Theoretical analysis of entropy generation in second grade nanofluid considering heat source/sink over a rotating disk

Abstract

Purpose This study aims to focus on second grade fluid flow over a rotating disk in the presence of chemical reaction. Uniform magnetic field is also taken into account. Because of the smaller magnetic Reynolds number, induced magnetic field is negligible. Heat equation is constructed by considering heat source/sink. Design/methodology/approach Suitable variables are used to transform nonlinear partial differential equations to ordinary ones. Convergent series solutions are attained by applying homotopy analysis method. Findings Trends of different parameters on concentration, velocity and temperature are shown graphically. Skin friction coefficient and local Nusselt number are calculated and investigated under the effect of elaborated parameters. An elevation in the value of magnetic field parameter causes collapse in the velocity distributions. Velocity distribution in increasing function of viscoelastic parameter. Temperature and concentration profiles are decreasing functions of viscoelastic parameter. Concentration distribution reduces by increasing the chemical reaction parameter. There is more surface drag force for larger M, while opposite behavior is noted for β. Originality/value To the best of the authors’ knowledge, such consideration is yet to be published in the literature.

Entropy generation in water conveying nanoparticles flow over a vertically moving rotating surface: Keller box analysis

“…In our study, we have taken care of this observation and have kept nanoparticle concentration less than 4%. Further readings on the rotating disk phenomenon and associated processes can be found in the literature as Liu et al (2019), Khan et al (2019), Rashid and Liang (2020), Reddy et al (2021) and Javed et al (2021).…”

The electrical magnetohydrodynamic (MHD) and shape factor impacts in a mixture fluid suspended by hybrid nanoparticles between non-parallel plates

“…Some distinguished findings in these investigations are cited Refs. in non-Newtonian nanofluids, [8][9][10] thermal radiation effects, [11][12][13][14] heat generation (absorption) impacts, [15][16][17] chemically reactive species, [18][19][20][21][22] with diverse techniques such as RKF-45, 23,24 spectral quasi-Linearization method (SQLM), 25,26 finite element method (FEM), 27,28 DRA [29][30][31] via stretchable sheets. [32][33][34] Due to the broad variety of applications in many industrial, mechanical, and physiological operations such as targeted drug distributions, magnetic resonance imaging (MRI), magnet generators, etc., the fluid flow phenomena are highly significant like an externally used magnetic field.…”

“…Some distinguished findings in these investigations are cited Refs. in non-Newtonian nanofluids, 8–10 thermal radiation effects, 11–14 heat generation (absorption) impacts, 15–17 chemically reactive species, 18–22 with diverse techniques such as RKF-45, 23,24 spectral quasi-Linearization method (SQLM), 25,26 finite element method (FEM), 27,28 DRA 29–31 via stretchable sheets. 32–34…”