Influence of nonlinear radiation on natural convection flow of carbon nanotubes suspended in water-based fluid along a vertical wavy surface

Ghaffari, Abuzar; Mustafa, Irfan; Javed, Tariq

doi:10.1088/1402-4896/ab23b8

Cited by 11 publications

(7 citation statements)

References 42 publications

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“…Thermophysical properties of EG base fluid and CNTs at room temperature. 19,36 Properties SWCNT EG c p (J kg 21…”

Section: Mathematical Formulationmentioning

confidence: 99%

“…The thermophysical properties of nanofluid depend on nanoparticle volume fraction ϖ . The detail of involving parameters along with units are given in appendix. The particle loading-dependent relations for thermophysical properties are expressed as 19 :…”

Section: Mathematical Formulationmentioning

confidence: 99%

“…Mustafa et al 18 considered the effects of magnetohydrodynamic and heat generation on gravity driven nanofluid flow through a vertical irregular surface. Ghaffari et al 19 reported the study of nonlinear thermal radiation on gravity driven CNTs-based nanofluid flow through a vertical irregular surface. Mustafa et al 20 performed numerical study for the cobalt-based ferrofluid flow through irregular surface placed in non-Darcy porous medium.…”

Section: Introductionmentioning

confidence: 99%

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Natural convection flow of CNTs-ethylene glycol based micropolar nanofluid along a complex wavy surface

Shami

Sajid

Javed

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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The primary goal of this study is to perform the analysis of heat transfer in free convection flow of micropolar nanofluid along a complex roughened surface. A micropolar nanofluid is made by adding nanoparticles namely SWCNTs (single-walled carbon nanotubes) in ethylene glycol (EG) base micropolar fluid. A mathematical model for micropolar nanofluid can be developed in terms of nonlinear partial differential equations by extending Navier-Stokes equations along with micro inertia effects, angular momentum equation and Tiwari and Das model. After using the suitable transformation, the resulting nonlinear PDEs are made dimensionless and solved numerically using finite difference scheme. Micropolar nanofluids have a capability to improve the thermophysical properties and heat transportation capacity instead of base fluids. The impacts of numerous pertinent parameters on velocity, microrotation and temperature profiles also on physical quantities namely wall couple stress, local and average Nusselt numbers, total heat transfer and skin friction coefficient are discussed graphically. It is noted that total heat transfer rate becomes high in case of dominant amplitude of harmonic wave as compared to fundamental. It is also noted that total heat transfer rate decreases by increasing micropolar parameter and can be enhanced by adding SWCNTs in EG based micropolar fluid and that enhancement is reported approximately 27 and 26% in dominant amplitude of fundamental and harmonic waves as compared to ethylene glycol fluid.

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“…Thermophysical properties of EG base fluid and CNTs at room temperature. 19,36 Properties SWCNT EG c p (J kg 21…”

Section: Mathematical Formulationmentioning

confidence: 99%

Section: Mathematical Formulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Natural convection flow of CNTs-ethylene glycol based micropolar nanofluid along a complex wavy surface

Shami

Sajid

Javed

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…Besides, the thermophysical properties of copper-water nanofluids ρ nf , µ nf , (ρβ) nf , (ρC p ) nf , and k nf are formulated explicitly as functions of the nanoparticles volume fraction χ and other characteristics by the following expressions [37][38][39][40][41][42][43]:…”

Section: Mathematical Formulationmentioning

confidence: 99%

Numerical exploration of mixed convection heat transfer features within a copper-water nanofluidic medium occupied a square geometrical cavity

Zaydan¹,

Wakif²,

Essaghir³

et al. 2021

Math. Model. Comput.

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The phenomenon of mixed convection heat transfer in a homogeneous mixture is deliberated thoroughly in this study for cooper-water nanofluids flowing inside a lid-driven square cavity. By adopting the Oberbeck-Boussinesq approximation and using the single-phase nanofluid model, the governing partial differential equations modeling the present flow are stated mathematically based on the Navier--Stokes and thermal balance formulations, where the important features of the scrutinized medium are presumed to remain constant at the cold temperature. Note here that the density quantity in the buoyancy body force is a linear temperature-dependent function. The characteristic quantities are computed realistically via the commonly used phenomenological laws and the more accurate experimental correlations. A feasible non-dimensionalization procedure has been employed to derive the dimensionless conservation equations. The resulting nonlinear differential equations are solved numerically for realistic boundary conditions by employing the fourth-order compact finite-difference method (FOCFDM). After performing extensive validations with the previously published findings, the dynamical and thermal features of the studied convective nanofluid flow are revealed to be in good agreement for sundry values of the involved physical parameters. Besides, the present numerical outcomes are discussed graphically and tabularly with the help of streamlines, isotherms, velocity fields, temperature distributions, and local heat transfer rate profiles.

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“…Important physics, primary understanding, and beneficial contributions to the analysis of convection phenomena in fluid flow along wavy texture are given in [24][25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Impact of wavy texture and hybridity of nanofluid on heat transfer augmentation over the frustum of cone geometry

et al. 2021

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In this article, the impact of water-based hybrid nanofluid on heat transfer characteristics along the wavy frustum of the cone is examined. We considered hybrid nanofluid containing and nanoparticles. Non-similar form of the constitutive equations is obtained by using an appropriate set of transformations and results are achieved by employing transformed into compact non-similar form and are solved by the famous numerically implicit finite difference scheme known as Keller-box technique. The influence of the hybrid nanoparticles? volume fraction, frustum of cone half-angle and the wavy texture parameters on the Nusselt number and skin friction are scrutinized and comparison is made between the wavy frustum of the cone and flat frustum of the cone through numerical data. It is observed that the rise in the truncated cone half-angle leads to an increase in skin friction and Nusselt number. Titania - water nanofluid has lower heat transfer rates as compared to copper-titania hybrid nanofluid. The increasing of the truncated cone half-angle enhances the heat transfer rates. Generally, the results established from this analysis can be used as a benchmark for improving the natural convection heat transfer performance along the frustum of cone wavy texture.

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Influence of nonlinear radiation on natural convection flow of carbon nanotubes suspended in water-based fluid along a vertical wavy surface

Cited by 11 publications

References 42 publications

Natural convection flow of CNTs-ethylene glycol based micropolar nanofluid along a complex wavy surface

Natural convection flow of CNTs-ethylene glycol based micropolar nanofluid along a complex wavy surface

Numerical exploration of mixed convection heat transfer features within a copper-water nanofluidic medium occupied a square geometrical cavity

Impact of wavy texture and hybridity of nanofluid on heat transfer augmentation over the frustum of cone geometry

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