THERMAL SCIENCE

International Scientific Journal

Peter Ngbo Habu

,

Noor Fadiya Mohd Noor

,

Zailan Bin Siri

MASS TRANSFER AND CATTANEO-CHRISTOV HEAT FLUX FOR A CHEMICALLY REACTING NANOFLUID IN A POROUS MEDIUM BETWEEN TWO ROTARY DISKS

ABSTRACT
This paper examines the transport of a chemically reacting nanofluid in a porous medium between two rotary disks with Cattaneo-Christov's heat flux. The non-linear ordinary differential system formed under Vonn Karman transformation of a non-linear partial differential system is solved via a shooting method with MATLAB bvp4c. The nanofluid thermodynamics profiles with variation in physical properties of thermal relaxation time, thermal radiation, porosity, and chemical reaction are observed. Axial, radial, and tangential velocities are found to be increasing functions of porous medium. A decrease in the fluid temperature is perceived as thermal radiation and thermal relaxation increase since more heat can be transported to neighboring surroundings. The concentration is enhanced with intensified Cattaneo-Christov's thermal relaxation but it oscillates with reacting chemicals. The rotary disks bound the oscillating nanofluid from downward to up-ward directions and vice versa. The axial velocity represents the change in force due to porosity and radial stretching of the disks.
KEYWORDS
Cattaneo-Christov Heat Flux, transport equation, porous medium, chemical reaction, rotary disks, nanofluid
PAPER SUBMITTED: 2021-01-05
PAPER REVISED: 2021-02-15
PAPER ACCEPTED: 2021-03-10
PUBLISHED ONLINE: 2021-12-18
DOI REFERENCE: https://doi.org/10.2298/TSCI21S2179H
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Special issue 2, PAGES [179 - 184]
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Mass transfer and Cattaneo-Christov heat flux for a chemically reacting nanofluid in a porous medium between two rotary disks

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence