Numerical investigations on the heat transfer enhancement in a wavy channel using nanofluid

Ahmed, M. A.; Shuaib, N. H.; Yusoff, Mohd Zamri

doi:10.1016/j.ijheatmasstransfer.2012.05.086

Cited by 118 publications

(30 citation statements)

References 28 publications

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“…It is observed that the addition of 10% nano-particles can enhance the heat exchange by 25%. Ahmed et al [16,17] studied numerically forced convection of flow and heat transfer enhancement in a corrugated channel using CuO nanofluid. The results show that the heat transfer increases as the volume fraction of nanoparticle increases.…”

Section: Introductionmentioning

confidence: 99%

Enhance heat transfer in the channel with V-shaped wavy lower plate using liquid nanofluids

Abed

Sopian

Mohammed

et al. 2015

Case Studies in Thermal Engineering

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a b s t r a c tThe heat transfer and flow characteristics in corrugated with V-shape lower plate using nanofluids are numerically studied. The computations are performed on uniform heat flux over a range of Reynolds number (Re) 8000-20,000. The governing equations are numerically solved in the domain by a finite volume method (FVM) using the k-ε standard turbulent model. Studies are carried out for different types of nanoparticles Al 2 O 3 ,CuO, SiO 2 and ZnO with different volume fractions in the range of 0-4%. Three different types of base fluid (water, glycerin, ethylene glycol) are also examined. Results indicated that the average Nusselt number for nanofluids is greater than that of the base liquid. The SiO 2 nanofluid yields the best heat transfer enhancement among all other type of nanofluids. Heat transfer enhancement increase with increases the volumetric concentration, but it is accompanied by increasing pressure drop values. Moreover, the average Nusselt number increases with an increase in Reynolds number and volume concentration. The SiO 2 -glycerin nanofluid has the highest Nusselt number compared with other base fluids. The present study shows that these V-shaped wavy channels have advantages by using nanofluids and thus serve as promising candidates for incorporation into efficient heat transfer devices.

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Section: Introductionmentioning

confidence: 99%

Enhance heat transfer in the channel with V-shaped wavy lower plate using liquid nanofluids

Abed

Sopian

Mohammed

et al. 2015

Case Studies in Thermal Engineering

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“…Their results revealed that integrating wavy wall and adding nanoparticle within base fluid could increase heat transfer by 50%. Ahmed and his coworkers [15,16] studied heat transfer and pressure drop of copper-water nano-fluid through corrugated channel. As the nanoparticle volume fraction and Reynolds number increase, significant increase in Nusselt number and slight increase in pressure drop was observed.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Heat Transfer Enhancement by using Al2O3/water Nanofluid in Rectangular Corrugated Channel

Tokgöz¹,

Özbolat²,

Şahi̇n³

2016

KSU J. Eng. Sci.

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ABSTRACT:In this study, effects of water-based Al2O3 nanofluids on flow characterictisc and heat transfer enhancement in rectangular corrugated channels are investigated numerically. Flow between two isothermally walls is assumed to be two-dimensional, fully developed and laminar. Phase angle effects were investigated with varying the phase angle from 180 to 0 while keeping the corrugated wall geometries fixed. Governing, momentum and energy equations are numerically solved using finite volume method based on SIMPLE algorithm. Simulations are performed for nanoparticle volume fractions between 0 to 0.08 and Reynolds number ranging from 500 to 2000. Numerical results are compared with results obtained from literature and they are in close agreement with each other. Effects of phase angle, nanoparticle volume fraction and Reynolds number on Nusselt number, friction factor and thermal performance factor are investigated.

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“…Ahmed et al [7] numerically investigated the heat transfer enhancement in a wavy channel using nanofluid. They employed single phase approach and their governing parameters were Reynolds number and volume fraction in the range of 100e800 and 0e5%, respectively.…”

Section: Introductionmentioning

confidence: 99%

Heat transfer optimization of two phase modeling of nanofluid in a sinusoidal wavy channel using Artificial Bee Colony technique

Valinataj-Bahnemiri

Ramiar

Manavi

et al. 2015

Engineering Science and Technology, an International Journal

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a b s t r a c tThe present study represents the heat transfer optimization of two-dimensional incompressible laminar flow of Al 2 O 3 -water nanofluids in a duct with uniform temperature corrugated walls. A two phase model is applied to investigate different governing parameters, namely: Reynolds number (100 Re 1000), nonofluids volume fraction (0% f 5%) and amplitude of the wavy wall (0 a 0.04 m). For optimization process, a recent spot-lighted method, called Artificial Bee Colony (ABC) algorithm, is applied, and the results are shown to be in a good accuracy in comparison with another well-known heuristic method, i.e. particle swarm optimization (PSO). The results indicate that the effect of utilizing nanoparticles and increasing Reynolds number is more intensified on growing the average Nusselt number than variations of the amplitude of the wavy wall. To prevent the worst possible heat transfer, the specific amplitude which leads to a minimum average Nusselt number is detected. The effect of using nanoparticles on thermal-hydraulic performance factor (j/f) is presented which considers both heat transfer and hydrodynamics aspects. The results showed that volume fraction has a direct and the wavy wall's amplitude has a converse effect on the thermal-hydraulic performance factor. Furthermore, an optimum value for Reynolds number is found to maximize the thermal-hydraulic performance factor.

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Numerical investigations on the heat transfer enhancement in a wavy channel using nanofluid

Cited by 118 publications

References 28 publications

Enhance heat transfer in the channel with V-shaped wavy lower plate using liquid nanofluids

Enhance heat transfer in the channel with V-shaped wavy lower plate using liquid nanofluids

Investigation of Heat Transfer Enhancement by using Al2O3/water Nanofluid in Rectangular Corrugated Channel

Heat transfer optimization of two phase modeling of nanofluid in a sinusoidal wavy channel using Artificial Bee Colony technique

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