Numerical Simulation and Experimental Measurement of Velocity Field of Powder Fluid in Laser Manufacturing
Laser direct manufacturing and re-fabricating have been used in many important fields in recent years. However, simulation and measurement of velocity fields in carrying gas and powder particles are still a challenge. In this paper finite difference method has been selected to simulate the velocity fields of powder/gas fluid. A novel DPIV system has been developed to measure the velocity fields. The DPIV system mainly consists of Nd+:YAG laser and CCD camera. Comparing the result of DPIV measuring with computer simulating, a good agreement can be obtained. After further developing, DPIV will become a useful device for laser manufacturing.
Guanglin Wang, Huifeng Wang and Jun Liu
X. C. Yang et al., "Numerical Simulation and Experimental Measurement of Velocity Field of Powder Fluid in Laser Manufacturing", Key Engineering Materials, Vols. 392-394, pp. 443-447, 2009