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Scaling analysis of momentum and heat transport in gas tungsten arc weld pools

Chakraborty, S and Sarkar, S and Dutta, P (2002) Scaling analysis of momentum and heat transport in gas tungsten arc weld pools. In: Science and Technology of Welding & Joining, 7 (2). 88-94 .

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Official URL: http://www.ingentaconnect.com/content/maney/stwj/2...

Abstract

A systematic procedure is outlined for scaling analysis of momentum and heat transfer in gas tungsten arc weld pools. With suitable selections of non-dimentionalised parameters, the governing equations coupled with appropriate boundary conditions are first scaled, and the relative significance of various terms appearing in them is analysed accordingly. The analysis is then used to predict the orders of magnitude of some important quantities, such as the velocity scene lit the top surface, velocity boundary layer thickness, maximum temperature increase in the pool, and time required for initiation of melting. Some of the quantities predicted from the scaling analysis can also be used for optimised selection of appropriate grid size and time steps for full numerical simulation of the process. The scaling predictions are finally assessed by comparison with numerical results quoted in the literature, and a good qualitative agreement is observed.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Maney Publishing.
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 28 Jul 2011 07:49
Last Modified: 28 Jul 2011 07:49
URI: http://eprints.iisc.ernet.in/id/eprint/39388

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