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arXiv 0801.0759cond-mat.stat-mechcond-mat.soft
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非均匀流体的调谐密度分布和迁移率

Tuning density profiles and mobility of inhomogeneous fluids

Gaurav Goel, William P. Krekelberg, Jeffrey R. Errington, Thomas M. Truskett

摘要:

密度剖面是封闭流体中非均匀结构的最常用的测量方法,但人们对它们与输运系数的关系知之甚少。我们通过模拟探索如何调整粒子壁相互作用,以平坦化或增强模型约束流体的粒子分层影响其自扩散率,粘度和熵。有趣的是,消除颗粒分层的相互作用显着降低了受限流体的流动性,而那些增强分层的相互作用可能会产生相反的效果。过量熵有助于理解和预测这些趋势。

英文摘要:

Density profiles are the most common measure of inhomogeneous structure in confined fluids, but their connection to transport coefficients is poorly understood. We explore via simulation how tuning particle-wall interactions to flatten or enhance the particle layering of a model confined fluid impacts its self-diffusivity, viscosity, and entropy. Interestingly, interactions that eliminate particle layering significantly reduce confined fluid mobility, whereas those that enhance layering can have the opposite effect. Excess entropy helps to understand and predict these trends.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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