Response to “Comment on ‘The viscoelastic response of Brownian suspensions’?” [J. Chem. Phys. 114, 3339 (2001)]

Response to “Comment on ‘The viscoelastic response of Brownian suspensions’?” [J. Chem. Phys. 114, 3339 (2001)]

Lowe, C.P.
Masters, A.J.

Applied Sciences

Computational Physics

2001-02-15

Our original article presented computer simulation results for the viscoelastic response of a simple model colloidal suspension. We compared our results for the viscosity with a theoretical prediction of Verberg et al. [R. Verberg, I. M. de Schepper, and E. G. D. Cohen, Phys. Rev. E 55, 3143 (1997)] and found poor agreement. It is suggested in the previous comment that a comparison with a modified expression is more appropriate. In response we explain the basis of our comparison and expand on how a different interpretation could be made, leading to an expression of the form Felderhof suggests is appropriate. Nonetheless, as stated in the comment, the agreement with simulation is poor, no matter which of the two possible theoretical expressions is used. We also seek to clarify our position concerning the form of the high frequency response at low volume fraction. Our finding is that the ratio of this to the high frequency response in the zero density limit is not the radial distribution function at contact, as predicted by Verberg et al. [R. Verberg, I. M. de Schepper, M. J. Feigenbaum, and E. G. D. Cohen, J. Stat. Phys. 87, 1037 (1997)], but is a rather smaller quantity.

Brownian motion
suspensions
digital simulation
viscoelasticity
non-Newtonian fluids
hydrodynamics

http://resolver.tudelft.nl/uuid:d7ee29ca-87c1-4899-b068-0b0f5e268a24

https://doi.org/10.1063/1.1338510

American Institute of Physics

0021-9606

http://link.aip.org/link/JCPSA6/v114/i7/p3341/s1

Journal of Chemical Physics, 114 (7), 2001

Institutional Repository

journal article

(c) 2001 Lowe, C.P.; Masters, A.J.; American Institute of Physics