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Title: Extension of Lattice Boltzmann Flux Solver for Simulation of Compressible Multicomponent Flows
Authors: Liming Yang 
Chang Shu 
Wen-Ming Yang 
Yan Wang 
Keywords: bubble explosion under water
Compressible multi-component flows
lattice Boltzmann flux solver
stiffened gas equation of state
Issue Date: 2018
Citation: Liming Yang, Chang Shu, Wen-Ming Yang, Yan Wang (2018). Extension of Lattice Boltzmann Flux Solver for Simulation of Compressible Multicomponent Flows. Modern Physics Letters B 32 : 1840001. ScholarBank@NUS Repository.
Abstract: The lattice Boltzmann flux solver (LBFS), which was presented by Shu and his coworkers for solving compressible fluid flow problems, is extended to simulate compressible multi-component flows in this work. To solve the two-phase gas-liquid problems, the model equations with stiffened gas equation of state are adopted. In this model, two additional non-conservative equations are introduced to represent the material interfaces, apart from the classical Euler equations. We first convert the interface equations into the full conservative form by applying the mass equation. After that, we calculate the numerical fluxes of the classical Euler equations by the existing LBFS and the numerical fluxes of the interface equations by the passive scalar approach. Once all the numerical fluxes at the cell interface are obtained, the conservative variables at cell centers can be updated by marching the equations in time and the material interfaces can be identified via the distributions of the additional variables. The numerical accuracy and stability of present scheme are validated by its application to several compressible multi-component fluid flow problems. © 2018 World Scientific Publishing Company.
Source Title: Modern Physics Letters B
ISSN: 0217-9849
DOI: 10.1142/S0217984918400018
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