Analysis of heat transfer in SWCNTs-ethylene glycol-based nanofluid past a vertical complex wavy surface

Shami, Sumyya; Sajid, Muhammad; Javed, Tariq

doi:10.1007/s10973-020-10535-y

Cited by 4 publications

(3 citation statements)

References 33 publications

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“…Siddiqa et al 33 reported the study of non-Newtonian Casson fluid via complex irregular surface. Recently, Shami et al 34 performed the heat transfer analysis of nanofluid flow via a vertical complex roughened surface. For nanofluid, they considered colloidal suspension of single wall carbon nanotubes (SWCNTs) in ethylene glycol base fluid.…”

Section: Introductionmentioning

confidence: 99%

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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Section: Introductionmentioning

confidence: 99%

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 major benefits of including nanoparticles to base fluid are to enhance heat transmission, effective surface area, collisions, capacity of strong heat, and interaction between the nanoparticles. Because of such importance, esteemed researchers [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42] concluded that from their observations fluid heat capacity can be improved by single and hybrid nano-additives.…”

Section: Introductionmentioning

confidence: 99%

Graphene-gold/PDMS Maxwell hybrid nanofluidic flow in a squeezed channel with linear and irregular radiations

Bhargavi

Gangadhar

Chamkha

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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The hydrothermal performance of a hybrid nanofluid made of graphene, gold/polydimethylsiloxane between two squeezing plates is discussed in this study. In the investigation of thermal transport of the flow, both linear and nonlinear thermal radiation's effects are taken into account. Bejan numbers are used to determine the system's energy efficiency. Viscous and thermal radiation effects on Maxwell hybrid nanofluid flow in a squeezing channel are incorporated to explore the outcomes. By applying similarity transformations, the set of ordinary differential equations in this case is transformed into the governing equations. With the use of the Runge–Kutta–Fehlberg technique converted system is solved numerically. Skin friction and heat transfer rates under the influence of certain oriented parameters are numerically analysed and presented in tabular form. The impacts of different factors on the temperature and velocity profiles are illustrated graphically and briefly described. Important findings include that the Bejan number raises as the radiation parameter Rd rises, but that it falls with respect to the Eckert number effect. Additionally, the skin friction values and Nusselt number in the hybrid nanofluid case are larger than in the nanofluid case. Furthermore, it has been found that the Deborah number-described stress relaxation phenomenon causes the flow field and thermal energy transfer to be less efficient when fluids are moving. There is surprisingly little research on the hybrid fluid integrated into their issues.

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“…They noted that the rate of total heat transfer enhances when harmonic wave amplitude becomes preeminent to the fundamental wave. Shami et al 39 performed the analysis of heat transfer in nanofluid flow through a complex roughened surface and considered the colloidal suspension of nanoparticles, namely single wall carbon nanotubes (SWCNTs) in ethylene glycol-based fluid. They noted that the rate of heat transfer in SWCNTs-based nanofluid enhances 98% in the case of preeminent harmonic wave amplitude and 60% in the case of preeminent fundamental wave amplitude.…”

Section: Introductionmentioning

confidence: 99%

Darcy-Forchheimer natural convection flow along a complex roughened surface

Shami

Sajid

Javed

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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The influence of complex roughened surface on the Darcy-Forchheimer natural convection flow is investigated numerically. A natural convection flow within porous medium occurs in a variety of engineering applications that include solar power collectors that are used to control the pollutant spread, cooling of nuclear reactors, and geothermal engineering. Recent research has focused on reducing skin friction drag induced by viscous forces acting on a rigid body surface as it moves through a fluid by considering roughened surface or mass transfer (mass injection or suction) at the surface. The purpose of this study is to investigate how much skin friction drag reduces by considering complex roughened surface in Darcy-Forchheimer natural convection flow. A mathematical model is obtained in the form of nonlinear PDEs by transferring surface roughness effect from boundary to governing equations and made dimensionless through suitable scaling variables. To obtain a numerical solution for resulting nonlinear PDEs, a finite difference scheme is applied. The results reveal that skin friction drag reduces by making roughened surface a complex surface and further reduces by adding the combined effects of Darcy and Forchheimer numbers also total heat transfer rate enhances by increasing the values of Darcy as well as Forchheimer numbers. These results seem novel findings in this study.

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Analysis of heat transfer in SWCNTs-ethylene glycol-based nanofluid past a vertical complex wavy surface

Cited by 4 publications

References 33 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

Graphene-gold/PDMS Maxwell hybrid nanofluidic flow in a squeezed channel with linear and irregular radiations

Darcy-Forchheimer natural convection flow along a complex roughened surface

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