Intrinsic viscosity of a suspension of cubes

Rajesh K. Mallavajula, Donald L. Koch, Lynden A. Archer

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

We report on the viscosity of a dilute suspension of cube-shaped particles. Irrespective of the particle size, size distribution, and surface chemistry, we find empirically that cubes manifest an intrinsic viscosity [η]=3.1±0.2, which is substantially higher than the well-known value for spheres, [η]=2.5. The orientation-dependent intrinsic viscosity of cubic particles is determined theoretically using a finite-element solution of the Stokes equations. For isotropically oriented cubes, these calculations show [η]=3.1, in excellent agreement with our experimental observations. © 2013 American Physical Society.
Original languageEnglish (US)
JournalPhysical Review E
Volume88
Issue number5
DOIs
StatePublished - Nov 6 2013
Externally publishedYes

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