摘要
采用 P H O E N I C S 流体动力学计算软件,结合 Marker_ And_ Cell 技术,模拟研究了等离子喷涂熔滴碰撞基体后的扁平过程。结果表明,熔滴沿基体表面的最大铺展速度主要和碰撞速度有关;初始碰撞压力与熔滴的密度及碰撞速度的平方成正比;熔滴的扁平率随熔滴的密度和碰撞速度的增大而增大。
Droplet flattening after impact on flat substrate in plasma spraying is numerically studied by using PHOENICS code and Marker_And_Cell technique. The results show that the peak velocity of droplet flow along substrate surface after impact is mainly affected by impact velocity. The initial impact pressure is directly proportional to droplet density and square impact velocity. The flattening degree grows with the increase of droplet density and impact velocity.
出处
《航空制造技术》
EI
1999年第5期57-59,62,共4页
Aeronautical Manufacturing Technology
关键词
等离子喷涂
扁平率
碰撞压力
数值模拟
Plasma spraying Flattening degree Impact pressure Numerical simulation