Size consistency in smoothed dissipative particle dynamics

作者：Faure Gerome^*; Maillet Jean Bernard; Roussel Julien; Stoltz Gabriel

来源：Physical Review E, 2016, 94(4): 043305.

DOI：10.1103/PhysRevE.94.043305

Smoothed dissipative particle dynamics (SDPD) is a mesoscopic method that allows one 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.

• 出版日期2016-10-13
• 单位中国地震局; INRIA