Mixed convection in sinusoidal lid driven cavity with non-uniform temperature distribution on the wall utilizing nanofluid

Abstract

Mixed convection heat transfer of Cu-water nanofluid in an arc cavity with non-uniform heating has been numerically studied. The top flat moving wall is isothermally cooled at Tc and moved with a constant velocity. While the heated arc stationary wall of the cavity is maintained at a hot temperature Th. FORTRAN code is used to solve the mass, momentum, and energy equations in dimensionless form with suitable boundary conditions. In this study, the Reynolds number changed from 1 to 2000, and the Rayleigh number changed from 0 to 10 7 . Also, the range of nanoparticles volume fraction extends from ϕ = 0 to 0.07. Stream vorticity method selected for the discretization of flow and energy equations. The present results are compared with the previous results for the validation part, where the results found a good agreement with the others works. The isotherms are regulated near the arc-shape wall causing a steep temperature gradient at these regions and the local and average heat transfer rate increases with increased volume fraction or Reynolds number or Rayleigh number. Finally, Correlation equations of the average Nusselt number from numerical results are presented.

Numerical Study of Lid-Driven Hybrid Nanofluid Flow in a Corrugated Porous Cavity in the Presence of Magnetic Field

“… * constant value; remark: if using dimensionless numbers, the ranges are based on common academic proposals in the literature [ 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 ]. …”

“…A nonlinear influence of nanoparticle concentration on the heat transfer rate for high Reynolds number has been established. Aljabair et al [ 14 ] presented a numerical study of the convective heat and mass transfer of Cu–H 2 O nano-liquid inside an arc chamber with inconsistent heating and a top flat sliding wall. Their findings suggest that the sliding baffle becomes more active to boost heat transfer.…”

Conjugate mixed convection heat transfer with internal heat generation in a lid-driven enclosure with spinning solid cylinder

“…A moving boundary of the enclosure enhances the performance of the fluid flow and heat transfer parameters. Many literatures [ 2 , 3 , 4 , 5 , 6 ] investigated fluid flow and heat transfer characteristics for mixed convection problems with differentially heated lid-driven enclosures. Two major types of research works were traced in this regime.…”

“…Further enhancement in heat transfer characteristics was achieved by Aljabair et al. [ 5 ] due to the utilization of nanofluid. For the case of sliding side walls of the enclosure, Oztop and Dagtekin [ 6 ] observed that heat transfer enhanced in the natural convection domain for opposing shear and buoyancy forces.…”

Magnetic-Mixed Convection in Nanofluid-Filled Cavity Containing Baffles and Rotating Hollow-Cylinders with Roughness Components

“…Tey considered Brinkman and Wasp models and suggested heat transfer rate increases for increased Ra and ϕ but diminishes for Ha. Aljabair et al [11] used FORTRAN code to solve mixed convection in a nonuniformly heated arc-shaped cavity. Tey recommended the local and average Nusselt numbers are increasing function of ϕ, Re, and Ra.…”