Simulating fast electron beam melting with a parallel thermal free surface lattice Boltzmann method
Author(s): Ammer R, Ljungblad U, Markl M, Körner C, Rüde U
Publication year: 2014
Journal issue: 2
Pages range: 318-330
This paper introduces a three dimensional (3D) thermal lattice Boltzmann method for the simulation of electron beam melting processes. The multi-distribution approach incorporates a state-of-the-art volume of fluid free surface method to handle the complex interaction between gas, liquid, and solid phases. The paper provides a detailed explanation of the modeling of the electron beam gun properties, such as the absorption rate and the energy dissipation. Additionally, an algorithm for the construction of a realistic powder bed is discussed. Special emphasis is placed to a parallel, optimized implementation due to the high computational costs of 3D simulations. Finally, a thorough validation of the heat equation and the solid-liquid phase transition demonstrates the capability of the approach to considerably improve the electron beam melting process. © 2013 Elsevier Ltd. All rights reserved.
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APA: Ammer, R., Ljungblad, U., Markl, M., Körner, C., & Rüde, U. (2014). Simulating fast electron beam melting with a parallel thermal free surface lattice Boltzmann method. Computers & Mathematics With Applications, 67(2), 318-330. https://dx.doi.org/10.1016/j.camwa.2013.10.001
MLA: Ammer, Regina, et al. "Simulating fast electron beam melting with a parallel thermal free surface lattice Boltzmann method." Computers & Mathematics With Applications 67.2 (2014): 318-330.