Hydrodynamic simulations of sedimenting dilute particle suspensions under repulsive DLVO interactions.
Hydrodynamic simulations of sedimenting dilute particle suspensions under repulsive DLVO interactions.
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DLVO 排斥相互作用下沉积稀颗粒悬浮液的流体动力学模拟
DOI:
10.1039/d1sm01294k
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发表时间:
2020
期刊:
影响因子:
3.4
通讯作者:
J. Harting
中科院分区:
文献类型:
--
作者:
D. Jung;M.J. Uttinger;W. Peukert;J. Walter;J. Harting
We present guidelines to estimate the effect of electrostatic repulsion in sedimenting dilute particle suspensions. Our results are based on combined Langevin dynamics and lattice Boltzmann simulations for a range of particle radii, Debye lengths and particle concentrations. They show a simple relationship between the slope K of the concentration-dependent sedimentation velocity and the range χ of the electrostatic repulsion normalized by the average particle–particle distance. When χ → 0, the particles are too far away from each other to interact electrostatically and K = 6.55 as predicted by the theory of Batchelor. As χ increases, K likewise increases as if the particle radius increased in proportion to χ up to a maximum around χ = 0.4. Over the range χ = 0.4–1, K relaxes exponentially to a concentration-dependent constant consistent with known results for ordered particle distributions. Meanwhile the radial distribution function transitions from a disordered gas-like to a liquid-like form. Power law fits to the concentration-dependent sedimentation velocity similarly yield a simple master curve for the exponent as a function of χ, with a step-like transition from 1 to 1/3 centered around χ = 0.6.
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DOI:
--
发表时间:
1954
期刊:
影响因子:
--
作者:
F. Booth
通讯作者:
F. Booth
影响因子:
2.7
作者:
D. Thies;A. Philipse;G. Nägele;B. Mandl;R. Klein
通讯作者:
R. Klein
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
G. Nägele;M. Heinen;A. J. Banchio;C. Contreras
通讯作者:
C. Contreras
影响因子:
8.6
作者:
A. J. Banchio;J. Gapiński;A. Patkowski;W. Häussler;A. Fluerasu;S. Sacanna;P. Holmqvist;G. Meier;M. Lettinga;G. Nägele
通讯作者:
G. Nägele
DOI:
10.1016/j.cpc.2017.03.013
发表时间:
2017-08
期刊:
Comput. Phys. Commun.
影响因子:
--
作者:
Sebastian Schmieschek;L. Shamardin;Stefan Frijters;T. Krüger;U. Schiller;J. Harting;P. Coveney
通讯作者:
Sebastian Schmieschek;L. Shamardin;Stefan Frijters;T. Krüger;U. Schiller;J. Harting;P. Coveney