nanofluid is a new class of heat transfer fluids engineered by dispersing metallic or non-metallic nanoparticles with a typical size of less than 100 nm in the conventional heat transfer fluids.this article aims to investigate the overall and convection heat transfer coefficient and nusselt number of al2o3-water nanofluid flowing in a horizontal double pipe heat exchanger under turbulent flow (...

The present work is concerned with the experimental analysis of thermal and hydraulic performance Al2O3−H2O nanofluid flow in dimpled rib arc pattern a square duct. Alumina consists nanoparticles having size 30 nm. Reynolds number Renum studied duct range from 5000 to 26,000. nanoparticle volume fraction (ϕnp) ranges 1.5% 4.5%, ratio dimpled-arc-rib-height print-diameter HAD/Pd 0.533 1.133, dim...

Nb-B-Al-O nanocomposite films with different power of Al2O3 were successfully deposited on the Si substrate via multi-target magnetron co-sputtering method. The influences of Al2O3's content on structure and properties of obtained nanocomposite films through controlling Al2O3's power were investigated. Increasing the power of Al2O3 can influence the bombarding energy and cause the momentum tran...

The field synergy study is carried out using three oxide nanofluids impinging circular jet on the horizontal disc to analyse synergetic interaction of cooling processes between temperature and flows fields. h eat transfer effect o f nanofluid examined by rising Reynolds number nanoparticle concentration depending number. For impinged process, scale flow speed decayed with increase Hence, it con...

Nanofluids have a solid-fluid interface that affects their thermal properties during heat transfer processes. In this study, nanolayer and interfacial resistance (TIR) at the are discussed to determine role in enhancement of conductivity Al2O3-CO2 nanofluid. The current work focuses on molecular dynamics simulations study TIR formed CO2 molecules around Al2O3 nanoparticle (np) for supercritical...

ALD high-κ dielectrics and TiN metal-gate were successfully incorporated in both Si and Si0.7Ge0.3 surface-channel pMOSFETs. The high-κ gate dielectrics used included Al2O3 /HfAlOx /Al2O3, Al2O3 /HfO2 /Al2O3 and Al2O3. The Si transistors with Al2O3 /HfAlOx /Al2O3 showed a sub-threshold slope of 75 mV/dec. and a density of interface states of 3×10 cmeV. No obvious degradation of the Si channel h...

Improving scientific knowledge around the manufacturing of nanocomposites is key since their performance spreads across many applications, including those in meso/micro products. Powder metallurgy a reliable process for producing these materials, but usually, machining postprocessing required to achieve tight tolerances and quality requirements. When processing cutting force evolution determine...

The fabrication, characterization, and decoration with metallic nanoparticles of nanostructures such as nanowhiskers, nanodendrites, and fractal-like nanotrees on insulator substrates by electron-beam-induced deposition (EBID) are reviewed. Nanostructures with different morphologies of whiskers, dendrites, or trees are fabricated on insulator (Al2O3 or SiO2) substrates by EBID in transmission e...