Aiming at the mechanism of laser plasma drag reduction technology,the propagation of the shock wave caused by the nanosecond laser is numerically simulated. The influence of the key parameters on the air drag reduction performance is analyzed. It can be concluded from the simulation results that the performance of the plasma drag reduction is improved greatly by the nanosecond laser,where the percentage of air drag reduction is close to 99% and the time of low air drag is 103 times of the incident laser time. The percentage of air drag reduction decreases with the Mach number increasing because the intensity of the air inflow increased. The percentage increases with the laser energy increasing because the shock wave caused by the nanosecond laser increases. The percentage decreases with the focusing location being far,but the time of low air drag obviously increases.
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陈豪,石磊,马丽华,徐景,卢朝梁,陈永安.纳秒激光等离子体减阻数值模拟[J].激光与红外,2014,44(2):131~135 CHEN Hao, SHI Lei, MA Li-hua, XU Jing, LU Chao-liang, CHEN Yong-an. Numerical simulation of nanosecond laser plasma drag reduction[J]. LASER & INFRARED,2014,44(2):131~135