Archive of Applied Mechanics

, Volume 78, Issue 8, pp 599–624

Mixed convective heat and mass transfer in a non-Newtonian fluid at a peristaltic surface with temperature-dependent viscosity

  • N. T. M. Eldabe
  • M. F. El-Sayed
  • A. Y. Ghaly
  • H. M. Sayed
Original

DOI: 10.1007/s00419-007-0181-6

Cite this article as:
Eldabe, N.T.M., El-Sayed, M.F., Ghaly, A.Y. et al. Arch Appl Mech (2008) 78: 599. doi:10.1007/s00419-007-0181-6
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Abstract

We investigate the problem of the unsteady mixed convection peristaltic mechanism. The flow includes a temperature-dependent viscosity with thermal diffusion and diffusion-thermo effects. The peristaltic flow is between two vertical walls, one of which is deformed in the shape of traveling transversal waves exactly like peristaltic pumping and the other of which is a parallel flat plate wall. The equations of momentum, energy, and concentration are subject to a set of appropriate boundary conditions by assuming that the solution consists of two parts: a mean part and a perturbed part. The solution of the perturbed part has been obtained by using the long-wave approximation. The mean part has been solved and coincides with the approximation of Ostrach. The mean part (zeroth order), the first order, and the total solution of the problem have been evaluated numerically for several sets of values of the parameters entering the problem. The skin friction, and the rate of heat and mass transfer at the walls are obtained and illustrated graphically.

keywords

Peristaltic flow Biviscosity fluid Mixed convection Heat and mass transfer Variable viscosity 

Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • N. T. M. Eldabe
    • 1
  • M. F. El-Sayed
    • 1
  • A. Y. Ghaly
    • 1
  • H. M. Sayed
    • 1
  1. 1.Department of Mathematics, Faculty of EducationAin Shams UniversityCairoEgypt

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