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조화진동 난류 예혼합 화염의 운동학: G-equation을 이용한 모델링 연구
손정호(Jungho Sohn),신동혁(Dong-Hyuk Shin) 한국연소학회 2022 KOSCOSYMPOSIUM논문집 Vol.2022 No.5
This paper develops theoretical and numerical analyses of the nonlinear dynamics of harmonically-forced turbulent premixed flames in an iso-thermal limit. A Key objective is to characterize the turbulent Markstein length in the near field of the flame holder. Through asymptotic analysis, explicit expressions are derived for the un-stretched turbulent flame speed and the turbulent Markstein length. Then, three-dimensional simulations were performed using the G-equation with prescribed stochastic velocity fluctuations to validate the asymptotic analysis.