Convective heat transfer and friction factor of aqueous Fe3O4 nanofluid flow under laminar regime

Hosseinzadeh, Mojtaba; Heris, Saeed Zeinali; Beheshti, Amir; Shanbedi, Mehdi

doi:10.1007/s10973-015-5113-z

Cited by 48 publications

(15 citation statements)

References 49 publications

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“…The reason to this issue could be traced in two fields. First, according to the performed experimental and mathematical investigations, the convective heat transfer coefficient of the SiO 2 /water nanofluid is higher than that of Fe 3 O 4 /water nanofluid (Hosseinzadeh et al, 2015). The second and more important reason is that Fe 3 O 4 /water nanofluid shows best heat transfer coefficient when placed under a magnetic field, which is investigated in several related attempts (Amani et al, 2017) and in the absence of a magnetic field, SiO 2 /water nanofluid shows better heat convection performance.…”

Section: Figure 15 Hybrid System Efficiency For All Cooling Methods Dmentioning

confidence: 99%

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An experimental investigation of a hybrid photovoltaic/thermoelectric system with nanofluid application

et al. 2017

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Section: Figure 15 Hybrid System Efficiency For All Cooling Methods Dmentioning

confidence: 99%

“…properties (Ferrouillat et al, 2011;Hosseinzadeh et al, 2015). Also, two water-based nanofluid coolants, namely SiO 2 /water and Fe 3 O 4 /water are utilized in addition to air and water coolant in order to evaluate the possible cooling and power extraction in the case of using nanofluids.…”

Section: Nanofluid Preparationmentioning

confidence: 99%

An experimental investigation of a hybrid photovoltaic/thermoelectric system with nanofluid application

et al. 2017

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“…Theoretical investigation on the effects of nanofluids has been systematically reported and well documented, which can be found in the open literature [11][12][13][14][15][16]. In addition, rigorous readers can find a comprehensive review of the last experimental studies on nanofluids in the literature such as [17,18].…”

Section: List Of Symbolsmentioning

confidence: 99%

Different modes of nanoparticle migration at mixed convection of Al2O3–water nanofluid inside a vertical microannulus in the presence of heat generation/absorption

Moshizi

Malvandi

2016

J Therm Anal Calorim

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Intensity and direction of nanoparticle migration are able to tune thermophysical properties of nanofluids to improve the thermal performance of heat exchange equipments. The intensity strongly depends on nanoparticle diameter and cannot be actively controlled while different directions of nanoparticle migration are achieved with asymmetric heating. In the current study, the mixed convective heat transfer of Al 2 O 3 -water nanofluid inside a vertical microannulus is investigated theoretically considering different modes of nanoparticle migration. The model employed for the nanoparticle-fluid mixture is able to fully account for the effects of nanoparticle slip velocity relative to the base fluid originating from the thermophoresis (nanoparticle slip velocity due to temperature gradient) and Brownian motion (nanoparticle slip velocity due to concentration gradient). To consider surface roughness in the microannulus, Navier's wall slip condition is employed at the solid-fluid interface. It is revealed that the asymmetric heating at the walls alters the orientation of nanoparticle migration and deforms the symmetry of the flow field. In addition, despite temperature-dependent buoyancy forces, concentration-dependent buoyancy forces have considerable effects on the flow fields and nanoparticle migration.

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“…And some findings have already been reported from theoretical and experimental studies of ferrofluid lubrication. Ferrofluids have lower thermal conductivity concerning metal or metal oxide nanofluid, but its controllable characteristics make it an ideal working fluid in thermal systems . Khairul et al reviewed the recent articles on ferrofluids to compare the reported characteristics of such fluids, which are critical to the fluid flow and heat transfer phenomenon.…”

Section: Introductionmentioning

confidence: 99%

A Newtonian thermal elastohydrodynamic lubrication model for ferrofluid‐lubricated involute spur gear pair

Zhao

You-qiang

Zhang

et al. 2019

Lubrication Science

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An elastohydrodynamic model of ferrofluid-lubricated involute spur gears was established, and transient thermal elastohydrodynamic lubrication (EHL) analysis was conducted using multigrid method and multigrid integral method. The transient lubricant film thickness, pressure, and friction coefficient characteristics of the spur gears were compared under different carrier fluid ferrofluids. Ester-based H01 ferrofluid was selected to further examine the lubricant film elastohydrodynamic characteristics of the involute spur gears under different loads and speeds. The results indicated that the film thickness and the inlet area pressure were the largest when hydrocarbonbased E02 ferrofluid was used for lubrication and were the smallest when esterbased ferrofluid H01 was used for lubrication. When ester-based H01 ferrofluid was used, the film thickness, the inlet area pressure, and the second pressure peak increased with the increase of speed, and the second pressure peak shifted toward the inlet area. The friction coefficient and the maximum temperature gradually decreased with the increase of speed, and the second pressure peak, the friction coefficient, and the maximum temperature gradually increased with the increase of load, while the film thickness gradually decreased. K E Y W O R D S elastohydrodynamic lubrication, ferrofluid, spur gear, thermal effect, time-varying effect

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Convective heat transfer and friction factor of aqueous Fe3O4 nanofluid flow under laminar regime

Cited by 48 publications

References 49 publications

An experimental investigation of a hybrid photovoltaic/thermoelectric system with nanofluid application

An experimental investigation of a hybrid photovoltaic/thermoelectric system with nanofluid application

Different modes of nanoparticle migration at mixed convection of Al2O3–water nanofluid inside a vertical microannulus in the presence of heat generation/absorption

A Newtonian thermal elastohydrodynamic lubrication model for ferrofluid‐lubricated involute spur gear pair

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