Experimental and numerical studies on three dimensional GTA weld pool convection: Non-axisymmetric effects
Conference
·
OSTI ID:435665
- Univ. of Maryland, College Park, MD (United States). Dept. of Mechanical Engineering
- Columbia Univ., New York, NY (United States). Dept. of Mechanical Engineering
- Naval Postgraduate School, Monterey, CA (United States). Dept. of Mechanical Engineering
Observations of surface flow patterns of steel and aluminum GTAW pools have been made using a pulsed laser visualization system. The weld pool convection is found to be three dimensional, with the azimuthal circulation depending on the location of the clamp with respect to the torch. Oscillation of steel pools and undulating motion in aluminum weld pools are also observed even with steady process parameters. Current axisymmetric numerical models are unable to explain such phenomena. A three dimensional computational study is carried out in this study to explain the rotational flow in aluminum weld pools.
- Sponsoring Organization:
- National Science Foundation, Washington, DC (United States)
- OSTI ID:
- 435665
- Report Number(s):
- CONF-951135-; ISBN 0-7918-1751-2; TRN: IM9710%%323
- Resource Relation:
- Conference: 1995 International mechanical engineering congress and exhibition, San Francisco, CA (United States), 12-17 Nov 1995; Other Information: PBD: 1995; Related Information: Is Part Of Proceedings of the ASME Heat Transfer Division. Volume 2: Fire and combustion systems; Thermal-hydraulics in nuclear and hazardous waste processing and disposal; Transport phenomena in materials processing; HTD-Volume 317-2; Atreya, A. [ed.] [Univ. of Michigan, Ann Arbor, MI (United States)]; Gritzo, L. [ed.] [Sandia National Labs., Albuquerque, NM (United States)]; Saltiel, C. [ed.] [SCRAM Technology, Inc., Gainesville, FL (United States)] [and others]; PB: 592 p.
- Country of Publication:
- United States
- Language:
- English
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