WS3 乱流予混合火炎の流れ場と火炎構造

概要

論文の詳細を見る
Normally, LDV (laser-doppler velocimeter) is used for examining the flow field of combustion. Since the velocity data is interpolated to determine turbulence scale, it does include errors so that the auto-correlation coefficient is higher, resulting in larger integral time scale of turbulence. Slot-Correlation method is useful to handle the LDV data directly. In this study, by using the Slot-Correlation method, the experimental conditions have been examined on the combustion diagram. Premixed flames in highly turbulent flow are stabilized by a cyclone-jet combustor. To investigate the flame structure, temperature field and ion characteristics have been also examined. Results show that the flow field is changed by combustion and the turbulence is reduced, with the smaller turbulence scale. On the combustion diagram, the condition of U_m < 15m/s belongs to the flamelet regime, and that of U_m > 20m/s belongs to the distributed reaction zone regime.
日本流体力学会の論文
2001-07-31