Effect of the vapour flow on the liquid wall during deep penetration laser welding

Author

Amara, E.H. ; Fabbro, R. ; Hamadi, F. ; Allalou, N. ; Achab, L. ; Mebani, N.

Author_Institution

Laser Mater. Process. Group, CDTA, Algiers

fYear

2005

fDate

17-17 June 2005

Firstpage

660

Lastpage

660

Abstract

In our work, we develop a study of the last mechanism by a numerical modelling approach. We deal with a multiphase problem (gas and liquid), where the gases are the surrounding air and the metallic vapour in the keyhole, and the liquid is the melted metal. Boundary conditions are deduced by using a ray-tracing procedure to calculate the keyhole shape and the local absorbed intensity, and then the Navier-Stokes equation are solved in the compressible case for the metallic vapour phase, and in the incompressible case for the liquid phase and the surrounding air

Keywords

Navier-Stokes equations; compressible flow; laser beam welding; multiphase flow; ray tracing; Navier-Stokes equation; compressible case; deep penetration laser welding; incompressible case; keyhole; keyhole shape; liquid phase; liquid wall; local absorbed intensity; metallic vapour phase; multiphase problem; numerical modelling approach; ray-tracing procedure; surrounding air; vapour flow; Boundary conditions; Fluid flow; Gas lasers; Gases; Laser modes; Navier-Stokes equations; Numerical models; Ray tracing; Shape; Welding;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Europe, 2005. CLEO/Europe. 2005 Conference on

Conference_Location

Munich

Print_ISBN

0-7803-8974-3

Type

conf

DOI

10.1109/CLEOE.2005.1568436

Filename

1568436