Complete heat and fluid flow modeling of keyhole formation and collapse during spot laser welding

2013 ◽  
Author(s):  
Mickael Courtois ◽  
Muriel Carin ◽  
Philippe Le Masson ◽  
Sadok Gaied ◽  
Mikhaël Balabane
Keyword(s):  
Fluid Flow ◽  
Laser Welding ◽  
Flow Modeling ◽  
Fluid Flow Modeling ◽  
Heat And Fluid Flow

Coupled heat and fluid flow modeling of the CarboniferousKuna Basin, Alaska: implications for the genesis of the Red Dog PbZnAgBa ore district

2003 ◽  
Vol 78-79 ◽  
pp. 215-219 ◽  
Author(s):  
Grant Garven ◽  
Jeff P. Raffensperger ◽  
Julie A. Dumoulin ◽  
Dwight A. Bradley ◽  
Lorne E. Young ◽  
...  
Keyword(s):  
Fluid Flow ◽  
Flow Modeling ◽  
Fluid Flow Modeling ◽  
Heat And Fluid Flow ◽  
Ore District

Temperature Distribution and Fluid Flow Modeling of Electron Beam Melting® (EBM)

2012 ◽  
Author(s):  
M. Jamshidinia ◽  
F. Kong ◽  
R. Kovacevic
Keyword(s):  
Electron Beam ◽  
Fluid Flow ◽  
Temperature Distribution ◽  
Molten Pool ◽  
Electron Beam Melting ◽  
Control Volume ◽  
Thermal Analyses ◽  
Scanning Speed ◽  
Flow Modeling ◽  
Fluid Flow Modeling

A three-dimensional (3D) numerical model is developed by using control volume method to analyze the effects of the electron beam scanning speed on the temperature distribution and fluid flow of the liquid phase in the electron beam melting® (EBM) of Ti-6Al-4V powder. The numerical calculations are performed by Fluent codes, in which thermal analyses with and without considering fluid flow in the molten pool are compared. A series of experiments are performed with an Electron Beam Melting® machine to verify the numerical accuracy. Compared to thermal analysis without considering convection in the molten pool, a closer numerical prediction of geometrical size of molten pool to the experimental data can be achieved by using thermal and fluid flow modeling. The difference between the melt pool geometry in the two models is due to the consideration of the effects of the outward flow in the fluid flow model caused by surface tension.

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