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Magnetohydrodynamic peristaltic motion of a Sisko fluid in a symmetric or asymmetric channel

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Listed:
  • Wang, Yongqi
  • Hayat, Tasawar
  • Ali, Nasir
  • Oberlack, Martin

Abstract

This paper presents a numerical study for the peristaltic flow characteristics of a Sisko fluid in a symmetric or asymmetric channel. The fluid is assumed to be electrically conducting in the presence of a uniform magnetic field. The mathematical formulation consisting of nonlinear governing equations and boundary conditions is first casted into a dimensionless form. The resulting equation for long wavelength and low Reynolds number assumptions is then numerically solved using an iterative method. The behaviors of the shear-thinning and shear-thickening non-Newtonian Sisko fluids are compared with those of the corresponding Newtonian fluid. Velocity distributions, pressure gradients, shear stresses as well as streamline pattern with respect to various material parameters and phase differences of the wall peristalsis are investigated. Some typical characteristics of peristaltic motion, e.g. pumping against a pressure rise and trapping phenomena etc. are observed from the numerical results and discussed.

Suggested Citation

  • Wang, Yongqi & Hayat, Tasawar & Ali, Nasir & Oberlack, Martin, 2008. "Magnetohydrodynamic peristaltic motion of a Sisko fluid in a symmetric or asymmetric channel," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 387(2), pages 347-362.
    • Handle: RePEc:eee:phsmap:v:387:y:2008:i:2:p:347-362
    DOI: 10.1016/j.physa.2007.10.020
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    References listed on IDEAS

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    1. Hayat, T. & Ali, N., 2006. "Peristaltically induced motion of a MHD third grade fluid in a deformable tube," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 370(2), pages 225-239.
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    Cited by:

    1. Hayat, Tasawar & Nawaz, Sadaf & Alsaedi, Ahmed, 2019. "Entropy generation and endoscopic effects on peristalsis with modified Darcy’s law," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 536(C).

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