光滑耗散粒子动力学中的尺寸一致性
Size consistency in Smoothed Dissipative Particle Dynamics
摘要：
光滑耗散粒子动力学（SDPD）是一种介观方法，允许选择模拟流体的分辨率水平。在这项工作中，我们研究的一致性所产生的热力学性质作为一个功能的mesoparticles的大小，无论是在平衡和平衡。我们还提出了一个重新制定的SDPD方程的能量变量。这增加了与具有能量守恒的耗散粒子动力学的相似性，并为两种方法之间的耦合开辟了道路。最后，我们提出了一个数值方案SDPD，确保守恒的动力学不变量。数值模拟说明了这种方法。
英文摘要：
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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