSSFLOW USING DETACHED EDDY SIMULATION
- 발행 : 2008.10.24
초록
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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