Effect of magnetic field on the mixed convection in double lid‐driven porous cavities filled with micropolar nanofluids. Issue 4 (31st January 2022)

• Record Type: Journal Article
• Authors: Ahmed, Sameh E.; Hussein, Ahmed Kadhim; Mansour, M. A.; Afrand, Masoud; Morsy, Zeinab; Kolsi, Lioua
• Is Part Of: Numerical methods for partial differential equations. Volume 38:Issue 4(2022)
• Page Start: 1090
• Page End: 1111
• Publication Date: 2022-01-31
• Subjects: cooling -- discrete heat source -- lid‐driven cavity -- MHD -- micropolar nanofluid -- mixed convection -- non‐equilibrium model -- partial heating -- porous medium; Differential equations, Partial -- Numerical solutions -- Periodicals; 515.353
• DOI: 10.1002/num.22820
• Languages: English
• ISSNs: 0749-159X

Abstract

Abstract: The effect of magnetic field inclination and double lid‐driven on the mixed convection in a square cavity is investigated based on the local thermal non‐equilibrium model. The cavity was filled with a copper–water micropolar nanofluid saturated with a porous medium. The top and bottom walls are considered moving to the left or right directions at a constant velocity. In the current work, the ranges of parameters are as follow: Hartmann number (0 ≤ Ha ≤ 50), length of the heat source (0.2 ≤ B ≤ 0.8), Richardson number (0 ≤ Ri ≤ 10), Reynolds number (0 ≤ Re ≤ 100), location of the heat source (0.3 ≤ D ≤ 0.7), vortex to molecular viscosity ratio (0 ≤ Δ ≤ 2), Nield number (1 ≤ Q ≤ 100) and solid volume fraction (0 ≤ φ ≤ 0.1). It was found that the heat transfer decreases as the dimensionless heat source location and the Nield number increase. Also, the growing in the Nield number enhances the rate of the heat transfer for the porous phase and increases the thermal equilibrium state of the system.