Lattice Boltzmann simulation of phase change and heat transfer characteristics in the multi-layer deposition

• 来源期刊: 应用数学和力学（英文版）
• 年，卷（期）: 2021,（4）
• 页码范围: 553-566
• 页数: 14页
• 分类号: O357
• 语种: 英文

摘要

The metal droplets deposition method (MDDM) is a rapid prototyping technology,implemented via metallurgy bonding within droplets.The anisotropy of heat transfer and re-melting is caused by an asymmetric deposition process.A lattice Boltzmann method (LBM) model is established to predict the heat transfer and phase change in the multi-layer deposition.The prediction model is verified by the experimental temperature profiles in existing literature.The monitoring points are set to compare the temperature profiles,and decoupling analyze the heat transfer mechanism in different positions.The negative relationships between the re-molten volume of the temperature difference,as well as the influence of the dispositive position and the relative position of the adjacent component are observed and analyzed under the heat conduction.This work is helpful to choose the appropriate temperature conditions and the optimal dispositive method.