Comparative analysis on non-linear radiative heat transfer on MHD Casson nanofluid past a thin needle

• Published in: Journal of molecular liquids 2019-06, Vol.284, p.163-174
• Main Authors: Souayeh, Basma, Reddy, M. Gnaneswara, Sreenivasulu, P., Poornima, T., Rahimi-Gorji, Mohammad, Alarifi, Ibrahim M.
• Format: Article
• Language: English
• Subjects: Casson Nanofluid; Magnetohydrodynamic; Non-linear thermal radiation; Rheological fluid; Thin needle
• ISSN: 0167-7322; 1873-3166
• DOI: 10.1016/j.molliq.2019.03.151

The aim of this work is scrutinizing the consequences of non-linear radiation on MHD Casson nanofluid along thin needle. The situation has been mathematically modelled taking into account the thermo-diffuso and diffuso-thermo effects. Here two types of surfaces are dealt; one is fixed needle and other is moving needle. The Prandtl boundary layer equations are enclosed and solved numerically using similarity variables. Impact of different material parameters on the momentum, temperature and species concentration along with the quantities related engineering aspects like skin friction coefficient, rate of energy transfer and Sherwood number are obtained and illustrated through graphs. A comparison examination is made between studied Casson nanoflow usage makes the environment cool, reduces the friction at the surface. But Newtonian nanofluid is good for species diffusion. Numerical obtained solutions are contrasted with the published literature and found to be in nice agreement. The present exploration exhibits the prominent features in hybrid solar magneto-hydrodynamic nanofluid systems and aircraft technology. •Casson nanofluid acts as cooling and friction reducing agent rather than usual Newtonian fluid based nanoflows.•As thermophoresis parameter enhances, temperature increases while species concentration decreases.•Increase in Brownian motion increases mass diffusion and also energy of the fluid.•Non-linear form of radiative heat transfer also rises the temperature of the fluid.•Hydrodynamical boundary layer increases in the case of moving thin needle (λ = 1.0) but shrinks in fixed needle case (λ = 0.0).