Multiphysics simulation of single pulse laser powder bed fusion: comparison of front capturing and front tracking methods
| Autor: | Clara Moriconi, Michel Bellet, Patrice Peyre, Alexis Queva, Gildas Guillemot, Morgan Dal, Yaasin A. Mayi, Charlotte Metton |
|---|---|
| Přispěvatelé: | Centre de Mise en Forme des Matériaux (CEMEF), MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Fusion Materials science Applied Mathematics Mechanical Engineering Acoustics Multiphysics Single pulse 02 engineering and technology 021001 nanoscience & nanotechnology Laser Tracking (particle physics) [INFO.INFO-MO]Computer Science [cs]/Modeling and Simulation 01 natural sciences Finite element method [SPI.MAT]Engineering Sciences [physics]/Materials Computer Science Applications law.invention Mechanics of Materials law 0103 physical sciences Powder bed 0210 nano-technology Front (military) |
| Zdroj: | International Journal of Numerical Methods for Heat and Fluid Flow International Journal of Numerical Methods for Heat and Fluid Flow, Emerald, 2021, ahead-of-print (ahead-of-print), ⟨10.1108/HFF-04-2021-0282⟩ |
| ISSN: | 0961-5539 |
| DOI: | 10.1108/hff-04-2021-0282 |
| Popis: | Purpose During thermal laser processes, heat transfer and fluid flow in the melt pool are primary driven by complex physical phenomena that take place at liquid/vapor interface. Hence, the choice and setting of front description methods must be done carefully. Therefore, the purpose of this paper is to investigate to what extent front description methods may bias physical representativeness of numerical models of laser powder bed fusion (LPBF) process at melt pool scale. Design/methodology/approach Two multiphysical LPBF models are confronted: a Level-Set (LS) front capturing model based on a C++ code and a front tracking model, developed with COMSOL Multiphysics® and based on Arbitrary Lagrangian–Eulerian (ALE) method. To do so, two minimal test cases of increasing complexity are defined. They are simplified to the largest degree, but they integrate multiphysics phenomena that are still relevant to LPBF process. Findings LS and ALE methods provide very similar descriptions of thermo-hydrodynamic phenomena that occur during LPBF, providing LS interface thickness is correctly calibrated and laser heat source is implemented with a modified continuum surface force formulation. With these calibrations, thermal predictions are identical. However, the velocity field in the LS model is systematically underestimated compared to the ALE approach, but the consequences on the predicted melt pool dimensions are minor. Originality/value This study fulfils the need for comprehensive methodology bases for modeling and calibrating multiphysical models of LPBF at melt pool scale. This paper also provides with reference data that may be used by any researcher willing to verify their own numerical method. |
| Databáze: | OpenAIRE |
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