HYBRID LATTICE BOLTZMANN METHOD FOR THE SIMULATION OF BLENDING PROCESS IN STATIC MIXERS

A lattice Boltzmann method is proposed to simulate the blending of two fluids in static, laminar mixers. The method uses a mesh-based algorithm to solve for the fluid flow, and a meshless technique to trace the interface between the blended fluids. This hybrid approach is highly accurate, because th...

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Published inInternational journal of modern physics. C, Computational physics, physical computation Vol. 24; no. 12; p. 1340009
Main Authors LATT, JONAS, KONTAXAKIS, DIMITRIOS, CHATAGNY, LAURENT, MUGGLI, FELIX, CHOPARD, BASTIEN
Format Journal Article
LanguageEnglish
Published Singapore World Scientific Publishing Company 01.12.2013
World Scientific Publishing Co. Pte., Ltd
Subjects
Blending
Computational fluid dynamics
Computer simulation
Finite element method
Fluid flow
Laminar mixing
Mathematical models
Meshless methods
Mixers
Striations
static fluid mixer
particle-based method
Lattice Boltzmann method
SMX
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ISSN0129-1831
1793-6586
DOI10.1142/S0129183113400093

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Summary:A lattice Boltzmann method is proposed to simulate the blending of two fluids in static, laminar mixers. The method uses a mesh-based algorithm to solve for the fluid flow, and a meshless technique to trace the interface between the blended fluids. This hybrid approach is highly accurate, because the position of the interface can be traced beyond the resolution of the grid. The numerical diffusion is negligible in this model, and it is possible to reproduce mixing patterns that contain more than one hundred striations with high fidelity. The implementation of this method in the massively parallel library Palabos is presented, and simulation results are compared with experimental data to emphasize the accuracy of the results.
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ISSN:0129-1831
1793-6586
DOI:10.1142/S0129183113400093