Heat transfer and fluid flow in a partially or fully penetrated weld pool in gas tungsten arc welding

In this study, fluid flow driven by a combination of electromagnetic force, buoyancy force, are drag force, and surface tension gradient is numerically analyzed for a partially or fully penetrated weld pool in stationary gas tungsten are welding (GTAW). Irregular shape of the weld pool and the moving liquid-solid interface is handled by a boundary-fitted-coordinates technique. Surface tension on the top and the bottom free surfaces of the weld pool is found to play a critical role in determining the flow pattern in the weld pool. The calculated GTA weld bead geometry compares favorably with experimental results. (C) 2000 Elsevier Science Ltd. All rights reserved.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2001-01
Language
ENG
Keywords

FREE-SURFACE; PRESSURE; GTA

Citation

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, v.44, no.2, pp.417 - 428

ISSN
0017-9310
URI
http://hdl.handle.net/10203/2144
Appears in Collection
ME-Journal Papers(저널논문)
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