The European Physical Journal E ( IF 1.8 ) Pub Date : 2022-04-25 , DOI: 10.1140/epje/s10189-022-00192-4 Ivan Cherepanov 1 , Boris Smorodin 2
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Abstract
Two-dimensional oscillatory flows in the convective cell filled with a colloidal suspension are investigated. We consider transient and permanent evolution scenarios of the traveling wave that were found in experimental investigation (Donzelli et al. in Phys Rev Lett 102:104503, 2009). The nanoparticle transport mechanisms (thermodiffusion and gravity settling) are analyzed and elucidated with the help of finite-difference numerical simulations for Hyflon MFA colloidal suspension. The spatiotemporal characteristics of the stable (permanent) traveling waves are determined. The dependence of the Rayleigh number on the Lewis number at the boundary of existence of the stable traveling wave is obtained.
Graphic abstract
中文翻译：
封闭细胞中胶体悬浮液的行波
摘要
研究了填充胶体悬浮液的对流池中的二维振荡流。我们考虑在实验研究中发现的行波的瞬态和永久演化场景（Donzelli 等人在 Phys Rev Lett 102:104503, 2009）。借助 Hyflon MFA 胶体悬浮液的有限差分数值模拟，分析和阐明了纳米颗粒传输机制（热扩散和重力沉降）。确定了稳定（永久）行波的时空特性。得到了在稳定行波存在边界处瑞利数与刘易斯数的关系。
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