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고받음각 델타익 유동의 와류 붕괴 모사를 위한 DES 해석
사정환(J.H. Sa),손미소(M. Son),박수형(S.H. Park),구기범(G. Gu),김민아(M. Kim),정경진(K.J. Jung) 한국전산유체공학회 2013 한국전산유체공학회 학술대회논문집 Vol.2013 No.5
Detached Eddy Simulation(DES) is performed to understand vortex breakdown of a high-angle-of-attack Delta Wing flow. The fifth-order Upwind method is used to reduce turbulent dissipation. The computational results(DES) on ONERA Delta Wing model with a 70° sweep angle are compared with unsteady Reynolds-averaged Navier-Stokes(RANS) results and experimental data for validation with pressure distribution, surface pressure coefficient contour, and streamline distribution.
70도 삼각날개 와류유동의 비정상 RANS 해석 결과 분석
손미소(M. Son),사정환(J. H. Sa),박수형(S.H. Park),구기범(G. Gu),김민아(M. Kim),정경진(K. J. Jung) 한국전산유체공학회 2013 한국전산유체공학회 학술대회논문집 Vol.2013 No.5
Unsteady RANS simulations were conducted in order to understand the physics of vortex flow over a delta wing at a high angle of attack. The feasibility and the accuracy of computational results were assessed through comparative study between computational and experimental data for ONERA 70-degree delta wing. Unsteady flow analysis showed a good agreement with experimental data in axial velocity and vorticity distributions. The vortex breakdown can be successfully traced by using the unsteady RANS simulation.