Author:
Kumar Sanjay,Sharma Kushal,Makinde Oluwole Daniel,Joshi Vimal Kumar,Saleem Salman
Abstract
Purpose
The purpose of this study is to investigate the entropy generation in different nanofluids flow over a vertically moving rotating disk. Unlike the classical Karman flow, water-based nanofluids have various suspended nanoparticles, namely, Cu, Ag, Al2O3 and TiO2, and the disk is also moving vertically with time-dependent velocity.
Design/methodology/approach
The Keller box technique numerically solves the governing equations after reduction by suitable similarity transformations. The shear stress and heat transport features, along with flow and temperature fields, are numerically computed for different concentrations of the nanoparticles.
Findings
This study is done comparatively in between different nanofluids and for the cases of vertical movement of the disk. It is found that heat transfer characteristics rely not only on considered nanofluid but also on disk movement. Moreover, the upward movement of the disk diminishes the heat-transfer characteristics of the fluid for considered nanoparticles. In addition, for the same group of nanoparticles, an entropy generation study is also performed, and an increasing trend is found for all nanoparticles, with alumina nanoparticles dominating the others.
Originality/value
This research is a novel work on a vertically moving rotating surface for the water-conveying nanoparticle fluid flow with entropy generation analysis. The results were found to be in good agreement in the case of pure fluid.
Subject
Mechanical Engineering,Aerospace Engineering,Computational Mechanics,Engineering (miscellaneous)
Reference46 articles.
1. Numerical simulations for optimised flow of second-grade nanofluid due to rotating disk with nonlinear thermal radiation: Chebyshev spectral collocation method analysis;Pramana,2022
2. Flow and heat transfer over a rotating porous disk in a nanofluid;Physica B: Condensed Matter,2011
3. Second law analysis in heat transfer;Energy,1980
4. On the flow due to a rotating disk;Journal of Fluid Mechanics,1966
5. Thermal analysis and entropy generation of magnetic Eyring-Powell nanofluid with viscous dissipation in a wavy asymmetric channel;International Journal of Numerical Methods for Heat and Fluid Flow,2023
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