Laser-Induced Breakdown and Detonation in Particle-Laden Systems | Science Publications

American Journal of Applied Sciences

Konstantin Volkov¹ 

关键词: Droplet;    Laser Pulse;    Optical Breakdown;    Detonation;    Numerical Simulation;   

DOI  :  10.3844/ajassp.2015.31.39

学科分类：自然科学（综合）

来源: Science Publications

【 摘 要 】

Simulation of the interaction of alaser pulse with gas-droplet and gas-particle mixtures plays an important rolein environmental and engineering applications. The injection of liquid dropletsor metal particle causes optical breakdown on the individual droplet orparticle and leads to a drop of the detonation minimum pulse energy of themixture. Mathematical models of various stages of the optical breakdown aredeveloped and applied to the analysis of laser-induced breakdown inparticle-laden systems. The numerical calculations are based on an in-housecomputer code using the finite-volume method and high-resolution scheme. Thethreshold of optical breakdown and its dependence on contributing factors(droplet radius, location of droplet, total energy and time of laser pulse,radius of laser spot) has been studied. Minimum pulse energy of detonation wascomputed in the hydrogen-oxygen mixture with metal particles and liquiddroplets.

【 授权许可】

Unknown