Rheology of dense suspensions of ideally conductive particles in an electric field

Rheology of dense suspensions of ideally conductive particles in an electric field
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电场中理想导电颗粒的致密悬浮液的流变学

DOI:
10.1017/jfm.2023.980
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发表时间:
2023
影响因子:
3.7
通讯作者:
Park, Jae Sung
Park, Jae Sung
中科院分区:
工程技术2区
文献类型:
--
作者:
Mirfendereski, Siamak;Park, Jae Sung

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采用大规模数值模拟的方法研究了理想导电颗粒稠密悬浮液在电场和剪切流作用下的流变行为。在电场的作用下,这些粒子会发生双极电泳(DIP),这是两种非线性电动力学现象的结合:诱导电荷电泳(ICEP)和介电电泳(DEP)。对于理想导电粒子,ICEP优于DEP,导致瞬态配对动力学。剪切粘度和一、二次法向应力的差异与悬架的微观结构和动力学有关。最后,我们的研究结果揭示了非线性电动力学作为这种悬浮液的主动流变控制手段的潜在用途。
The rheological behaviour of dense suspensions of ideally conductive particles in the presence of both electric field and shear flow is studied using large-scale numerical simulations. Under the action of an electric field, these particles are known to undergo dipolophoresis (DIP), which is the combination of two nonlinear electrokinetic phenomena: induced-charge electrophoresis (ICEP) and dielectrophoresis (DEP). For ideally conductive particles, ICEP is predominant over DEP, resulting in transient pairing dynamics. The shear viscosity and first and second normal stress differences in connection to suspension microstructure and dynamics. Lastly, our findings reveal the potential use of nonlinear electrokinetics as a means of active rheology control for such suspensions.
理想极化球体浓缩悬浮液中的介电电泳
DOI: --
发表时间: 2019
影响因子: 3.7
作者:
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