MHD mixed convective nanofluid flow about a vertical slender cylinder using overlapping multi-domain spectral collocation approach

• Published in: Case studies in thermal engineering 2020-04, Vol.18, p.100598, Article 100598
• Main Authors: Mkhatshwa, M.P., Motsa, S.S., Ayano, M.S., Sibanda, P.
• Format: Article
• Language: English
• Subjects: Chemical reaction; Cross-diffusion; Hall current; Overlapping multi-domain bivariate spectral quasilinearisation method; Vertical slender cylinder
• ISSN: 2214-157X; 2214-157X
• DOI: 10.1016/j.csite.2020.100598

This paper investigates the magnetohydrodynamic flow, heat and mass transfer characteristics in a silver water nanofluid about a vertical slender cylinder by considering diffusion-thermal, thermo-diffusion, chemical reaction and Hall effects. The nonlinear partial differential equations modelling the flow problem are non-dimensionalized and the overlapping multi-domain bivariate spectral quasilinearisation method is used to solve the dimensionless equations. The impact of flow parameters on the fluid properties and physical quantities of interest are determined. Amongst other findings, we found that increment in the nanoparticle volume fraction, Hall current and curvature parameter augments the skin friction coefficient and diminishes the heat transfer rate, while the introduction of chemical reaction, silver nanoparticles, Hall current and Soret effect into the system enhances the mass transfer rate. Also, the fluid properties amplifies in the curved surface than in the flat plate.