Unsteady Numerical Modeling of GTA Welding with Moving Fusion Weld pool / Plasma Coupling Interface
| Autor: | Yau, Xavier |
|---|---|
| Přispěvatelé: | EDF R&D (EDF R&D), EDF (EDF), EDF R&D (département Management des Risques Industriels), Aix Marseille Université (AMU), Marc Médale, Damien Borel, Kateryna Dorogan, Yau, Xavier |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
[PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn]
Coupled Model [SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering Plasma Hydrodynamics Mécanique des fluides numérique [SPI.ELEC] Engineering Sciences [physics]/Electromagnetism [PHYS.PHYS.PHYS-COMP-PH] Physics [physics]/Physics [physics]/Computational Physics [physics.comp-ph] [SPI.PLASMA]Engineering Sciences [physics]/Plasmas [SPI.PLASMA] Engineering Sciences [physics]/Plasmas [PHYS.PHYS.PHYS-FLU-DYN] Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn] Computational Fluid Dynamics [PHYS.PHYS.PHYS-COMP-PH]Physics [physics]/Physics [physics]/Computational Physics [physics.comp-ph] [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism Numerical Methods Heat transfer Simulation numérique de soudage [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering Free surface deformation Welding Process |
| Zdroj: | Fluid Dynamics [physics.flu-dyn]. EDF R&D (département Management des Risques Industriels); Aix Marseille Université (AMU), 2018. English |
| Popis: | In order to ensure total safety during maintenance operations within nuclear power plants, it is mandatory to preserve the optimal quality of the internal weld beads. To this end, we use Computational Magnetohydrodynamics to simulate adjacent phenomena within the plasma and the weld pool in order to improve the knowledge of welding operating process. One of the difficulties is to take into account the effects induced by the thermal gradient and the variations of surfactant element concentrations on the weld pool surface known as the Marangoni effect. In order to take into account all the physical phenomena at the plasma/weld pool interface, we use an interface tracking method (Arbitrary Lagrangian-Eulerian) to improve 3D finite volume simulation of weld pool with free surface deformation. Subsequently, it enables to capture more precisely the interfacial forces such as the Marangoni effect, the arc pressure and the gravity, and improve vertical/cornice welding simulation. Thus, this work is part of the development of a tridimensional un- steady two-way coupling in order to overcome the Gaussian boundary condition used to model the heat transfer from plasma torch towards the work piece surface. Ultimately, we could obtain a unified model for an optimal welding process simulation.; In order to ensure total safety during maintenance operations within nuclear power plants, it is mandatory to preserve the optimal quality of the internal weld beads. To this end, we use Computational Magnetohydrodynamics to simulate adjacent phenomena within the plasma and the weld pool in order to improve the knowledge of welding operating process. One of the difficulties is to take into account the effects induced by the thermal gradient and the variations of surfactant element concentrations on the weld pool surface known as the Marangoni effect. In order to take into account all the physical phenomena at the plasma/weld pool interface, we use an interface tracking method (Arbitrary Lagrangian-Eulerian) to improve 3D finite volume simulation of weld pool with free surface deformation. Subsequently, it enables to capture more precisely the interfacial forces such as the Marangoni effect, the arc pressure and the gravity, and improve vertical/cornice welding simulation. Thus, this work is part of the development of a tridimensional un- steady two-way coupling in order to overcome the Gaussian boundary condition used to model the heat transfer from plasma torch towards the work piece surface. Ultimately, we could obtain a unified model for an optimal welding process simulation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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