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Issue 14, 2012
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Mesoscopic simulation of non-ideal fluids with self-tuning of the equation of state

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Abstract

A dynamic optimization strategy is presented to generate customized equations of state (EOS) for the numerical simulation of non-ideal fluids at high density ratio. While stable branches of the analytical EOS are preserved, the spinodal region is self-tuned during the simulation, in order to compensate for numerical errors caused by discretization in phase space. The employed EOS permits the readily setting of the sound speeds for the gas and liquid phases, thus allowing stable simulation with high density (1 : 10 to 1 : 1000) and compressibility ratios (250 : 1–25000 : 1). The present technique is demonstrated for lattice Boltzmann simulation of (free-space) multiphase systems with flat and circular interfaces.

Graphical abstract: Mesoscopic simulation of non-ideal fluids with self-tuning of the equation of state

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Article information


Submitted
18 Jul 2011
Accepted
04 Jan 2012
First published
23 Feb 2012

Soft Matter, 2012,8, 3798-3809
Article type
Paper

Mesoscopic simulation of non-ideal fluids with self-tuning of the equation of state

C. E. Colosqui, G. Falcucci, S. Ubertini and S. Succi, Soft Matter, 2012, 8, 3798
DOI: 10.1039/C2SM06353K

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