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Extended BGK Boltzmann for Dense Gases

Published online by Cambridge University Press:  03 June 2015

Saikishan Suryanarayanan,
Shiwani Singh and
Santosh Ansumali
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Abstract

An alternate BGK type formulation of the Enskog equation has been recently proposed. It was shown that the new model has a valid H-theorem and correct thermal conductivity. We propose Lattice Boltzmann (LB) formulation of this new Enskog-BGK model. The molecular nature of the model is verified in case of shear flow by comparing the predicted normal stress behavior by the current model with the prediction of molecular dynamics simulations. We extend the model for multiphase flow by incorporating attractive part as Vlasov type force. To validate multiphase formulation, the results of 3D simulations of a condensing bubble in a periodic box are presented.

Keywords

76T1082C40Lattice Boltzmann methodmultiphase flowEnskog equation

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Type
Research Article
Information
Communications in Computational Physics , Volume 13 , Issue 3 , March 2013, pp. 629 - 648
Copyright
Copyright © Global Science Press Limited 2013

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