Analysis of flow and heat transfer in water based nanofluid due to magnetic field in a porous enclosure with constant heat flux using CVFEM

• Published in: Computer methods in applied mechanics and engineering Vol. 320; pp. 68 - 81
• Main Authors: Sheikholeslami, M., Zeeshan, A.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15-06-2017; Elsevier BV
• Subjects: Augmentation; Buoyancy; Computational fluid dynamics; Concentration (composition); Elliptic cylinder; Enclosures; Fluid flow; Hartmann number; Heat flux; Heat transfer; Inclination angle; KKL model; Magnetic fields; Magnetic permeability; MHD; Nanofluid; Nanofluids; Nanoparticles; Natural convection; Nusselt number; Porous media; Rayleigh number; Studies; Porous media; MHD; KKL model; Natural convection; Nanofluid; Elliptic cylinder
• ISSN: 0045-7825; 1879-2138
• DOI: 10.1016/j.cma.2017.03.024

Impact of Lorentz forces on CuO–water nanofluid flow in a permeable enclosure is presented by means of CVFEM. Darcy’s law is applied for porous media. In order to predict properties of nanofluid, KKL model has been utilized. Important parameters are inclination angle (ξ=0∘ to 90°), CuO–water volume fraction (ϕ=0 and 0.04), Hartmann (Ha=0 to 20) and Rayleigh (Ra=102,250 and 103) numbers for porous medium. A formula for Nuave is provided. Results demonstrated that Nusselt number detracts with enhancement of ξ,Ha. Heat transfer augmentation detracts with rise of buoyancy forces but it enhances with rise of inclination angle and Hartmann number.
•The flow of CuO–water nanofluid is modeled using Darcy’s law, heat, mass and momentum transfer equations.•The problem employs CVFEM to solve the partial differential equation.•In the flow of CuO–water nanofluid Heat transfer augmentation detracts with rise of buoyancy forces through an elliptic porous enclosure.•A rise in heat transfer augmentation is observed with increase of inclination angle and Hartmann number.•Nuave enhances with enhancement of Rayleigh number and inclination angle but it attenuates with rise of Hartmann number.