Katsuhiro Hiraoka
Department of Mechanical and Aerospace Engineering Tokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8550, Japan
Itaru Yoshikawa
Department of Mechanical and Aerospace Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
Naoya Fukushima
Department of Mechanical and Aerospace Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan; Frontier Research Center for Energy and Resources, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan; Department of Prime Mover Engineering, Tokai University,
4-1-1, Kitakaname, Hiratsuka-shi, Kanagawa, Japan
Masayasu Shimura
Department of Mechanical and Aerospace Engineering Tokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8550, Japan
Mamoru Tanahashi
Department of Mechanical and Aerospace Engineering Tokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
Toshio Miyauchi
Dept. Mechanical and Aerospace Eng., Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan; Organization for the Strategic Coordination of Research and Intellectual Properties Meiji University 1-1-1 Higashimita, Tama-ku, Kawasaki, Kanagawa, Japan
SINOPSIS
A fractal dynamic subgrid scale (SGS) combustion model for large eddy simulation (LES) of turbulent premixed combustion which was developed in our previous study (Yoshikawa et al., 2013) is evaluated through static tests on filtered data of direct numerical simulation (DNS) of H2−air turbulent V-shape premixed flame. The model is based on flamelet concept, fractal characteristics of turbulent premixed flames and scale separation in high Reynolds number turbulence and the accuracy has been demonstrated for freely propagating premixed flame in homogeneous isotropic turbulence (HIT). The results of the static tests validate that the present model has high accuracy and is applicable to conditions where strong mean shear exists and the interaction between flame and turbulence is complex. Furthermore, comparison with some conventional SGS combustion models indicates that the present model has superiority to these models in terms of accuracy.