@inproceedings{4e541694ea014cae856660da3ada5f2c,
title = "A study on molten pool flow for various welding positions of V-groove GMA pipe welding",
abstract = "Previous simulations of Gas Metal Arc (GMA) Vgroove welding assumed that the shape of the arc is axissymmetric, which is not always correct. In this study, however, the elliptic arc heat flux model was adopted to conduct 3D numerical simulations by applying Abel inversion to the arc images captured with a CCD camera. Heat transfer and fluid flow in the weld pool were analyzed to examine the temperature distribution, flow velocity fields and the solidified weld bead geometry during GMA V-groove welding of pipes. The model solved the equations of conservation of mass, momentum and energy with the VOF (Volume of Fluid) method which was adopted to calculate the shape of free surfaces. For various welding positions, different molten pool flows and bead shapes caused mainly by the different gravity force directions in the numerical simulations were compared with data from experiments, and showed a good agreement.",
keywords = "Abel inversion, Elliptic arc heat flux, Numerical simulation, Pipe welding, Vgroove",
author = "Cho, \{D. W.\} and Na, \{S. J.\} and Cho, \{M. H.\} and Lee, \{M. Y.\}",
year = "2010",
language = "英语",
isbn = "9786056141911",
series = "Proc. of the Int. Conf. on Advances in Welding Science and Technology for Construction, Energy and Transportation, AWST 2010, held in Conj. with the 63rd Annual Assembly of IIW 2010",
pages = "615--618",
booktitle = "Proc. of the Int. Conf. on Advances in Welding Science and Technology for Construction, Energy and Transportation, AWST 2010, held in Conj. with the 63rd Annual Assembly of IIW 2010",
note = "International Conference on Advances in Welding Science and Technology for Construction, Energy and Transportation, AWST 2010, held in Conjunction with the 63rd Annual Assembly of the International Institute of Welding, IIW 2010 ; Conference date: 11-07-2010 Through 17-07-2010",
}