Viscosity of carbon nanotube/water nanofluid

Jabbari, Fatemeh; Rajabpour, Ali; Saedodin, Seyfolah

doi:10.1007/s10973-018-7458-6

Cited by 46 publications

(28 citation statements)

References 52 publications

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“…The Lennard-Jones (LJ) potential was chosen for intermolecular interactions between the water molecules with each other and with CNT or graphene. The used LJ parameters in this simulation are listed in Table 3 [10]. Tersoff potential is used as the potential governing the carbon atoms in CNT and graphene nanoparticles.…”

Section: Simulation Processes Detailsmentioning

confidence: 99%

“…Increasing computers power and continuous improvement of simulation techniques have made the molecular dynamics simulation as a beneficial tool in predicting most of the properties of materials from a model of a statistical physics experiment [7]. The features and advantages of molecular dynamics simulation make it an extremely efficient and flexible tool that can be used to measure thermal properties at the nanoscale and the atomic level [8][9][10]. For this reason, many researchers have utilized MD simulation to study the thermal properties of systems at the nanoscale such as nanofluids [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

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Effect of water/carbon interaction strength on interfacial thermal resistance and the surrounding molecular nanolayer of CNT and graphene flake

Jabbari

Rajabpour

Saedodin

2019

Journal of Molecular Liquids

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Heat transfer at the liquid/solid interface, especially at the nanoscale, has enormous importance in nanofluids. This study investigates liquid/solid interfacial thermal resistance and structure of the formed molecular nanolayer around a carbon-based nanoparticle. Employing non-equilibrium molecular dynamics simulation and thermal relaxation method, the nanofluid systems with different nanoparticle diameters and different surface wettability were investigated. Simulation results show that carbon nanotubes (CNTs) with a smaller diameter attract more value of the base fluid and lead to a reduced Kapitza resistance. It was found that the thickness of the nanolayer around the nanoparticle is independent of the water/carbon interaction strength. Also, the value of the Kapitza resistance decreases with increasing the interaction strength. Ultimately, a correlation was proposed for the thermal resistance of CNT/water and graphene/water nanofluids in terms of wettability intensity of nanoparticle surface.The proposed correlation in addition to fitting to simulation results can cover the physical conditions of the system.Corresponding authors: * Rajabpour@eng.ikiu.ac.ir † s_sadodin@semnan.ac.ir

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Section: Simulation Processes Detailsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of water/carbon interaction strength on interfacial thermal resistance and the surrounding molecular nanolayer of CNT and graphene flake

Jabbari

Rajabpour

Saedodin

2019

Journal of Molecular Liquids

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“…Again, TiO2-SiO2/ water-EG based hybrid nanofluids were also prepared by Hamid et al, [47] using the same technique for various concentrations and mixing ratios of nanoparticles. This double-stage approach for synthesizing carbon nanotubes containing nanofluids was also followed by several other researchers [48][49][50][51].…”

Section: Preparation Methods Of Hybrid Nanofluidsmentioning

confidence: 94%

Preparation Methods and Challenges of Hybrid Nanofluids: A Review

Urmi

Shafiqah

Rahman

et al. 2020

ARFMTS

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The recent studies on nanotechnology have reported rapid development of nanofluids in various aspects due to the enhanced thermophysical and heat transfer properties of nanofluids. This paper reviews the preparation methods and some challenging issues of hybrid nanofluids during the Preparation of hybrid nanofluids. One-step and two-step are mainly the preparation methods of hybrid nanofluids. Compared to the one-step method, the two-step method is a widely used technique for preparing nanofluids due to its simplicity, whereas this technique has a complexity of achieving stability of hybrid nanofluids. On the contrary, the one-step is very flexible for achieving uniformity of nanofluids with comparatively high production cost. Some researchers followed various techniques such as surfactant addition, surface treatment, and pH modification for preparing a durable nanofluid. However, these methods also have their limitation, such as degrading the thermal attributes of hybrid nanofluids. So, future studies need to address these challenges along with the cost analysis during preparing the hybrid nanofluids.

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“…The Darcy–Forchheimer three‐dimensional (3D) nanoliquid flow due to a rotating disc with Arrhenius activation energy was examined by Asma et al 4 Muhammad et al 5 considered the Darcy–Forchheimer 3D flow of carbon–water nanomaterials under thermal convective condition. The viscosity of multiwalled carbon nanotubes (MWCNTs)–water nanofluid was investigated by simulating the equilibrium dynamical model by Jabbari et al 6 They reported that there is a growth in viscosity with increases in nanoparticle volume fraction at low temperature. Chamkha et al 7 investigated Fe 3 O 4 –water nanofluid flow over a moveable plane in a parallel stream with high suction.…”

Section: Introductionmentioning

confidence: 99%

Mixed convection hybrid nanofluids flow of MWCNTs–Al₂O₃/engine oil over a spinning cone with variable viscosity and thermal conductivity

Tulu

Ibrahim

2021

Heat Trans

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This work analyzed the effects of variable viscosity and thermal conductivity, with mixed convection, thermal radiation and viscous dissipation effects, on multiwalled carbon nanotubes (MWCNTs)–aluminum oxide (Al2O3)/engine oil hybrid nanofluid flow due to a vertically inverted spinning cone embedded in a porous medium. Using suitable similarity transformation, the boundary layer fluid flow governing equations are transformed into dimensionless systems of coupled nonlinear ordinary differential equations. Then, the solutions are obtained numerically employing the spectral relaxation method. The influences of involved parameters are examined, and the results are presented with graphs and tables. The obtained results disclose that both the tangential and azimuthal skin friction coefficients increase with increasing values of temperature‐dependent viscosity and mixed convection parameters. The local heat transfer rate reduces with increasing values of the Eckert number and variable thermal conductivity parameter, whereas it enhances with greater values of the thermal radiation parameter. Generally, hybrid nanofluids of (MWCNTs–Al2O3)/engine oil show better flow distributions with good stability of thermal properties than MWCNTs/engine oil and Al2O3/engine oil mono‐nanofluids.

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Viscosity of carbon nanotube/water nanofluid

Cited by 46 publications

References 52 publications

Effect of water/carbon interaction strength on interfacial thermal resistance and the surrounding molecular nanolayer of CNT and graphene flake

Effect of water/carbon interaction strength on interfacial thermal resistance and the surrounding molecular nanolayer of CNT and graphene flake

Preparation Methods and Challenges of Hybrid Nanofluids: A Review

Mixed convection hybrid nanofluids flow of MWCNTs–Al₂O₃/engine oil over a spinning cone with variable viscosity and thermal conductivity

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Viscosity of carbon nanotube/water nanofluid

Cited by 46 publications

References 52 publications

Effect of water/carbon interaction strength on interfacial thermal resistance and the surrounding molecular nanolayer of CNT and graphene flake

Effect of water/carbon interaction strength on interfacial thermal resistance and the surrounding molecular nanolayer of CNT and graphene flake

Preparation Methods and Challenges of Hybrid Nanofluids: A Review

Mixed convection hybrid nanofluids flow of MWCNTs–Al2O3/engine oil over a spinning cone with variable viscosity and thermal conductivity

Contact Info

Product

Resources

About

Mixed convection hybrid nanofluids flow of MWCNTs–Al₂O₃/engine oil over a spinning cone with variable viscosity and thermal conductivity