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Journal of Thermal Science and Engineering Applications
ASME
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| Abstract: |
As conduction, convection, and radiation are fundamental modes of heat emitter and transfer,
this paper looks at the influences of temperature-dependent thermal conductivity and
thermal radiation on peristaltic flow of pseudoplastic nanofluids in an inclined nonuniform
asymmetric channel. Inclined magnetic field is taken into consideration. As the
Wiedemann–Franz law in metals, electrical conductivity has identical behavior as that of
thermal conductivity; as freely animated evenness, electrons transfer not only electric
current but also heat energy. Consequently, electrical conductivity should be depending
on the temperature of nanoparticles. The related equations of momentum, mass, and concentration
are reformulated using lubrication approximations (i.e., tiny or zero Reynolds
number and long wavelength). The resulting system of nonlinear equations is solved
semi-numerically with the aid of the parametric ND solve package using MATHEMATICA
version 11. Results of velocity, temperature, and concentration distributions are obtained
in the analytical three-dimensional forms. The streamline graphs are offered in the terminus,
which elucidate the trapping bolus phenomenon. As a special case, a comparison is
made and signified with the recently published results by Hayat et al. (2016, Soret and
Dufour Effects in MHD Peristalsis of Pseudoplastic Nanofluid With Chemical Reaction,”
J. Mol. Liq., 220, pp. 693–706). It’s found that, the increases in thermal conductivity and
electrical conductivity cause an increase in the temperature of nanofluid and the heat transfer
rate gets induced so a better absorption of solar energy is gained.
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