MRT-lattice Boltzmann simulation of magnetic field effects on heat transfer from a heater in a C-shaped cavity filled with non-Newtonian hybrid nanofluids

• DOI: 10.1016/j.ijft.2023.100345
• Publication Date: 2023-04-17T16:21:53Z
• Authors: Nur E. Jannat Asha; Preetom Nag; Most. Nasrin Akhter; Md. Mamun Molla
• Keywords: Hartmann number; Lattice Boltzmann methods

The numerical investigation focuses on the phenomenon of power-law non-Newtonian magnetohydrodynamic (MHD) natural convection heat transfer in a C-shaped cavity that is filled with ethylene glycol-Al2O3 and Cu hybrid nanofluids heating block by utilizing MRT (multiple-relaxation-time) lattice Boltzmann method (LBM). maintained constant flux condition placed middle right wall, top two sides are considered as lower temperature conditions. other walls adiabatic boundary condition. Hydro-thermal analysis performed for different Rayleigh numbers (Ra), index (n), Hartmann (Ha), magnetic field inclination angle (γ), nanoparticle volume fraction (ϕ). Results obtained from simulation presented plotting streamlines isotherms, average Nusselt numbers, velocity temperature. results found when number increases rate decreases. In addition, decreases higher value index. For like hybrid, Cu, Al2O3 nanofluids, increasing values Ha number. Here than nanofluids. Total entropy band decreasing due to rises, Ra=104,106.