Numerical simulation on interaction between TIG welding arc and weld pool

Numerical investigation of weld pool behaviors and ripple formation for a moving GTA welding under pulsed currents

“…Fan et al [14] numerically analyzed fluid flow driven by a combination of electromagnetic force, buoyancy force, arc drag force, and surface tension gradient for a partially or fully penetrated weld pool in a stationary GTAW. Lu et al [15,16] simulated the behavior of weld pool and welding arc in GTAW including fluid flow and heat transfer by using ANSYS, in which the effects of a few forces on weld pool shape and the interaction between welding arc and weld pool were studied. Wu and Gao [17] developed the correlation of the heat flux on the anode surface with the plasma properties at the free-fall edge, and it was found the energy carried by the electrons constituted most of the heat on the anode surface.…”

“…Many researchers studied the weld pool dynamics and weld bead formation with experimental [8][9][10][11][12] or numerical [13][14][15][16][17][18][19][20][21][22][23][24] methods. However, it is rather difficult to experimentally measure the parameters such as temperature and velocity due to the nontransparency of base metal and the high-temperature arc plasma.…”

A Multiphysics Simulation Approach for Efficient Modeling of Lightning Strike Tests on Aircraft Structures

“…Herein the lightning strike electric arc model is based on the preceding Gas Tungsten Arc (GTA) models available in the literature [19][20][21][22][23][24][25][26][27][28][29]. In general the preceding plasma modelling has assumed the thermal plasma to be in local thermodynamic equilibrium.…”

Numerical simulation of temperature and fluid in GTAW-arc under changing process conditions

“…All of these properties of Ar, He and CO 2 are obtained from reference of Lancaster (1984). As functions of temperature, , , c p and k are obtained from statistical thermodynamic analysis and calculations in a 1 atm environment (Fenggui et al, 2006). F r and F z present volume forces, i.e.…”