Lattice Boltzmann Models with Mid-Range Interactions


Falcucci, Giacomo and Bella, Gino and Shiatti, Giancarlo and Chibbaro, Sergio and Sbragaglia, Mauro and Succi, Sauro (2007) Lattice Boltzmann Models with Mid-Range Interactions. Communications in computational physics, 2 . pp. 1071-1084. ISSN 1815-2406

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Abstract:An extension of the standard Shan-Chen model for non ideal-fluids, catering for mid-range, soft-core and hard-core repulsion, is investigated. It is shown that the inclusion of such mid-range interactions does not yield any visible enhancement of the density jump across the dense and light phases. Such an enhancement can however be obtained by tuning the exponents of the effective interaction. The results also indicate that the inclusion of soft-core repulsion can prevent the coalescence of neighborhood bubbles, thereby opening the possibility of tailoring the size of multi-droplet configurations, such as sprays and related phase-separating fluids.

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