Slip and non-slip flows of MHD nanofluid through microchannel to cool discrete heat sources in presence and absence of viscous dissipation

• Published in: Journal of magnetism and magnetic materials Vol. 580; p. 170972
• Main Authors: Hajatzadeh Pordanjani, Ahmad, Raisi, Afrasiab, Daneh-Dezfuli, Alireza
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.08.2023
• Subjects: Magnetic field; Microchannel; Nanofluid; Slip and non-slip flow; Viscous dissipation; Viscous dissipation; Microchannel; Nanofluid; Magnetic field; Slip and non-slip flow
• ISSN: 0304-8853
• DOI: 10.1016/j.jmmm.2023.170972

•The MHD nanofluid flows through the MCH under slip and non-slip boundary conditions.•Three isothermal heat sources were used on the walls.•The equations were solved using the FVM and SIMPLE algorithm.•The presence of VDS in slip and non-slip flows with MFD effects reduces the HTR.•The slip coefficient raised the Nu by 52.52% in the presence of VDS and by 1.19% in the absence of VDS. This paper investigates heat transfer (HTR) and fluid flows of a magnetohydrodynamic (MHD) nanofluid (NFD) in a two-parallel-plate microchannel with three isothermal heat sources and under temperature jump and slip (0 < B* < 0.1) and non-slip regimes. The flow is subjected to a magnetic field (0 < Ha < 60) in three zones in the presence and absence of viscous dissipation (VDS) (0 < Br < 0.1). Using SIMPLE algorithm, it is found that a rise in the Re (0 < Re < 100) increases HTR under both slip and non-slip conditions. VDS decreases HTR from the isothermal heat source to the NFD flow. An increase in the slip coefficient raises the Nu, particularly at higher Ha. A rise in the Ha leads to greater HTR under the slip boundary condition. An increase in the slip coefficient raises the Nu by 52.52% in the presence of VDS and by 1.16% in the absence of VDS.