The 3D Design and Numerical Simulation of Two-phase Flow in the Laser Rapid Prototyping Coaxial Powder Delivery System
The metal powder direct and rapid prototyping technology is one of the most developing methods in the Laser rapid prototyping technique. And the coaxial powder delivery system is the key technique. The purpose of this paper is to introduce a new type of coaxial powder delivery system and simulate the metal powder and shield gas flow in the powder nozzle. Firstly, a 2D and a 3D model of the new coaxial powder delivery system are established. Then gas-solid two-phase flow model and the k-ε turbulent model are selected to simulate the flow of metal powder in powder nozzle. And the Euler-Lagrange method is used in the simulating computation The results demonstrates that the new coaxial powder delivery system has stable performance, uniform powder flux, high cooling efficiency and long useful life, which are especially important in the laser rapid prototyping system.
Laser rapid prototype coaxial powder delivery system numerical simulation pressure distribution velocity distribution.
Wang Zhijian Zhang Anna Shang Xiaofeng
School of Mechanical and Electrical Engineering, Shenyang Institute of Aeronautical Engineering,Shen Liaoning Province Meteorology Information and Technical Support Center, Shenyang, 110015, China
国际会议
北京
英文
539-544
2008-11-06（万方平台首次上网日期，不代表论文的发表时间）