TY - JOUR
T1 - A mathematical model of gas tungsten arc welding considering the cathode and the free surface of the weld pool
AU - Kim, W. H.
AU - Fan, H. G.
AU - Na, S. J.
PY - 1997
Y1 - 1997
N2 - A two-dimensional axisymmetric numerical model, including the influence of the cathode and the free surface of the weld pool, is developed.to describe the heat transfer and fluid flow in gas tungsten arc (GTA) welding. In the model, a boundary-fitted coordinate system is adopted to precisely describe the cathode shape and deformed weld-pool surface. The current continuity equation has been solved with the combined arc plasma-cathode system, independent of the assumption of current density distribution on the cathode surface, which was essential in the previous studies of arc plasma. It has been shown that the temperature profile, the current, and the heat flux to the anode show good agreement with the experimental data. Moreover, the current and the heat-flux distributions may be affected by the shape of the cathode and the free surface of the weld pool.
AB - A two-dimensional axisymmetric numerical model, including the influence of the cathode and the free surface of the weld pool, is developed.to describe the heat transfer and fluid flow in gas tungsten arc (GTA) welding. In the model, a boundary-fitted coordinate system is adopted to precisely describe the cathode shape and deformed weld-pool surface. The current continuity equation has been solved with the combined arc plasma-cathode system, independent of the assumption of current density distribution on the cathode surface, which was essential in the previous studies of arc plasma. It has been shown that the temperature profile, the current, and the heat flux to the anode show good agreement with the experimental data. Moreover, the current and the heat-flux distributions may be affected by the shape of the cathode and the free surface of the weld pool.
UR - https://www.scopus.com/pages/publications/0031212570
U2 - 10.1007/s11663-997-0042-2
DO - 10.1007/s11663-997-0042-2
M3 - 文章
AN - SCOPUS:0031212570
SN - 1073-5615
VL - 28
SP - 679
EP - 686
JO - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
JF - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
IS - 4
ER -