Intrinsic viscosities of non-spherical colloids by Brownian dynamics simulations

Duraivelan  Palanisamy; W.K. den Otter

doi:10.1063/1.5127001

Intrinsic viscosities of non-spherical colloids by Brownian dynamics simulations

Duraivelan Palanisamy, W.K. den Otter^*

^*Corresponding author for this work

Multi Scale Mechanics

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Abstract

A numerical study is presented on the intrinsic viscosities of sheared dilute suspensions of nonspherical Brownian colloidal particles. The simulations confirm theoretical predictions on the intrinsic viscosities of highly oblate and highly prolate spheroids in the limits of weak and strong Brownian noise (i.e., for low and high Péclet numbers). Numerical data and fit functions are provided covering the entire shear-thinning regime, for spheroids ranging from highly oblate to highly prolate. The tumbling motion and intrinsic viscosities of a hemispherical cap and a helix are briefly discussed.

Original language	English
Article number	184902
Number of pages	12
Journal	The Journal of chemical physics
Volume	151
Issue number	18
Early online date	14 Nov 2019
DOIs	https://doi.org/10.1063/1.5127001
Publication status	Published - 14 Nov 2019

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abstract = "A numerical study is presented on the intrinsic viscosities of sheared dilute suspensions of nonspherical Brownian colloidal particles. The simulations confirm theoretical predictions on the intrinsic viscosities of highly oblate and highly prolate spheroids in the limits of weak and strong Brownian noise (i.e., for low and high P{\'e}clet numbers). Numerical data and fit functions are provided covering the entire shear-thinning regime, for spheroids ranging from highly oblate to highly prolate. The tumbling motion and intrinsic viscosities of a hemispherical cap and a helix are briefly discussed.",

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AB - A numerical study is presented on the intrinsic viscosities of sheared dilute suspensions of nonspherical Brownian colloidal particles. The simulations confirm theoretical predictions on the intrinsic viscosities of highly oblate and highly prolate spheroids in the limits of weak and strong Brownian noise (i.e., for low and high Péclet numbers). Numerical data and fit functions are provided covering the entire shear-thinning regime, for spheroids ranging from highly oblate to highly prolate. The tumbling motion and intrinsic viscosities of a hemispherical cap and a helix are briefly discussed.

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Intrinsic viscosities of non-spherical colloids by Brownian dynamics simulations

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