Journal
APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION
Volume 36, Issue 4, Pages 499-516Publisher
SHANGHAI UNIV
DOI: 10.1007/s10483-015-1926-9
Keywords
inclined magnetic field; variable thermal conductivity; Jeffrey fluid; peristaltic transport; heat transfer
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The effect of an inclined magnetic field in the peristaltic flow of a Jeffrey fluid with variable thermal conductivity is discussed. The temperature dependent thermal conductivity of fluid in an asymmetric channel is taken into account. A dimensionless nonlinear system subject to a long wavelength and a low Reynolds number is solved. The explicit expressions of the stream function, the axial velocity, the pressure gradient, and the temperature are obtained. The effects of all physical parameters on peristaltic transport and heat transfer characteristics are observed from graphical illustrations. The behaviors of theta a [0, pi/2] and theta a [pi/2, pi] on fluid flow and heat transfer are found to be opposite. Further, the size of trapped bolus is greater for the case of the inclined magnetic field (theta not equal pi/2) than that for the case of the transverse magnetic field (theta = pi/2). The heat transfer coefficient decreases when the constant thermal conductivity (Newtonian) fluid is changed to the variable thermal conductivity (Jeffrey) fluid.
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