WS6 エンジンシリンダ内乱流予混合火炎のフラクタル特性

概要

論文の詳細を見る
Cross-sectional structure of turbulent premixed flame propagating in the closed chamber was investigated by using laser tomography. The fractal characteristics such as the fractal dimension, the inner cutoff scale and the outer cutoff scale of the turbulent premixed flames were determined by the obtained flame boundaries. Consequently the fractal dimension was expressed as the function of the turbulence intensity, the laminar burning velocity and the mixture density. The non-dimensional inner cutoff scale was expressed as the function of Karlovitz number. The outer cutoff scale was consistent with the flame radius. The fractal dimension under the condition of lean burn limit was also measured by the same method. The values of fractal dimension were larger than 1.36,that of the turbulence.
日本流体力学会の論文
2001-07-31