Journal of Central South University

, Volume 22, Issue 1, pp 392–401 | Cite as

Heat transfer in a porous saturated wavy channel with asymmetric convective boundary conditions

Article
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Abstract

The viscous flow in a wavy channel with convective boundary conditions is investigated. The channel is filled with a porous viscous fluid. Two cases of equal and different external convection coefficients on the walls are taken into account. Effect of viscous dissipation is also considered. The governing equations are derived employing long wavelength and low Reynolds number approximations. Exact closed form solutions are obtained for the simplified equations. Important physical features for peristaltic flow caused by the wavy wave are pumping, trapping and heat transfer rate at the channel walls. These are discussed one by one in depth and detail through graphical illustrations. Special attention has been given to the effects of convective boundary conditions. The results show that for Bi 1≠Bi 2, there exists a critical value of Brinkman number Br c at which the temperatures of both the walls become equal. And, for Bi 1>Bi 2 and Br>Br c, the temperature of the cold wall exceeds the temperature of hot wall.

Key words

peristalsis heat transfer porous medium convective boundary conditions 
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Copyright information

© Central South University Press and Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.Department of MathematicsCOMSATS Institute of Information TechnologyIslamabadPakistan
  2. 2.Department of Mathematics, Faculty of ScienceKing Abdulaziz UniversityJeddahSaudi Arabia
  3. 3.Department of MathematicsQuaid-I-Azam UniversityIslamabadPakistan

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