7544 KB0 KB199920252023Bouzit, FayçalBouzit, MohamedDerbal, DjamilaMokhefi, Abderrahimštevilka:3/4letnik:69str. 135-154ISSN:0039-2480DOI:10.5545/sv-jme.2022.239COBISSID_HOST:148427267URN:URN:NBN:SI:doc-X2TB8DMHenZveza strojnih inženirjev in tehnikov Slovenije etc.Strojniški vestnikbackward-facing stepcurved conduitferrofluidfinite element methodfixed cylinderforced convectionmagnetohidrodinamikamagnetohydrodynamicmetoda končnih elementovnazaj obrnjen koraknepremični valjprisilna konvekcijaukrivljen kanalEffect of the curvature angle in a conduit with an adiabatic cylinder over a backward facing step on the magnetohydrodynamic behaviour in the presence of a nanofluid|A backward facing duct are present in various industrial applications especially those focused on heat transfer. The flow through a curved backward facing duct especially in the presence of nanofluid presents complexities compared to a straight backward facing step (BFS) duct. Therefore, the present numerical study deals a nanofluid flow (Fe3O4-H2O) forced convection in a curved backward facing duct. The objective of this investigation is to visualize at different curvature angles g (0°, 30°, 45°, 60°, 90°) imposed on the top wall of the duct, the effect of Hartmann number Ha (0, 50, 100), magnetic field inclination angle ? (0°, 60°, 90°), Reynolds number Re (10, 100, 200) and nanoparticle volume fraction ? (0 %, 0.05 %, 0.1 %). The dimensionless governing equations are solved using the multigrid finite element method. The results showed that the heat transfer was enhanced at the curved angle g = 90° for large Hartman numbers, thus, the average Nusselt number increased with a ratio of 240.74 % in the case of Hartmann number (Ha = 100)TEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Fakulteta za strojništvo