EH-DPD: a dissipative particle dynamics approach to electrohydrodynamics

نویسندگان

چکیده

Abstract Electrohydrodynamics is crucial in many nanofluidic and biotechnological applications. In such small scales, the complexity due to coupling of fluid dynamics with ions increased by relevance thermal fluctuations. Here, we present a mesoscale method based on Dissipative Particle Dynamics (DPD) model fluid. Two scalar quantities, corresponding number positive negative carried each DPD particle, are added standard formulation. We introduced general framework that, given definition free-energy allows derive fluctuation-dissipation relation expression for ionic fluxes between particles. This provides link system its equilibrium properties. The then validated simulating planar electroosmotic flow cases overlapping non electric double layers. It shown that using Van der Waals equation state effect finite size can be accounted, leading significant effects concentration velocity profiles respect ideal solution case. Graphic abstract

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ژورنال

عنوان ژورنال: European Physical Journal Plus

سال: 2022

ISSN: ['2190-5444']

DOI: https://doi.org/10.1140/epjp/s13360-022-02770-z