期刊
COMPUTERS & MATHEMATICS WITH APPLICATIONS
卷 67, 期 2, 页码 318-330出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.camwa.2013.10.001
关键词
Thermal lattice Boltzmann method; Electron beam melting process; Free surface; Parallel computing
资金
- European Union [286695]
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. (C) 2013 Elsevier Ltd. All rights reserved.
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