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- W2598831223 abstract "In this paper, we present a modified k - epsilon model capable of addressing turbulent weld-pool convection in a GMAW process, taking into account the morphology of the phase change interface during a Gas Metal Arc Welding (GMAW) process. A three-dimensional turbulence mathematical model has been developed to study the heat transfer andfluid flow within the weld pool by considering the combined effect of three driving forces, viz., buoyancy, Lorentz force and surface tension (Marangoni convection). Mass and energy transports by the droplets are considered through the thermal analysis of the electrode. The fallingdroplet's heat addition to the molten pool is considered to be a volumetric heat source distributed in an imaginary cylindrical cavity (cavity model) within the weld pool. This nature of heat source distribution takes into account the momentum and the thermal, energy of the falling droplets. The numerically predicted weld pool dimensionsboth from turbulence and laminar models are then compared with the experimental post-weld results sectioned across the weld axis. The above comparison enables us to analyze the overall effects of turbulent convection on the nature of heat and fluid flow and hence on the weld pool shape/size during the arc welding processes." @default.
- W2598831223 created "2017-04-07" @default.
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- W2598831223 date "2002-04-19" @default.
- W2598831223 modified "2023-09-27" @default.
- W2598831223 title "A k-epsilon model for turbulent weld pool convection in gas metal arc welding process" @default.
- W2598831223 hasPublicationYear "2002" @default.
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