Journal ArticleDOI
Influence of T-semi attached rib on turbulent flow and heat transfer parameters of a silver-water nanofluid with different volume fractions in a three-dimensional trapezoidal microchannel
Habibollah Alipour,Arash Karimipour,Mohammad Reza Safaei,Davood Toghraie Semiromi,Omid Ali Akbari +4 more
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In this paper, the influence of T-semi attached rib on the turbulent flow and heat transfer parameters of a silver-water nanofluid with different volume fractions in a three-dimensional trapezoidal microchannel was explored.Abstract:
This study aimed at exploring influence of T-semi attached rib on the turbulent flow and heat transfer parameters of a silver-water nanofluid with different volume fractions in a three-dimensional trapezoidal microchannel. For this purpose, convection heat transfer of the silver-water nanofluid in a ribbed microchannel was numerically studied under a constant heat flux on upper and lower walls as well as isolated side walls. Calculations were done for a range of Reynolds numbers between 10,000 and 16,000, and in four different sorts of serrations with proportion of rib width to hole of serration width (R/W). The results of this research are presented as the coefficient of friction, Nusselt number, heat transfer coefficient and thermal efficiency, four different R/W microchannels. The results of numerical modeling showed that the fluid's convection heat transfer coefficient is increased as the Reynolds number and volume fraction of solid nanoparticle are increased. For R/W=0.5, it was also maximum for all the volume fractions of nanoparticle and different Reynolds numbers in comparison to other similar R/W situations. That's while friction coefficient, pressure drop and pumping power is maximum for serration with R/W=0 compared to other serration ratios which lead to decreased fluid-heat transfer performance.read more
Citations
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Convective heat transfer of laminar nano-fluids flow through a rectangular micro-channel with different types of baffle-corrugation
TL;DR: In this paper, a detailed numerical study has been performed to investigate the thermophysical properties of the laminar nano-fluids flow through a baffle-corrugation (plane, trapezoidal, etc.).
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Heat transfer enhancement with channel surface roughness: A comprehensive review
TL;DR: In this article , a review of the works related to heat transfer enhancement using two types of surface roughness that are ribs and corrugations is presented, which can help in improving the performance of the system.
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Thermal-hydraulic analysis of Syltherm 800 thermal oil / γ-AlOOH nanofluid in a baffled shell and tube heat exchanger equipped with corrugated helical tube with two-phase approach
TL;DR: In this article , a two phase Syltherm 800 thermal oil / γ-AlOOH nanofluid flow and heat transfer in a baffled shell and tube heat exchanger equipped with corrugated helical tube numerically.
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A review on modelling, simulation and experiment of thermal conductivity of nanofluids
Xueye Chen,Chen Yao +1 more
TL;DR: In this paper, the progress on the development of heat conductivity of nanofluids in recent 3 years is reported and the theory and experiment that are the focus of this work are analyzed and discuss.
Journal ArticleDOI
Analysis of buckling of a multi-layered nanocomposite rectangular plate reinforced by single-walled carbon nanotubes on elastic medium considering nonlocal theory of Eringen and variational approach
TL;DR: In this article, the buckling of a multi-layered nanocomposite rectangular plate reinforced by single-walled carbon nanotubes (SWCNTs) on Pasternak elastic medium subjected to in-plane loadings is investigated.
References
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Book
Numerical heat transfer and fluid flow
TL;DR: In this article, the authors focus on heat and mass transfer, fluid flow, chemical reaction, and other related processes that occur in engineering equipment, the natural environment, and living organisms.
Journal ArticleDOI
Two-equation eddy-viscosity turbulence models for engineering applications
TL;DR: In this paper, two new two-equation eddy-viscosity turbulence models are presented, which combine different elements of existing models that are considered superior to their alternatives.
Journal ArticleDOI
Hydrodynamic and heat transfer study of dispersed fluids with submicron metallic oxide particles
Bock Choon Pak,Young I. Cho +1 more
TL;DR: In this article, the authors used a Brookfield rotating viscometer to measure the viscosities of the dispersed fluids with γ-alumina (Al2O3) and titanium dioxide (TiO2) particles at a 10% volume concentration.
Journal ArticleDOI
Alteration of thermal conductivity and viscosity of liquid by dispersing ultra-fine particles. dispersion of al2o3, sio2 and tio2 ultra-fine particles
TL;DR: In this paper, the authors proposed a new algorithm called Al2O3, which is based on the SiO2-2-SiO3 algorithm, and showed that it is more efficient than SiO3 and TiO2.