MHD natural convection in a cavity in the presence of cross partial magnetic fields and Al2O3-water nanofluid. (15th December 2020)

• Record Type: Journal Article
• Authors: Geridonmez, B. Pekmen; Oztop, H.F.
• Is Part Of: Computers & mathematics with applications. Volume 80:issue 12(2020)
• Page Start: 2796
• Page End: 2810
• Publication Date: 2020-12-15
• Subjects: Cross partial magnetic fields -- Heat transfer -- Natural convection -- Radial basis functions -- Nanofluid; Electronic data processing -- Periodicals; Mathematics -- Data processing -- Periodicals; 510.28541
• DOI: 10.1016/j.camwa.2020.10.003
• Languages: English
• ISSNs: 0898-1221

Abstract

Abstract: In this study, a numerical investigation on nanofluid flow and heat transfer is presented in a cavity under the effects of cross partial magnetic fields and a partial heater. The governing stream function–vorticity equations are solved by thin plate spline radial basis functions (Rbfs) in space derivatives and backward Euler method in time derivatives. The vorticity transport equation involves either only buoyancy force or both buoyancy and cross partial magnetic field force. The results are depicted as streamlines, isotherms and vorticity contours as well as mean Nusselt number. The convective heat transfer increases with the rise in the length of the partial heater, in the concentration of nanoparticles and in Rayleigh number while it decreases with the augmentation of the Lorentz force. Highlights: Cross partial magnetic field is firstly studied in a 2D cavity containing nanofluid. Large magnitude of cross partial magnetic field suppresses the convection. Cross partial magnetic field may be a controller over fluid flow and heat transfer. Thin plate spline radial basis function is carried out in numerical simulation.