Chatterjee, Dipankar (2012) A Lattice Boltzmann Model for High-Energy Materials Processing Application. Journal for Multiscale Computational Engineering, 10 (3). pp. 229-247. ISSN 1543–1649

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A three-dimensional lattice Boltzmann (LB) scheme is presented in this article to address the incompressible transport phenomena in the presence of a continuously evolving phase change interface typically encountered in high-energy materials processing applications. The proposed LB scheme utilizes three separate distribution functions to monitor the underlying hydrodynamic, thermal, and compositional fields. Accordingly, the kinematic viscosity, and thermal and mass diffusivities can be adjusted independently, which makes the model suitable for a wide range of phase change problems in high-power materials processing applications. The phase-changing aspects are incorporated into the LB model by inserting appropriate source terms in the respective kinetic equations through the most formal technique—following the extended Boltzmann equations along with an adapted enthalpy updating scheme in association with the classical enthalpy-porosity technique for solid–liquid phase transition problems. The model is used to simulate a conventional high-power laser surface alloying process and excellent agreement with the available experimental results is observed.

Item Type: Article
Subjects: Lattice Boltzmann Modelling
Depositing User: Dr. Sarita Ghosh
Date Deposited: 18 Apr 2016 11:06
Last Modified: 18 Apr 2016 11:06

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