Dynamic viscosity of MWCNT/ZnO–engine oil hybrid nanofluid: An experimental investigation and new correlation in different temperatures and solid concentrations

Asadi, Meisam; Asadi, Amin

doi:10.1016/j.icheatmasstransfer.2016.05.019

Cited by 188 publications

(46 citation statements)

References 22 publications

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“…They reported 132% increase in dynamic viscosity. In another experimental study, Asadi and Asadi [19] investigated the viscosity of an engine oil-based hybrid nanofluid containing MWCNT and ZnO nanoparticles over different temperatures and solid concentrations. Their results indicated that the prepared nanofluid showed Newtonian behavior.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

An experimental and theoretical investigation on the effects of adding hybrid nanoparticles on heat transfer efficiency and pumping power of an oil-based nanofluid as a coolant fluid

Asadi¹,

Asadi²,

Aberoumand³

2018

International Journal of Refrigeration

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108

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Section: Accepted Manuscriptmentioning

confidence: 99%

An experimental and theoretical investigation on the effects of adding hybrid nanoparticles on heat transfer efficiency and pumping power of an oil-based nanofluid as a coolant fluid

Asadi¹,

Asadi²,

Aberoumand³

2018

International Journal of Refrigeration

Self Cite

108

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“…Consequently, the inability to remove debris from the disk surface may cause an increase in interface roughness between the fixed and movable elements, causing an increase in wear weight loss. However, the shear thinning behavior of the NAEO at high rotating speeds may partly solve the problems described above [9,19,22]. Therefore, the search for the optimal weight fraction of NAEO must include a wear test to confirm the optimal performance of the specific weight fraction.…”

Section: Resultsmentioning

confidence: 99%

“…The nano-additives in nano-oils comprise various metal oxide nanoparticles (Al 2 O 3 , CuO, TiO 2 , and ZnO) [7][8][9][10][11], metal nanoparticles (Cu, Ag) [12][13][14][15], non-metal/metal oxide nanoparticles (graphite, boric acid, diamond, MWCNT/multi-walled carbon nanotubes) [13,14,[16][17][18], and hybrid nanoparticles (MWCNT/ZnO and SiO 2 -MWCNTs) [19,20]. Most of the literature shows that nano-oils can reduce friction coefficients, power losses, wear, wear resistance, and can also improve the…”

Section: Introductionmentioning

confidence: 99%

Performance Assessment and Scooter Verification of Nano-Alumina Engine Oil

Lue

Hung

et al. 2016

Applied Sciences

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Abstract:The performance assessment and vehicle verification of nano-alumina (Al 2 O 3 ) engine oil (NAEO) were conducted in this study. The NAEO was produced by mixing Al 2 O 3 nanoparticles with engine oil using a two-step synthesis method. The weight fractions of the Al 2 O 3 nanoparticles in the four test samples were 0 (base oil), 0.5, 1.5, and 2.5 wt. %. The measurement of basic properties included: (1) density; (2) viscosity at various sample temperatures (20-80 • C). A rotary tribology testing machine with a pin-on-disk apparatus was used for the wear test. The measurement of the before-and-after difference of specimen (disk) weight (wear test) indicates that the NAEO with 1.5 wt. % Al 2 O 3 nanoparticles (1.5 wt. % NAEO) was the chosen candidate for further study. For the scooter verification on an auto-pilot dynamometer, there were three tests, including: (1) the European Driving Cycle (ECE40) driving cycle; (2) constant speed (50 km/h); and (3) constant throttle positions (20%, 40%, 60%, and 90%). For the ECE40 driving cycle and the constant speed tests, the fuel consumption was decreased on average by 2.75%, while it was decreased by 3.57% for the constant throttle case. The experimental results prove that the engine oil with added Al 2 O 3 nanoparticles significantly decreased the fuel consumption. In the future, experiments with property tests of other nano-engine oils and a performance assessment of the nano-engine-fuel will be conducted.

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“…Similarly, the exact solution of Maxwell nanofluid containing CNTs in four types of base fluid was investigated in [19]. Asadi et al [20][21][22][23] conducted some experimental study on the dynamic viscosity of different nanofluids. They found that the viscosity of MWCNTs nanofluids is considerably higher than that of the base fluids.…”

Section: Literature Reviewmentioning

confidence: 99%

MHD Thin Film Flow and Thermal Analysis of Blood with CNTs Nanofluid

et al. 2019

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Our main objective in the present work is to elaborate the characteristics of heat transport and magneto-hydrodynamics (MHD) finite film flow of human blood with Carbon Nanotubes (CNTs) nanofluids over a stretchable upright cylinder. Two kinds of CNTs nanoparticles, namely (i) SWCNTs (single walled carbon nanotubes) and (ii) MWCNTs (multi walled carbon nanotubes), are used with human blood as a base liquid. In addition, a uniform magnetic field (B) has been conducted perpendicularly to the motion of nanoliquid. The transformation of the partial differential structure into a non-linear ordinary differential structure is made by using appropriate dimensionless quantities. The controlling approach of the Homotopy analysis method (HAM) has been executed for the result of the velocity and temperature. The thickness of the coating film has been kept variable. The pressure distribution under the variable thickness of the liquid film has been calculated. The impacts of different variables and rate of spray during coating have been graphically plotted. The coefficient of skin friction and Nusselt number have been presented numerically. In addition, it is noticed that the thermal field of a nanoliquid elevates with rising values of ϕ and this increase is more in SWCNTs nanofluid than MWCNTs nanofluid.

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Dynamic viscosity of MWCNT/ZnO–engine oil hybrid nanofluid: An experimental investigation and new correlation in different temperatures and solid concentrations

Cited by 188 publications

References 22 publications

An experimental and theoretical investigation on the effects of adding hybrid nanoparticles on heat transfer efficiency and pumping power of an oil-based nanofluid as a coolant fluid

An experimental and theoretical investigation on the effects of adding hybrid nanoparticles on heat transfer efficiency and pumping power of an oil-based nanofluid as a coolant fluid

Performance Assessment and Scooter Verification of Nano-Alumina Engine Oil

MHD Thin Film Flow and Thermal Analysis of Blood with CNTs Nanofluid

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