Experimental research of CO2 laser-induced liquid droplet jet flow plasma

CHEN Ziqi; WANG Xinbing; ZUO Duluo

doi:10.7510/jgjs.issn.1001-3806.2016.06.023

In order to study the characteristics and the evolution of laser-induced liquid droplet jet flow plasma, the behaviors of laser-induced liquid droplet plasma were investigated by the shadow method based on laser-droplet interaction system. Time-series images of CO2 laser-induced plasma with liquid droplet were captured. The evolution of air shock wave was obtained and the energy of shockwaves was estimated by theoretical model. The results show that air shock wave occurrs with laser-induced plasma and the radial expansion of shockwaves increases linearly under current time range. In addition, laser energy dissipated in the droplet was estimated to 32% for generating air shockwaves. The characteristics and the evolution of shockwaves generated by laser-induced droplet could provide a reference for laser induced fuel spray ignition.

Experimental research of CO2 laser-induced liquid droplet jet flow plasma

Corresponding author: WANG Xinbing, xbwang@hust.edu.cn;

1. Wuhan National Laboratory for Optoelectronics, Huazhong University of Science & Technology, Wuhan 470074, China

Received Date: 2015-11-20

Accepted Date: 2016-01-11

Available Online: 2016-11-25

Abstract: In order to study the characteristics and the evolution of laser-induced liquid droplet jet flow plasma, the behaviors of laser-induced liquid droplet plasma were investigated by the shadow method based on laser-droplet interaction system. Time-series images of CO2 laser-induced plasma with liquid droplet were captured. The evolution of air shock wave was obtained and the energy of shockwaves was estimated by theoretical model. The results show that air shock wave occurrs with laser-induced plasma and the radial expansion of shockwaves increases linearly under current time range. In addition, laser energy dissipated in the droplet was estimated to 32% for generating air shockwaves. The characteristics and the evolution of shockwaves generated by laser-induced droplet could provide a reference for laser induced fuel spray ignition.

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Reference (21)

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Experimental research of CO2 laser-induced liquid droplet jet flow plasma

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