Numerical investigation on transient third-grade magnetized nanofluid flow and radiative convection heat transfer from a stationary/moving cylinder : nanomaterial and nanoparticle shape effects

Hiremath, A; Reddy, GJ; Beg, OA; Holla, H

Abstract

In this study, a mathematical model is developed for analyzing the time-dependent magnetoconvective flow and heat transfer characteristics of an electrically conducting (functional) thirdgrade Reiner-Rivlin non-Newtonian nanofluid from a moving or stationary hot cylinder in the
presence of magnetic field and thermal radiation. A well-tested convergent Crank-Nicolson type
finite difference algorithm is employed to solve the transformed, nonlinear boundary value
problem. The Tiwari-Das nanofluid volume fraction model is adopted for nanoscale effects and
the Rosseland algebraic flux model for radiative heat flux effects. It has been shown that the shape
of nanoparticles remarkably contributes to the enhancement of heat transfer. Several metallic
nanoparticle types such as Al2O3, Cu, and TiO2 are examined. It is found from the investigation
that the viscoelastic nanofluid with TiO2 nanoparticles results in more heat transfer than the other
nanoparticles. Lower velocity and higher temperature values are computed at transient conditions
with a higher third-grade fluid parameter for the flow of nanofluid (Al2O3-SA). The plots of
transient friction and heat transfer coefficients are visualized at the surface of a hot cylinder. The
tabulated heat transfer coefficient is comparatively more for the moving cylinder than the
stationary cylinder. Detailed validation of results of the numerical scheme with previous studies is
included. The simulations find applications in coating deposition (enrobing) of magnetic
nanomaterial at high temperatures, functional nanomaterial synthesis, etc.

Citation

Hiremath, A., Reddy, G., Beg, O., & Holla, H. (2022). Numerical investigation on transient third-grade magnetized nanofluid flow and radiative convection heat transfer from a stationary/moving cylinder : nanomaterial and nanoparticle shape effects. Waves in Random and Complex Media, https://doi.org/10.1080/17455030.2021.2024300

• Journal Article Type: Article
• Acceptance Date: Dec 27, 2021
• Online Publication Date: Feb 2, 2022
• Publication Date: Feb 2, 2022
• Deposit Date: Jan 6, 2022
• Publicly Available Date: Feb 2, 2023
• Journal: Waves in Random and Complex Media
• Print ISSN: 1745-5030
• Electronic ISSN: 1745-5049
• Publisher: Taylor and Francis
• DOI: https://doi.org/10.1080/17455030.2021.2024300
• Publisher URL: https://doi.org/10.1080/17455030.2021.2024300
• Related Public URLs: https://www.tandfonline.com/loi/twrm20
• Additional Information: Access Information : This is an Accepted Manuscript of an article published by Taylor & Francis in Waves in Random and Complex Media on 2nd February 2022, available online: http://www.tandfonline.com/10.1080/17455030.2021.2024300.