Effect 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

Derbal, Djamila (avtor), Bouzit, Mohamed (avtor), Mokhefi, Abderrahim (avtor), Bouzit, Fayçal (avtor)

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 γ (0°, 60°, 90°), Reynolds number Re (10, 100, 200) and nanoparticle volume fraction φ (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).

• Jezik: Angleški jezik
• Ključne besede: forced convection, backward-facing step, curved conduit, fixed cylinder, ferrofluid, finite element method, magnetohydrodynamic
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2023
• Št. strani: Str. 135-154
• Številčenje: Vol. 69, no. 3/4
• PID: 20.500.12556/RUL-145161
• UDK: 519.62
• ISSN pri članku: 0039-2480
• DOI: 10.5545/sv-jme.2022.239
• COBISS.SI-ID: 148427267
• Datum objave v RUL: 11.04.2023

Gradivo je del revije

• Naslov: Strojniški vestnik
• Skrajšan naslov: Stroj. vestn.
• Založnik: Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.
• ISSN: 0039-2480
• COBISS.SI-ID: 762116

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Naslov: Vpliv kota ukrivljenosti v kanalu z adiabatnim valjem nad nazaj obrnjeno stopnico na magnetohidrodinamično obnašanje ob prisotnosti nanofluida
• Ključne besede: prisilna konvekcija, nazaj obrnjen korak, ukrivljen kanal, nepremični valj, ferrofluid, metoda končnih elementov, magnetohidrodinamika