Simulation of MHD free convection inside a square enclosure filled porous foam. (April 2022)

• Record Type: Journal Article
• Authors: Liu, Chao; Farouk, Naeim; Ayed, Hamdi; Aouaini, Fatma; Bouzgarrou, S.M.; Mouldi, Abir; Wae-hayee, Makatar; Mohamed, Abdullah; Jin, Guolin
• Is Part Of: Case studies in thermal engineering. Volume 32(2022)
• Publication Date: 2022-04
• Subjects: Magnetohydrodynamic -- Magnetic nanofluid -- Porous medium -- Free convection -- Numerical study; Heat engineering -- Case studies -- Periodicals; 621.40205
• DOI: 10.1016/j.csite.2022.101901
• Languages: English
• ISSNs: 2214-157X

Abstract

Abstract: MHD natural convection of F e 3 O 4 -water suspension in the presence of magnetic field of solenoid inside a porous enclosure was numerically simulated. Computational fluid dynamic based on finite volume method were exerted to break and solve the PDEs equations. A solenoid was embedded around the cavity for generating a non-uniform magnetic field. The vertical walls of enclosure were maintained at uniform temperatures of T h and T c and horizontal walls were insulated. Many cases have been simulated to understand the impacts of porous Rayleigh numbers of 10–1000, volume fractions of 0–4%, porosities of 0.5–0.9, and Hartmann numbers 0 to 120. Findings indicate that the presence of magnetic field had a positive effect on heat transfer in low porous Rayleigh number and high Hartmann number, for all porosities. In highest porosity and 4% volume fraction, Nusselt number increased 140%; whereas at high R a p, the presence of a weak magnetic field decreased the heat transfer rate.