THERMAL SCIENCE

International Scientific Journal

Muhammad Arshad Khan

,

Riaz Muhammad

,

Sumaira Qayyum

,

Niaz B. Khan

,

M. Jameel

ANALYSIS OF ENTROPY GENERATION MINIMIZATION IN FLOW OF REE-EYRING NANOFLUID BETWEEN TWO COAXIALLY ROTATING DISKS

ABSTRACT
Present communication addresses MHD radiative nanomaterial flow of Ree-Eying fluid between two coaxially rotating disks. Both disks are stretchable. Buongiorno model is used for nanofluids. Nanofluid aspects comprise random motion of particles (Brownian diffusion) and thermophoresis. The MHD fluid is considered. Furthermore, dissipation, radiative heat flux and Ohmic heating effects are considered to model the energy equation. Total entropy rate is calculated through implementation of Second thermodynamics law. Series solutions are developed through homotopy analysis method. Impacts of physical parameters on the velocity, temperature, entropy, and concentration fields are discussed graphically. Skin friction coefficient and heat and mass transfer rates are numerically calculated. It is noticed that the velocity of liquid particles decreases vs. higher estimations of magnetic parameter while it enhances via larger rotational parameter. Temperature field significantly increases in the presence of both Brownian diffusion and thermophoresis parameters.
KEYWORDS
stretchable rotating disks, entropy generation, MHD Ree-Eyring nanofluid, Brownian and thermophoresis diffusion effects, Thermal radiation and Ohmic heating
PAPER SUBMITTED: 2019-07-22
PAPER REVISED: 2019-12-16
PAPER ACCEPTED: 2020-01-02
PUBLISHED ONLINE: 2020-02-08
DOI REFERENCE: https://doi.org/10.2298/TSCI190722057K
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Issue 5, PAGES [3617 - 3628]
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Analysis of entropy generation minimization in flow of Ree-Eyring nanofluid between two coaxially rotating disks

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