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http://dx.doi.org/10.3795/KSME-B.2016.40.6.347

A Momentum-Exchange/Fictitious Domain-Lattice Boltzmann Method for Solving Particle Suspensions  

Jeon, Seok Yun (Dept. of Mechanical Engineering, Hanyang Univ.)
Yoon, Joon Yong (Dept. of Mechanical Engineering, Hanyang Univ.)
Kim, Chul Kyu (Korea Institute of Civil Engineering and Building Technology)
Shin, Myung Seob (Advanced Transportation Examination Division, Korea Intellectual Property Office(KIPO))
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.40, no.6, 2016 , pp. 347-355 More about this Journal
Abstract
This study presents a Lattice Boltzmann Method (LBM) coupled with a momentum-exchange approach/fictitious domain (MEA/FD) method for the simulation of particle suspensions. The method combines the advantages of the LB and the FD methods by using two unrelated meshes, namely, a Eulerian mesh for the flow domain and a Lagrangian mesh for the solid domain. The rigid body conditions are enforced by the momentum-exchange scheme in which the desired value of velocity is imposed directly in the particle inner domain by introducing a pseudo body force to satisfy the constraint of rigid body motion, which is the key idea of a fictitious domain (FD) method. The LB-MEA/FD method has been validated by simulating two different cases, and the results have been compared with those through other methods. The numerical evidence illustrated the capability and robustness of the present method for simulating particle suspensions.
Keywords
Lattice Boltzmann Method; Fluid-Particle Interaction; Momentum Exchange Model; Particle Sedimentation;
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