Surface Roughness and Hydrodynamic Boundary Slip of a Newtonian Fluid in a Completely Wetting System

Elmar Bonaccurso, Hans-Jürgen Butt, and Vincent S. J. Craig
Phys. Rev. Lett. 90, 144501 – Published 8 April 2003

Abstract

The influence of surface roughness on the boundary condition for the flow of a Newtonian fluid near a hard wall has been investigated by measurement of the hydrodynamic drainage force. The degree of slip is found to increase with surface roughness. This leads to the conclusion that in most practical situations boundary slip takes place, leading to a reduction of the drainage force.

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  • Received 1 July 2002

DOI:https://doi.org/10.1103/PhysRevLett.90.144501

©2003 American Physical Society

Authors & Affiliations

Elmar Bonaccurso2,3, Hans-Jürgen Butt2,3, and Vincent S. J. Craig1,*

  • 1Department of Applied Mathematics, Research School of Physical Sciences, Australian National University, Canberra ACT 0200, Australia
  • 2Max-Planck Institute for Polymer Research, 55128 Mainz, Germany
  • 3Physical Chemistry II, University of Siegen, 57068 Siegen, Germany

  • *To whom correspondence should be addressed. Email address: vince.craig@anu.edu.au

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Issue

Vol. 90, Iss. 14 — 11 April 2003

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