Comment on "Brownian motion of droplets induced by thermal noise".

IF 2.4 3区物理与天体物理 Q2 PHYSICS, FLUIDS & PLASMAS

Physical Review E Pub Date : 2025-05-01 DOI:10.1103/PhysRevE.111.056201

J B Bell, A Nonaka, A L Garcia

引用次数: 0

Abstract

We simulate phase separated fluids using the Cahn-Hillard fluctuating hydrodynamic (CH-FHD) model and measure the statistical properties of capillary waves generated by thermal fluctuations. Our measurements are in good agreement with stochastic lubrication theory and molecular dynamics simulations but differ significantly from recent CH-FHD results by Zhang et al. [Phys. Rev. E 109, 024208 (2024)2470-004510.1103/PhysRevE.109.024208]. Specifically, we find that capillary wave statistics at thermodynamic equilibrium are independent of transport properties, namely viscosity and species diffusion.

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对“热噪声引起的液滴布朗运动”的评析。

采用Cahn-Hillard波动流体力学（CH-FHD）模型模拟相分离流体，测量了热波动产生的毛细波的统计特性。我们的测量结果与随机润滑理论和分子动力学模拟非常吻合，但与Zhang等人最近的CH-FHD结果有很大不同。Rev. 109, 024208 (2024)2470-004510.1103/PhysRevE.109.024208]。具体来说，我们发现热力学平衡时的毛细波统计量与输运性质（即粘度和物质扩散）无关。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physical Review E PHYSICS, FLUIDS & PLASMASPHYSICS, MATHEMAT-PHYSICS, MATHEMATICAL

CiteScore

4.50

自引率

16.70%

发文量

2110

期刊介绍： Physical Review E (PRE), broad and interdisciplinary in scope, focuses on collective phenomena of many-body systems, with statistical physics and nonlinear dynamics as the central themes of the journal. Physical Review E publishes recent developments in biological and soft matter physics including granular materials, colloids, complex fluids, liquid crystals, and polymers. The journal covers fluid dynamics and plasma physics and includes sections on computational and interdisciplinary physics, for example, complex networks.