群島状とフラクタル火炎面を有する予混合乱流伝ぱ火炎の構造モデル : 第1報, モデルの確立と予測結果

抄録

A model for the premixed turbulent flame structure has been developed in which the flame zone of a turbulent flame is composed of two parts: a wrinkled flame front and some island flamelets behind it. Their fractions are supposed to vary continuously according to a proposed function of u'/S_LO, where u' is the turbulence intensity and S_LO is the laminar burning velocity. All flamelets were assumed to be fractal ones. The concepts of "flame thickness" and "transition time" for laminar flames were introduced into the model for turbulent flames. The model provides not only the structural parameters but also the burning velocities of turbulent flames.