Heat Transfer Mode and Effect of Fluid Flow on the Morphology of the Weld Pool

Abdel Halim Zitouni; Pierre Spitéri; Mouloud Aissani; Younes Benkheda

doi:10.4028/www.scientific.net/DDF.406.66

Paper Titles

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Conjugate Heat and Mass Transfer on Steady MHD Mixed Convection Flow along a Vertical Slender Hollow Cylinder with Heat Generation and Chemical Reaction Effects
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Prandtl and Richardson Number Effects on Mixed Convection in a Vented Enclosure on Application to the Cooling of the Fins
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Heat and Mass Transfer in an Inclined Bi-L-Shaped Layered Porous Media: Effect of Buoyancy Ration
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Numerical Study in Three Dimensions of Influence of the Fluids Nature and Obstacle Position on the Electronic Component Cooling
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Heat Transfer Mode and Effect of Fluid Flow on the Morphology of the Weld Pool

Abstract:

In this work, the heat transfer by conduction and convection mode and effect of fluid flow on the morphology of the weld pool and the welding properties is investigated during Tungsten Inert Gas (TIG) process. In the first part, a computation code under Fortran was elaborated to solve the equations resulting from the finite difference discretization of the heat equation, taking into account the liquid-solid phase change with the associated boundary conditions. In order to calculate the velocity field during welding, the Navier-Stokes equations in the melt zone were simplified and solved considering their stream-vorticity formulation. A mathematical model was developed to study the effect of the melted liquid movement on the weld pool. The evolution of the fraction volume of the liquid and the thermal fields promoted the determination of the molten zone (MZ) and the Heat Affected Zone (HAT) dimensions, which seems to be in good agreement with literature.

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Periodical:

Defect and Diffusion Forum (Volume 406)

Pages:

66-77

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.406.66

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Online since:

January 2021

Authors:

Abdel Halim Zitouni*, Pierre Spitéri, Mouloud Aissani, Younes Benkheda

Keywords:

Heat Affected Zone, Molten Zone, Thermal and Flow Modeling, TIG Welding

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