【摘要】 本文采用离轴高速多脉冲红宝石激光全息摄影仪研究高温高压环境中乳化液喷雾的雾化和蒸发过程,记录方式为象面全息方式,再现时分别采用激光和白光光源。实验发现:在适当的温度压力条件下,乳化液喷雾可以发生微爆现象,微爆呈团状,又称“团状微爆”,也称为“二次雾化”,微爆能量可以将众多的小液滴及液滴碎片抛出液束区,有效地改善液体与环境气体的混合过程,具有重要的理论意义和实用价值。更多还原

【Abstract】 Atomization and evaporation processes of emulsion sprays were observed with a multi-pulsed, off-axis, image-plane, ruby laser holocamera in a high temperature, high pressure combustion bomb. The laser and white light beams are employed in the reconstruction. The experimental results show that, the micro-explosion of emulsion sprays can happen in appropriate temperature and pressure conditions, and the micro-explosion appears to be group style, i.e., ’the group micro-explosions’. The explosions eject droplet fragments from the spray region away, improving the fuel-air mixing process. The results are important to study in theory and applications.更多还原