MHD natural convection of Sodium Alginate Casson nanofluid over a solid sphere

• Published in: Results in physics 2020-03, Vol.16, p.102818, Article 102818
• Main Authors: Alwawi, Firas A., Alkasasbeh, Hamzeh T., Rashad, A.M., Idris, Ruwaidiah
• Format: Article
• Language: English
• Subjects: Casson nanofluid; MHD; Natural convection; Sodium alginate; Solid sphere
• ISSN: 2211-3797; 2211-3797
• DOI: 10.1016/j.rinp.2019.102818

•When χ or β increase, the local skin friction coefficient local, Nusselt number, velocity and temperature profiles are increased.•The immersed nanoparticles of Graphite oxide in a Sodium Alginate are the highest of rate heat transfer.•Temperature of Silver-Sodium Alginate based fluid is higher than other nanoparticles Sodium Alginate based fluid with decreases of β and increases of M. MHD free convection flow of Sodium Alginate nanofluid on a solid sphere with prescribed wall temperature is investigated. Tiwari and Das’s nanofluid model is applied to analyze the influence of nanoparticles and magnetic field on a natural convective flow. Titanium dioxide (TiO2), Silver (Ag), and Graphite oxide (GO) Sodium Alginate-based nanofluid has been considered. The Keller-box method is employed to solve the transformed system of partial differential equations. The impact of Casson fluid parameter, magnetic parameter, nanoparticles volume fraction on local skin friction coefficient, local Nusselt number, temperature, and velocity are plotted and analyzed. Our graphical results revealed that the (GO)- Sodium Alginate based Casson nanofluid has the highest local skin friction, local Nusselt number and velocity profiles as compared to the other nanoparticles Sodium Alginate based Casson nanofluid.