Magnetized supercritical third-grade nanofluid flow from a vertical cylinder using a Crank-Nicolson implicit scheme

Hiremath, A, Reddy, GJ, Basha, H, Narayanan, NSV and Beg, OA ORCID: https://orcid.org/0000-0001-5925-6711 2022, 'Magnetized supercritical third-grade nanofluid flow from a vertical cylinder using a Crank-Nicolson implicit scheme' , Waves in Random and Complex Media .

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Abstract

The current study investigates the supercritical convective radiative buoyancy-driven flow and heat transfer in external coating flow of an electrically conducting viscoelastic thirdgrade nanofluid from hotmoving /stationary cylinderunder constant radial magnetic field. A new computational thermodynamic model has been proposedto study the supercritical behaviour of thirdgrade aqueous nanofluid in terms of supercritical water (SCW). The Redlich–Kwong equation 2 of state (RK-EOS) has been deployed to calculatethermal expansion coefficient for free convective flow of supercritical nanofluid in terms of temperature, compressibility factor and pressure. A validation test has been conducted for RK-EOS with available experimental results. A well-tested conditionally stable Crank-Nicolson finite difference scheme has been implemented to obtain numerical solutions for the transformed dimensionless coupledconservation equations.Graphical results for flow variables, heat transfer and skin-friction coefficient distributions are presented for variation of Nanoscale, rheological, magnetic, radiative and thermodynamic parameters. Transient velocity is reduced whereas temperature is elevated with amplified values of third-grade fluid parameter, reduced pressure, reduced temperature, and decreased values of volume fraction of nanofluid for a stationary cylinder under supercritical conditions. Validation of special cases of the model computed with the Crank Nicolson method is conducted against previously published results. Important applications of the current study include nuclear reactor vessels, deposition of smart (functional magnetic) nano-coatings and solar collector energy systems.

Item Type: Article
Additional Information: This is an Accepted Manuscript of an article published by Taylor & Francis in Waves in Random and Complex Media on 10th August 2022, available at: http://www.tandfonline.com/10.1080/17455030.2022.2103207
Schools: Schools > School of Computing, Science and Engineering
Journal or Publication Title: Waves in Random and Complex Media
Publisher: Taylor & Francis
ISSN: 1745-5030
Related URLs:
Depositing User: OA Beg
Date Deposited: 26 Jul 2022 09:59
Last Modified: 17 Aug 2022 08:00
URI: https://usir.salford.ac.uk/id/eprint/64417

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