Abstract— The problem of Marangoni convection boundary layer flow in nanofluid with radiation effects is studied using different types of nanoparticles. The general governing partial differential equations are transformed into a set of two nonlinear ordinary differential equations using unique similarity transformation. Numerical solutions of the similarity equations are obtained using the Rung...

This paper presents a numerical study of the thermal performance of fins mounted on the bottom wall of a horizontal channel and cooled with either pure water or an Al2O3-water nanofluid. The bottom wall of the channel is heated at a constant temperature and cooled by mixed convection of laminar flow at a relatively low temperature. The results of the numerical simulation indicate that the heat ...

To fill the existing literature gap, numerical solutions for oblique stagnation-point flow of Cu-Al2O3/H2O hybrid nanofluid past a shrinking surface are computed and analyzed. The computation, using similarity transformation bvp4c solver, results in dual solutions. Stability analysis then shows that first solution is stable with positive smallest eigenvalues. Besides that, addition Al2O3 nanopa...

in this paper, convection heat transfer of al2o3-water nanofluid turbulent flow through internally ribbed tubes with different rib shapes (rectangular, trapezoidal and semi-circular) is numerically investigated. for each rib shape, the optimum geometric ratio and volume fraction were calculated using entropy generation minimization technique. the governing equations in steady state and axisymme...

Abstract In this paper, multi-objective optimization (MOO) of Al2O3-water nanofluid flow in microchannel heat sinks (MCHS) with triangular ribs is performed using Computational Fluid Dynamics (CFD) techniques and Non-dominated Sorting Genetic Algorithms (NSGA II). At first, nanofluid flow is solved numerically in various MCHS with triangular ribs using CFD techniques. Finally, the CFD data will...

Nanoparticles have proven to be effective in sensible and latent heat exchanges alike. Applications of nanoparticles phase change processes are associated with migration resuspension upon which our existing knowledge is very limited. This work experimentally investigates the ratio, stability during change. Knowledge on ratio essential gauge thermal lubricative enhancements subsequent processes....

Nanofluids have great potential to improve the heat transfer properties of liquids, as demonstrated by recent studies. This paper presents a novel idea utilizing nanofluid. It analyzes performance HVAC (Heating Ventilation Air Conditioning) system using high-performance fluid (water-glycol nanofluid with nanoparticles Al2O3), in university campus Lecce, Italy. The work describes dynamic model b...

The effect of thermal and solutal buoyancy induced by a discrete source of heat and mass transfer in a square duct under the influence of magnetic field, especially at the turbulent regime for the first time is reported. Al2O3/water nanofluid is used with constant heat flux from three discrete heat sources. In the present study, the effects of Reynolds number (100 to 3000), particle volume frac...

Nanofluid flow has acquired various interesting dimensions with the advent of several novel approaches to studying thermophysical properties. The present work focuses on a comparative study clear viscous and nanofluid (EG?Al2O3, EG?Zr, H2O?Al2O3, H2O?Zr) in two-phase inclined channel saturated porous medium presence thermal radiation, species diffusion, Darcy dissipation effects. controlling eq...

This numerical study investigates the improvement of transient heat transfer in a plain tube using hybrid nanofluids consisting solid particles and twisted tapes with elliptical cuts, under non-uniform flux conditions. The analysis includes calculation Bejan number entropy production. Different working fluids, including water, CuO/water nanofluid, nanofluid 2% volume concentration Al2O3-Cu/wate...