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Modelling the fluid dynamics and coupled phenomena in arc weld pools

Modelling the fluid dynamics and coupled phenomena in arc weld pools

Hughes, Michael, Pericleous, Koulis ORCID: 0000-0002-7426-9999 and Strusevitch, Nadia (2002) Modelling the fluid dynamics and coupled phenomena in arc weld pools. In: Mathematical Modelling of Weld Phenomena. Materials Modelling, 6 . Maney Publishing for the Institute of Materials, Minerals and Mining, London, England, UK, pp. 63-81. ISBN 9781902653563

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Abstract

A 3D model of melt pool created by a moving arc type heat sources has been developed. The model solves the equations of turbulent fluid flow, heat transfer and electromagnetic field to demonstrate the flow behaviour phase-change in the pool. The coupled effects of buoyancy, capillary (Marangoni) and electromagnetic (Lorentz) forces are included within an unstructured finite volume mesh environment. The movement of the welding arc along the workpiece is accomplished via a moving co-ordinator system. Additionally a method enabling movement of the weld pool surface by fluid convection is presented whereby the mesh in the liquid region is allowed to move through a free surface. The surface grid lines move to restore equilibrium at the end of each computational time step and interior grid points then adjust following the solution of a Laplace equation.

Item Type: Conference Proceedings
Title of Proceedings: Mathematical Modelling of Weld Phenomena
Additional Information: [1] This paper was first presented at the Sixth International Seminar on the Numerical Analysis of Weldability, held in October 2001 in Graz, Austria. [2] This paper is published within Section I. Melt Pool, Phenomena, Chapter 4.
Uncontrolled Keywords: welding arc, turbulent fluid flow, heat transfer, electromagnetic field, flow behaviour
Subjects: Q Science > QA Mathematics > QA76 Computer software
T Technology > TJ Mechanical engineering and machinery
Pre-2014 Departments: School of Computing & Mathematical Sciences
School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis
School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis > Computational Mechanics & Reliability Group
School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis > Computational Science & Engineering Group
School of Computing & Mathematical Sciences > Department of Computer Systems Technology
School of Computing & Mathematical Sciences > Department of Mathematical Sciences
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Last Modified: 14 Oct 2016 09:00
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/552

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