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Updated: Jun 23, 2026

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
Published on: December 4, 2017
Corrected momentum exchange method for lattice Boltzmann simulations of suspension flow
Eric Lorenz1, Alfonso Caiazzo, Alfons G Hoekstra
1University of Amsterdam, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands. E.Lorenz@uva.nl
Abstract:
Standard methods for lattice Boltzmann simulations of suspended particles, based on the momentum exchange algorithm, might lack accuracy or violate Galilean invariance in some particular situations. Aiming at simulations of dense suspensions in high-shear flows, we motivate and investigate necessary correction terms. We propose an approach which, combining accurate treatments of fluid-structure interaction and moving boundaries, is able to preserve Galilean invariance in relevant orders and to improve the physical behavior of the system. We validate the approach in a comparison with standard methods in simple test problems.
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