Validation of an asymptotic zone conditional expression for turbulent burning velocity against DNS database

영역조건평균에 기초한 난류연소속도의 직접수치해법검증

  • 김수엽 (포항공과대학교 기계공학과 대학원) ;
  • 허강열 (포항공과대학교 기계공학과)
  • Published : 2004.12.31


Zone conditional formulation for the Reynolds average reaction progress variable is used to derive an asymptotic expression for turbulent burning velocity. New DNS runs are performed for validation in a statistically one dimensional steady state configuration. Parametric study is performed with respect to turbulent intensity, integral length scale, density ratio and laminar flame speed. Results show good agreement between DNS results and the asymptotic expression in terms of measured maximum flame surface density and estimated turbulent diffusivity in unburned gas.