Fully developed mixed convection in horizontal and inclined tubes with uniform heat flux using nanofluid

Akbari, M.; Behzadmehr, A.; Shahraki, Farhad

doi:10.1016/j.ijheatfluidflow.2007.11.006

Cited by 104 publications

(47 citation statements)

References 27 publications

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“…Literature review suggests that a very few experimental and numerical investigations have been carried out to date on the laminar and turbulent nanofluid flow in an inclined or a vertical pipe [4][5][6]. And, we are the first to have investigated the nanofluids flow inside an inclined pipe in transition regime considering a smaller size but higher concentrations (mentioned above) of nanoparticles with the Brownian motion.…”

Section: Introductionmentioning

confidence: 94%

Transition of nanofluids flow in an inclined heated pipe

Saha

Paul

2017

International Communications in Heat and Mass Transfer

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A numerical investigation is carried out to investigate the transitional flow behaviour of nanofluids flow in an inclined pipe using both single and multi-phase models. Two different nanofluids are considered, and these are Al 2 O 3 -water and TiO 2 -water nanofluids. Moreover, SST − transitional model is implemented to study the nanofluids flow in inclined pipe.Gravitational force is also adopted by considering Boussinesq approximation in the momentum equation.Results reveal that Buoyancy force play a significant role on the degeneration of heat transfer rate with the increase of Reynolds number for different inclination angles.It indicates that mixed convection has opposite effect on the inclined pipe than the forced convection on the horizontal pipe. Moreover, some deformation of the flow and temperature fields near the upstream region is observed with the increase of inclination angle due to Buoyancy force.

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Section: Introductionmentioning

confidence: 94%

Transition of nanofluids flow in an inclined heated pipe

Saha

Paul

2017

International Communications in Heat and Mass Transfer

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“…Their simulation is unique from the point of view of including the fluid temperature and the structure of nanoparticle clusters in the thermal conductivity [11]. The resulting model expressed as 2 …”

Section: Brownian Motionmentioning

confidence: 99%

“…Scattering solid particles into liquids is not a new idea, since it can be traced back to Maxwell's theoretical work of 1873 [2]. Maxwell considered suspended particles which had dimensions of micrometre and millimetre level.…”

Section: Introductionmentioning

confidence: 99%

A Review of Thermal Conductivity Models for Nanofluids

Aybar

Sharifpur

Azizian

et al. 2015

Heat Transfer Engineering

208

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“…The mixture model is generally accurate for nanofluid analyses [27,28]. In this study, the flow was assumed to be laminar, steady and incompressible with constant thermo-physical properties.…”

Section: Governing Equationsmentioning

confidence: 99%

Effect of Magnetic Field on Entropy Generation in a Microchannel Heat Sink with Offset Fan Shaped

Nasiri

Rashidi

Lorenzini

2015

Entropy

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Abstract:In this study, convection flow in microchannel heat sink with offset fan-shaped reentrant cavities in sidewall filled with Fe 3 O 4 -water is numerically investigated. The effects of changing some parameters such as Reynolds number and magnetic field are considered. The nanofluid flow is laminar, steady and incompressible, while the thermo-physical properties of nanoparticles were assumed constant. A finite volume method and two phase mixture models were used to simulate the flow. The obtained results show that the frictional entropy generation increases as Reynolds number increases, while a reverse trend is observed for thermal entropy generation. By applying a non-uniform magnetic field, the entropy generation due to heat transfer decreases at first and then increases. When using the uniform magnetic field, the frictional entropy generation and thermal entropy generation is negligible. For all studied cases, the total entropy generation decreases using non-uniform magnetic fields. The results indicate that by increasing the magnetic field power, the total entropy generation decreases.

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Fully developed mixed convection in horizontal and inclined tubes with uniform heat flux using nanofluid

Cited by 104 publications

References 27 publications

Transition of nanofluids flow in an inclined heated pipe

Transition of nanofluids flow in an inclined heated pipe

A Review of Thermal Conductivity Models for Nanofluids

Effect of Magnetic Field on Entropy Generation in a Microchannel Heat Sink with Offset Fan Shaped

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