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Entropy 2019, 21(3), 236; https://doi.org/10.3390/e21030236

Effects of Radiative Electro-Magnetohydrodynamics Diminishing Internal Energy of Pressure-Driven Flow of Titanium Dioxide-Water Nanofluid due to Entropy Generation

1
Department of Mathematics & Statistics, FBAS, IIUI, Islamabad 44000, Pakistan
2
Department of Mathematics, University of Education Lahore, Faisalabad Campus, Faisalabad 38000, Pakistan
3
Center for Modeling & Computer Simulation, Research Institute, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
*
Author to whom correspondence should be addressed.
Received: 13 February 2019 / Revised: 27 February 2019 / Accepted: 27 February 2019 / Published: 1 March 2019
(This article belongs to the Special Issue Entropy Generation in Nanofluid Flows II)
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Abstract

The internal average energy loss caused by entropy generation for steady mixed convective Poiseuille flow of a nanofluid, suspended with titanium dioxide (TiO2) particles in water, and passed through a wavy channel, was investigated. The models of thermal conductivity and viscosity of titanium dioxide of 21 nm size particles with a volume concentration of temperature ranging from 15 °C to 35 °C were utilized. The characteristics of the working fluid were dependent on electro-magnetohydrodynamics (EMHD) and thermal radiation. The governing equations were first modified by taking long wavelength approximations, which were then solved by a homotopy technique, whereas for numerical computation, the software package BVPh 2.0 was utilized. The results for the leading parameters, such as the electric field, the volume fraction of nanoparticles and radiation parameters for three different temperatures scenarios were examined graphically. The minimum energy loss at the center of the wavy channel due to the increase in the electric field parameter was noted. However, a rise in entropy was observed due to the change in the pressure gradient from low to high. View Full-Text
Keywords: electric field; energy loss; titanium dioxide water nanofluid; magnetic field; Poiseuille flow electric field; energy loss; titanium dioxide water nanofluid; magnetic field; Poiseuille flow
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Zeeshan, A.; Shehzad, N.; Abbas, T.; Ellahi, R. Effects of Radiative Electro-Magnetohydrodynamics Diminishing Internal Energy of Pressure-Driven Flow of Titanium Dioxide-Water Nanofluid due to Entropy Generation. Entropy 2019, 21, 236.

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