Abstract
Axial powder stream concentration between the nozzle end and the deposition point is an important process parameter in the laser aided material deposition process. The powder concentration is greatly influenced by the nozzle geometry in use. This paper describes the numerical and experimental analysis of this important parameter in relation to the coaxial nozzle. The experiments are performed with the different nozzle geometries to generate various flow patterns of the gravity fed powder in a cold stream. The results of the experimental analysis are compared with the numerical simulation and found justified. These results are used in concluding the significance of important nozzle parameters for various powder concentration modes.
Recommended Citation
Y. D. Thakar et al., "Numerical and Experimental Analysis of the Powder Flow Streams in the Laser Aided Material Deposition Process," Proceedings of the 15th Annual Solid Freeform Fabrication Symposium (2004, Austin, TX), pp. 512 - 522, University of Texas at Austin, Aug 2004.
Meeting Name
15th Annual Solid Freeform Fabrication Symposium (2004: Aug. 2-4, Austin, TX)
Department(s)
Mechanical and Aerospace Engineering
Keywords and Phrases
Deposition Process; Flow Patterns; Powder Stream
Document Type
Article - Conference proceedings
Document Version
Final Version
File Type
text
Language(s)
English
Publication Date
04 Aug 2004
Comments
This research was supported by the National Science Foundation Grant Number DMI-9871185, the grants from the U.S. Army Aviation and Missile Command (AMCOM) and U.S. Air Force Research Laboratory contract # FA8650-04-C-5704. Their support is greatly appreciated.