Abstract In this paper, convective heat transfer of Fe 3 O 4 –carbon nanotubes (CNTs) hybrid nanofluid was studied in a horizontal small circular tube under influence annular magnets. The pipe has an inner diameter mm and length 1.2 m. Heat characteristics the –water were examined for many parameters, such as nanoparticle volume fraction range 0.4–1.2% Reynolds number 476–996. order to increase...

Carbon nanomaterials are of great interest for next generation nanofluids. nanotubes and graphene are, in particular, highly thermally conductive their use as thermal fluid is gaining momentum among the research community. This work investigates performance nanoplatelet (GnP)-nanofluid multi-walled carbon nanotube (MWCNT)-nanofluid by using a concentric pipe heat exchanger. The prepared nanoflu...

a Young Researchers Club, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran b Department of Mechanical Engineering, University of British Columbia Vancouver, Canada Forced convection boundary layer magneto-hydrodynamic (MHD) flow of a nanofluid over a permeable stretching plate is studied in this paper. The effects of suction-injection and viscous dissi 1 pation are taken into accoun...

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....

In this paper, the natural convection heat transfer of Al2O3-EG-water nanofluid in a rectangular cavity which is heated from the bottom and is cooled from the top has been investigated numerically. The governing equations for a Newtonian fluid have been solved numerically with a finite volume approach using the SIMPLER algorithm. The main focus of the current study is on the effects of variable...

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...

BACKGROUND AND OBJECTIVES Bacterial resistance to conventional antibiotics has become a widespread public health problem. The aim of this study was to investigate the influence of zinc oxide nanoparticles (ZnO NPs) on the antibacterial activity of several conventional antibiotics against Pseudomonas aeruginosa. MATERIALS AND METHODS ZnO NPs were prepared by solvothermal method and dispersed i...

objective(s): this study aims to evaluate and predict the thermal conductivity of iron oxide nanofluid at different temperatures and volume fractions by artificial neural network (ann) and correlation using experimental data. methods: two-layer perceptron feedforward artificial neural network and backpropagation levenberg-marquardt (bp-lm) training algorithm are used to predict the thermal cond...

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...