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APPLICATION OF DYNAMIC SUBGRID G-EQUATION MODEL TO LES OF TURBULENT PREMIXED FLAME OVER BACKWARD FACING STEP

Namseob Park
Hyundai Motor Company 772-1, Changduk-Ri, Namyang-Myun, Whasung-Gun, Kyunggi-Do, 445-706, Korea

Toshio Kobayashi
The 2nd Department, Institute of Industrial Science, University of Tokyo 4-6-1, Komaba, Meguro-ku, Tokyo 153-8505, Japan

Nobuyuki Taniguchi
Information Technology Center, University of Tokyo Yayoi, Bunkyo-ku, Tokyo 113-8658, Japan

Аннотация

Large eddy simulation (LES) of turbulent premixed combustion flows over backward facing step been performed by using Dynamic Subgrid G-equation flamelet model. A flamelet model for the premixed flame is combined with a dynamic subgrid combustion model for the filtered propagation flame speed. The objective of study is to investigate the validity of the dynamic subgrid G-equation model to a complex turbulent premixed combustion for the considering of the realistic engineering application.
The calculated results were compared with experimental results and good agreement is obtained.