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arXiv · 1607.03285

Size consistency in Smoothed Dissipative Particle Dynamics

G. Faure·J. Roussel·J. -B. Maillet·G. Stoltz
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Abstract

Smoothed Dissipative Particle Dynamics (SDPD) is a mesoscopic method which allows to select the level of resolution at which a fluid is simulated. In this work, we study the consistency of the resulting thermodynamic properties as a function of the size of the mesoparticles, both at equilibrium and out of equilibrium. We also propose a reformulation of the SDPD equations in terms of energy variables. This increases the similarities with Dissipative Particle Dynamics with Energy conservation and opens the way for a coupling between the two methods. Finally, we present a numerical scheme for SDPD that ensures the conservation of the invariants of the dynamics. Numerical simulations illustrate this approach.

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G. Faure, J. Roussel, J. -B. Maillet, G. Stoltz. 2016-07-12. Size consistency in Smoothed Dissipative Particle Dynamics. https://doi.org/10.1103/physreve.94.043305

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