### Skapa referens, olika format (klipp och klistra)

**Harvard**

Choquet, I., Nilsson, H. och Sass-Tisovskaya, M. (2011) *Modeling and simulation of a heat source in electric arc welding*.

** BibTeX **

@conference{

Choquet2011,

author={Choquet, Isabelle and Nilsson, Håkan and Sass-Tisovskaya, Margarita},

title={Modeling and simulation of a heat source in electric arc welding},

booktitle={Proceedings from the 4th Swedish Production Symposium, Lund, Sweden},

pages={202-211},

abstract={This study focused on the modeling and simulation of a plasma heat source applied to
electric arc welding. The heat source was modeled in three space dimensions coupling
thermal fluid mechanics with electromagnetism. Two approaches were considered for
calculating the magnetic field: i) three-dimensional, and ii) axi-symmetric. The anode
and cathode were treated as boundary conditions. The model was implemented in the
open source CFD software OpenFOAM-1.6.x. The electromagnetic part of the solver
was tested against analytic solution for an infinite electric rod. Perfect agreement was
obtained. The complete solver was tested against experimental measurements for Gas
Tungsten Arc Welding (GTAW) with an axi-symmetric configuration. The shielding gas
was argon with thermodynamic and transport properties covering a temperature range
from 200 to 30 000 K. The numerical solutions then depend greatly on the approach
used for calculating the magnetic field. The axi-symmetric approach indeed neglects
the radial current density component, mainly resulting in a poor estimation of the arc
velocity. Various boundary conditions were set on the anode and cathode. These
conditions, difficult to measure and to estimate a priori, significantly affect the plasma
heat source simulation results. Solution of the temperature and electromagnetic fields
in the electrodes will thus be included in the forthcoming developments.
},

year={2011},

keywords={electric arc welding, electric heat source, thermal plasma, magnetic poten- tial, spatial distribution of thermal energy, TIG, GTAW, WIG.},

}

** RefWorks **

RT Conference Proceedings

SR Electronic

ID 140967

A1 Choquet, Isabelle

A1 Nilsson, Håkan

A1 Sass-Tisovskaya, Margarita

T1 Modeling and simulation of a heat source in electric arc welding

YR 2011

T2 Proceedings from the 4th Swedish Production Symposium, Lund, Sweden

SP 202

OP 211

AB This study focused on the modeling and simulation of a plasma heat source applied to
electric arc welding. The heat source was modeled in three space dimensions coupling
thermal fluid mechanics with electromagnetism. Two approaches were considered for
calculating the magnetic field: i) three-dimensional, and ii) axi-symmetric. The anode
and cathode were treated as boundary conditions. The model was implemented in the
open source CFD software OpenFOAM-1.6.x. The electromagnetic part of the solver
was tested against analytic solution for an infinite electric rod. Perfect agreement was
obtained. The complete solver was tested against experimental measurements for Gas
Tungsten Arc Welding (GTAW) with an axi-symmetric configuration. The shielding gas
was argon with thermodynamic and transport properties covering a temperature range
from 200 to 30 000 K. The numerical solutions then depend greatly on the approach
used for calculating the magnetic field. The axi-symmetric approach indeed neglects
the radial current density component, mainly resulting in a poor estimation of the arc
velocity. Various boundary conditions were set on the anode and cathode. These
conditions, difficult to measure and to estimate a priori, significantly affect the plasma
heat source simulation results. Solution of the temperature and electromagnetic fields
in the electrodes will thus be included in the forthcoming developments.

LA eng

LK http://publications.lib.chalmers.se/records/fulltext/local_140967.pdf

OL 30