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通过建立二维数值分析模型,分析了不同进气温度及压力时,带电纳米粒子在激波和电场力耦合作用下的加速特性以及对粒子撞击基板速度的影响。结果表明:弓形激波气体压缩层是造成纳米粒子减速的主要因素,弓形激波气体压缩层越薄粒子撞击基板时速度越大;外加电场时,带电纳米粒子撞击基板的速度得到较大提升。

The numerical simulation using an established two-dimensional(2D) numerical model was performed to analyze the effects of the bow shock coupled with electrostatic field on the acceleration of charged particles and the particle impact speed at different inlet nitrogen temperatures and pressures.The results show that the compression layer in the bow shock is a major factor for slowing down nano and submicron particles.And the thinner the compression layer in bow shock is the higher the particle impact speed is.The particle impact speed can be improved significantly by applying the electrostatic force on the charged nano and submicron particles.

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