MODELING AND ANALYSIS ON THIN-FILM FLOW OVER A ROUGH ROTATING MAGNETIC DISK

  • Published : 1995.10.01

Abstract

The depletion of thin liquid films due to the combined effect of centrifugation, surface roughness, and air-shear has recently been studied. While surface roughness of a rotating solid disk can be represented by deterministic cures, it has been argued that spatial random processes provide a more realistic description. Chiefly because of surface roughness, there is an asymptotic limit of retention of a thin film flowing on the rotating disk. The aim of this article is to model the depletion of thin-film flow and analyze the interplay of centrifugation, surface tension, viscosity, air-shear, disjoining pressure, and surface roughness that affect the depletion of the film. Also, the robustness of stochastic description of surface roughness is examined.

Keywords

References

  1. J. Appl. Physics v.29 A.G.Emslie;F.T.Bonner;L.G.Peck
  2. J. Appl. Phys. v.62 S.Middleman
  3. J. Appl. Phys. v.64 W.H.McConnell
  4. J. Appl. Phys. v.61 M.Yanagisawa
  5. Phys. Fluids v.31 T.J.Rehg;B.G.Higgins
  6. J. Appl. Phys. v.69 S.Kim;J.S.Kim;F.Ma
  7. J. Appl. Phys. v.68 F.Ma;J.H.Hwang
  8. Revue Phys. Appl. v.23 G.F.Teletzke;H.T.Davis;L.E.Scriven