Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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COMPUTATIONAL FLUID DYNAMICS OF THE LOW-SPEED LONGITUDINAL AERODYNAMIC CHARACTERISTICS FOR BWB TYPE UCAV CONFIGURATION

연속일체형 날개-동체 타입 UCAV 형상의 저속 종방향 공력특성에 대한 전산유동해석

  • Park, S.H. (Dept. of Aerosystem Engineering, Hanseo Univ.) ;
  • Chang, K. (Dept. of Aeromechanical Engineering, Hanseo Univ.) ;
  • Shim, H.J. (Hanhwa Corporation R&D Center, Surface-to-Air System) ;
  • Sheen, D.J. (Dept. of Aeromechanical Engineering, Hanseo Univ.) ;
  • Park, S.H. (Dept. of Aerospace Information Engineering, Konkuk Univ.)
  • 박상현 (한서대학교 항공시스템공학과) ;
  • 장경식 (한서대학교 항공기계학과) ;
  • 심호준 ((주)한화 종합연구소 대공체계팀) ;
  • 신동진 (한서대학교 항공기계학과) ;
  • 박수형 (건국대학교 항공우주정보시스템학과)
  • Received : 2016.06.08
  • Accepted : 2016.09.13
  • Published : 2016.09.30
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Abstract

In the present work, numerical simulations were conducted on the scaled model of the BWB type UCAV in the subsonic region using ANSYS FLUENT V15. The prediction method was validated through comparison with experimental results and the effect of the twisted wing was investigated. To consider the transitional flow phenomenon, ${\gamma}$ transition model based on SST model was adopted. The coefficients of lift, drag and pitching moment were compared with experimental results and the pressure distribution and streamlines were investigated. The twisted wing decreases the lift force but increases lift-to-drag ratio through delay of stall and leading edge vortex's movement to the front, also the non-linearity of the pitching moment is decreased.

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References

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