Nonaxisymmetric convection in stationary Gas Tungsten Arc Weld Pools

Joshi, Y and Dutta, P and Schupp, PE and Espinosa, D (1997) Nonaxisymmetric convection in stationary Gas Tungsten Arc Weld Pools. In: Journal of Heat Transfer, 119 (1). pp. 164-172.

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Abstract

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.

Item Type:	Journal Article
Publication:	Journal of Heat Transfer
Publisher:	The American Society of Mechanical Engineers
Additional Information:	Copyright of this article belongs to The American Society of Mechanical Engineers.
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	04 Aug 2011 06:22
Last Modified:	04 Aug 2011 06:22
URI:	http://eprints.iisc.ac.in/id/eprint/38320

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