荷电雾滴表面带电尘粒捕集的数值分析

摘要

通过数值计算分析了带电粉尘粒子在荷电雾滴上的捕集特性,主要考虑尘粒惯性和静电效应对于提高粒子捕集效率的相对强弱.结果表明,在不同粒径区间内,粒子的惯性效应和雾滴与粒子间的库仑力对强化粒子靶效率的作用需要仔细加以辨认,同时证明了当雾滴弱荷电时,对亚微米带电粒子捕集依然是有效的.%The collection characteristics of charged particles on charged droplets are calculated by an numerical algorithm. with main consideration on the relative strength of particle inertia and electrostatic effect to enhance the efficiencies of particle collection. The result indicates that for enhancing particle target collection efficiencies, the inertia effect of particle and the coulombic force between particles should be carefully distinguished in different particle size ranges; and proves that when droplets are weakly charged, it is still effective for the collection of sub-micron charged particles.