Longitudinal vibration and instabilities of carbon nanotubes conveying fluid considering size effects of nanoflow and nanostructure

Oveissi, Soheil; Eftekhari, S. Ali; Toghraie, Davood

doi:10.1016/j.physe.2016.05.010

Cited by 89 publications

(18 citation statements)

References 20 publications

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“…The extension of this paper for nanofluid according previous works (Semiromi and Azimian, 2010a, 2010b; Sajadifar et al , 2016; Sun and Zhang, 2016; Afrand et al , 2016a; Esfe et al , 2016a; Toghraie et al , 2016a; Semiromi and Azimian, 2012; Toghraie et al , 2016b; Esfe et al , 2015, 2016b, 2016c, 2016d; Afrand et al , 2016b; Toghraie, 2016; Afrand et al , 2015; Noorian et al , 2014; Zarringhalam et al , 2016; Behnampour et al , 2017; Akbari et al , 2017; Gravndyan et al , 2017; Reddy et al , 2017; Sandeep, 2017; Babu and Sandeep, 2017; Koriko et al , 2017; Zadkhast et al , 2017; Nazari and Toghraie, 2017; Toghraie et al , 2016c; Rezaei et al , 2015a; Esfahani and Toghraie, 2017; Semiromi and Azimian, 2010c; Shareghi and Toghraie, 2016; Oveisi et al , 2013; Oveissi et al , 2016; Rezaei et al , 2015b; Esfe et al , 2014; Karimipour et al , 2014; Semiromi and Azimian, 2012, 2010d) affords engineers a good option for nano scale and micro scale simulation.…”

Section: Discussionmentioning

confidence: 99%

Investigation of heat transfer and fluid flow behaviors of CuO/(60:40)% ethylene glycol and water nanofluid through a serpentine milichannel heat exchanger

Toghraie

Hekmatifar

Jolfaei

2019

HFF

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Purpose This paper aims to investigate the three-dimensional (3D) numerical simulations, based on the Navier–Stokes equations and the energy equation. Forced convection of a mixture of (60:40) percent ethylene glycol and water, was used as the base fluid and CuO nanoparticles, through a serpentine minichannel. Design/methodology/approach In this simulation, a serpentine mini-channel heat exchanger was simulated. The fluid studied in this simulation was composed of a mixture of (60:40) per cent ethylene glycol and water, was used as the base fluid and CuO nanoparticles. Four slabs and three serpentines were used in this study. The serpentine section is connected to the slab. Three equidistant circular channels (1 mm in diameter) were implemented inside the slab. Findings Results show that nanoparticles increase the fluid pressure drop and by changing volume fraction of nanoparticles from 0 to 1 per cent, the pressure drop of nanofluids increases between 42and 47 per cent, for Reynolds numbers from 100 to 500. The existence of serpentine bend in the minichannel heat exchanger causes the heat transfer rate to increase. Increase the volume fraction of nanoparticles reduces the fluid temperature at the outlet of the heat exchanger. The numerical results show that in Re = 500, at the beginning of the last slab in middle channel by changing volume fraction of nanoparticles from 0 to 2 per cent, local Nusselt number 57.40 per cent increase. The existence of the serpentine bend causes the heat transfer rate to increase. Originality/value Forced convection of a mixture of (60:40) per cent ethylene glycol and water by using of 3D numerical simulations, based on the Navier–Stokes equations.

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Section: Discussionmentioning

confidence: 99%

Investigation of heat transfer and fluid flow behaviors of CuO/(60:40)% ethylene glycol and water nanofluid through a serpentine milichannel heat exchanger

Toghraie

Hekmatifar

Jolfaei

2019

HFF

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“…Also, recent developments in the vibration and instability of fluid-conveying nanotubes can be found in the works of Rezaee and Maleki (2014), Valipour et al. (2016), and Oveissi et al. (2016).…”

Section: Introductionmentioning

confidence: 99%

Nonlocal instability of cantilever piezoelectric carbon nanotubes by considering surface effects subjected to axial flow

Hosseini

Bahaadini

Jamali

2016

Journal of Vibration and Control

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In this study, the divergence and flutter instability of a cantilever piezoelectric carbon nanotube (CNT) conveying flowing fluid is investigated by considering surface effects. The size-dependent governing differential equation of a piezoelectric CNT is derived using a Newtonian method based on the Eringen nonlocal elasticity theory and in conjunction with the Euler–Bernoulli beam model. The extended Galerkin method is employed to transform the partial differential equation into a set of ordinary differential equations. The resulting eigenvalue problem is solved numerically to determine the effect of nonlocal parameter, various values of piezoelectric voltage, and surface effects on the divergence and flutter instability of a CNT conveying a fluid. Results show that by increasing the voltage from negative values to positive values, the nondimensional critical velocity of the fluid flow decreases. In addition, it should be noted that the effects of the nonlocal parameter lead to a reduction of the flutter and divergence stability of the CNT. Finally, this research can be used to design fluid-conveying nanodevices based on piezoelectric CNTs.

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“…The inspiration of the study came from the fluid equations. There have been a lot of articles in the literature to study the stability of fluid equations (for interest, see [17][18][19][20][21][22][23][24][25][26][27][28][29]).…”

Section: Introductionmentioning

confidence: 99%

Continuous Dependence on the Heat Source of 2D Large-Scale Primitive Equations in Oceanic Dynamics

Zeng

2021

Symmetry

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In this paper, we consider the initial-boundary value problem for the two-dimensional primitive equations of the large-scale oceanic dynamics. These models are often used to predict weather and climate change. Using the differential inequality technique, rigorous a priori bounds of solutions and the continuous dependence on the heat source are established. We show the application of symmetry in mathematical inequalities in practice.

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Longitudinal vibration and instabilities of carbon nanotubes conveying fluid considering size effects of nanoflow and nanostructure

Cited by 89 publications

References 20 publications

Investigation of heat transfer and fluid flow behaviors of CuO/(60:40)% ethylene glycol and water nanofluid through a serpentine milichannel heat exchanger

Investigation of heat transfer and fluid flow behaviors of CuO/(60:40)% ethylene glycol and water nanofluid through a serpentine milichannel heat exchanger

Nonlocal instability of cantilever piezoelectric carbon nanotubes by considering surface effects subjected to axial flow

Continuous Dependence on the Heat Source of 2D Large-Scale Primitive Equations in Oceanic Dynamics

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