Simulating fast electron beam melting with a parallel thermal free surface lattice Boltzmann method

被引：110

作者：

Ammer, Regina ^{[1
]}

Markl, Matthias ^{[2
]}

Ljungblad, Ulric ^{[3
]}

Koerner, Carolin ^{[2
]}

Ruede, Ulrich ^{[1
]}

机构：

[1] Chair Syst Simulat, D-91058 Erlangen, Germany

[2] Chair Met Sci & Technol, D-91058 Erlangen, Germany

[3] Arcam AB, S-43137 Molndal, Sweden

来源：

COMPUTERS & MATHEMATICS WITH APPLICATIONS | 2014年 / 67卷 / 02期

关键词：

Thermal lattice Boltzmann method; Electron beam melting process; Free surface; Parallel computing; MODEL; FLOW; STABILIZATION; EQUATION;

D O I：

10.1016/j.camwa.2013.10.001

中图分类号：

O29 [应用数学];

学科分类号：

070104 [应用数学];

摘要：

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.

引用

页码：318 / 330

页数：13

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