Flattening behavior of copper droplets in plasma spray forming
A two-dimensional axisymmetric model,with 8700 and 7500 quadrilateral elements for the fluid and substrate zone separately,was developed to simulate the impacting and flattening process.The volume of fluid technique was employed to track the interface between the air and droplet.The relationships between the droplet pre-impact parameters and the flattening time as well as the flattening ratio were investigated by altering one of the parameters while remaining the others unchanged.The results show that the droplet height reaches its minimum value at approximately half of the spreading time,which also indicates the finish of vertical fluid flow at that time.The flattening ratio increases with the increase of the three pre-impact parameters-droplet diameter,temperature and velocity,even though the flattening time decreases when the droplet velocity increase.
copper droplets flattening behavior simulation plasma spray forming
ZENG Hao-ping
School of Mechanical Engineering,University of Science and Technology Liaoning,Anshan 114051,China
国际会议
2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)
长沙
英文
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）