A numerical model for the simulation of shallow laser surface melting

Caboussat, Alexandre (Haute école de gestion de Genève, HES-SO // Haute Ecole Spécialisée de Suisse Occidentale) ; Hess, Julien (Haute école de gestion de Genève, HES-SO // Haute Ecole Spécialisée de Suisse Occidentale ; Ycoor System SA, Sierre, Switzerland) ; Masserey, Alexandre (Ycoor System SA, Sierre, Switzerland) ; Picasso, Marco (Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland)

We present a multi-physics model for the approximation of the coupled system formed by the temperature-dependent Navier-Stokes equations with free surfaces. The main application is the industrial process of shallow laser surface melting (SLSM), for laser polishing of metal surfaces. We consider incompressible flow equations with solidification, and we model the laser source through physically-consistent boundary conditions. We incorporate Marangoni effects in the surface tension model to drive internal motion in the liquid metal. The numerical method relies on an operator splitting strategy and a two-grid approach. A proof of concept of the numerical model is achieved through a static laser melting process.


Keywords:
Conference Type:
full paper
Faculty:
Economie et Services
School:
HEG - Genève
Institute:
CRAG - Centre de Recherche Appliquée en Gestion
Subject(s):
Economie/gestion
Publisher:
Pavia, Italy, 11-13 September 2019
Date:
2019-09
Pavia, Italy
11-13 September 2019
Pagination:
Pp. 286-296
Published in:
Proceedings of the II International Conference on Simulation for Additive Manufacturing Sim-AM 2019
ISBN:
978-84-949194-8-0
External resources:
Appears in Collection:



 Record created 2019-09-19, last modified 2019-09-30

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