Numerical Simulation and Experimental Measurement of Velocity Field of Powder Fluid in Laser Manufacturing

Xi Chen Yang; N. Yang; Z. Dong

doi:10.4028/www.scientific.net/KEM.392-394.443

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 392-394Numerical Simulation and Experimental Measurement...

Numerical Simulation and Experimental Measurement of Velocity Field of Powder Fluid in Laser Manufacturing

Abstract:

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.

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Periodical:

Key Engineering Materials (Volumes 392-394)

Pages:

443-447

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.392-394.443

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Online since:

October 2008

Authors:

Xi Chen Yang, N. Yang, Z. Dong

Keywords:

Charge Coupled Devices (CCD), Digital Particle Image, Laser Manufacturing, Measure, Powder Velocity Field

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