한국전산유체공학회:학술대회논문집

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
권호 표지

COMPUTATION OF TRANSITION FLOW WITH LAMINAR SEPARATION BUBBLE OVER AN AIRFOIL

익형의 층류박리를 동반한 천이 유동 해석

  • 전상언 (건국대학교 대학원 항공우주정보시스템공학과) ;
  • 박수형 (건국대학교 항공우주정보시스템공학과) ;
  • 김상호 (건국대학교 항공우주정보시스템공학과) ;
  • 변영환 (건국대학교 항공우주정보시스템공학과) ;
  • 이재우 (건국대학교 항공우주정보시스템공학과) ;
  • 정경진 (국방과학연구소)
  • Published : 2009.11.27
Download PDF
⟨ Previous Next ⟩

Abstract

Laminar separation bubble and transitional flow over an airfoil are investigated at a moderate range of Reynolds numbers. In this research, a Reynolds-Averaged Navier-Stokes code is coupled with an empirical transition model that can predict transition onset points and the length of transition region. Without solving the boundary layer equations, approximated e-N method is directly applied to the RANS code and iteratively solved together. The computational results are compared with the experimental data for NACA0012 airfoil. Results of transition onset point and length are compared well with experimental and XFOIL prediction. In high angle of attack the present RANS results show better agreement than XFOIL results using the boundary layer equations.

Keywords