Date of this Version
Physical Review Letters
The mean-square displacement 〈Δr2(τ)〉 of particles in concentrated suspensions is measured at times sufficiently short to observe the transient nature of hydrodynamic interactions. For all volume fractions φ, the velocity autocorrelation function decays as a power law R(τ)∼τ−3/2. A remarkable scaling with φ is observed for the time-dependent self-diffusion coefficient Ds(τ)=〈Δr2(τ)〉/6τ: If Ds(τ) is scaled by its asymptotic value and if time is scaled by a viscous time inversely proportional to the shear viscosity of the suspension, all the data fall onto a single master curve.
© 1991 American Physical Society. You van view the original article at: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.68.2559
Zhu, J. X., Durian, D. J., Weitz, D. A., & Pine, D. J. (1992). Scaling of Transient Hydrodynamic Interactions in Concentrated Suspensions. Physical Review Letters, 68 (16), 2559-2562. http://dx.doi.org/10.1103/PhysRevLett.68.2559
Date Posted:10 October 2017
This document has been peer reviewed.