Heat Transfer Analysis of MHD Water Functionalized Carbon Nanotube Flow over a Static/Moving Wedge

Khan, Waqar A.; Culham, Richard; Haq, Rizwan Ul

doi:10.1155/2015/934367

Cited by 31 publications

(21 citation statements)

References 42 publications

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“…Later, he extended his work by incorporating varying heat source [21]. Khan et al [22] explored the heat transfer impact past a moving wedge. Reddy et al [23] studied the MHD flow past non-linear stretching sheet.…”

Section: Introductionmentioning

confidence: 99%

Interaction of single and multi walls carbon nanotubes in magnetized-nano Casson fluid over radiated horizontal needle

et al. 2020

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The consequences of thermally radiative magneto-nano Casson fluid towards thin needle is executed in this investigation. The problem has been modeled mathematically under the Navier slip effect. The Prandtl boundary-layer expressions are framed and treated numerically after the application of similarity variables. Employing shooting method together with Runge-Kutta (R-K) method, the dimensionless equations are solved. The influence of various pertinent controlled dimensionless variables on momentum and temperature along with quantities related to engineering values specifically shear stress and rate of energy transfer are scrutinized through graphical plots. Multi-wall carbon nanotubes (MWCNTs) act as friction reducing factor. Needle surface transfers heat more from the fluid compared to parabolic revolution. Multi-wall carbon nanotubes transfers more heat from the fluid rather than the single-wall carbon nanotubes (SWCNTs). The heat transfer is more in parabolic surface compared to cylindrical surface and SWCNTs have superior values than MWCNTs. Numerical solutions are matched with the published material and perceived to be in a good agreement. Keywords Casson nanofluid • Magnetohydrodynamics • Rheological fluid • Thermal radiation • Thin needle List of symbols e ij (i, j) Component of the deformation rate f Thermophysical properties of the water f(η) Dimensionless velocity k f Thermal conductivity k* Coefficient of mean absorption L Characteristic length nf Thermophysical properties of the nanofluid Pr Prandtl number P y Yield stress of the liquid q 0 Characteristic heat flux q w Wall heat flux R Radiation parameter Re Reynolds number u Components of velocity parallel to x direction (m/s) u w Stretching velocity (m/s) U 0 Characteristic velocity (m/s) v Radial velocity (m/s) T Local temperature of the nanofluid (K) T Dimensionless temperature T ∞ Ambient temperature Greek symbols nf Thermal diffusivity of the nanofluid (m 2 s −1) Casson parameter σ* Constant of Stefan-Boltzmann Product of the component of deformation rate with itself c Critical value of this product based on the non-Newtonian model nf Density of the nanofluid (kg/m 3) nf Dynamic viscosity of the nanofluid (PA s) μ B Plastic dynamic viscosity of the non-Newtonian fluid (PA s)

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Section: Introductionmentioning

confidence: 99%

Interaction of single and multi walls carbon nanotubes in magnetized-nano Casson fluid over radiated horizontal needle

et al. 2020

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“…Karami et al focused on new applications of carbon nanotubes on low‐temperature and direct absorption in solar collectors. Khan et al provided the numerical solutions of water‐MWCNT and water‐SWCNT based nanofluid flow over static/moving wedge and noticed an elevation in the values of rates of heat transfer and rates of velocity as magnetic field parameter rises. Haq et al investigated MHD flow and heat transfer of SWCNTs and MWCNTs with base fluids as (engine oil, water, and ethylene glycol) over stretching sheet and revealed that the values of Nusselt number and rates of velocity is higher in engine oil‐based

CNTs

than the ethylene glycol‐based

CNTs .

Sabiha et al theoretically examined specific heat, viscosity, and thermal conductivity of

SWCNT

with water‐based nanofluids in presence of sodium dodecyl sulfate with volume concentrations (0.05%–0.25%) and found that the thermal conductivity is maximum enhanced of 36.39% compared with water for 0.25%.…”

Section: Introductionmentioning

confidence: 99%

Effect of SWCNTs and MWCNTs Maxwell MHD nanofluid flow between two stretchable rotating disks under convective boundary conditions

Sreedevi¹,

Reddy²

2019

Heat Trans. Asian Res.

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The aim of the current analysis is to investigate heat and mass transfer characteristics of single and multi-walled water-based carbon nanotubes Maxwell nanofluid flow between continuously rotating stretchable disks under the sway of chemical reaction and radiation. Boundary conditions of the convective type of temperature are employed at both lower and upper rotating disks in the preparation. Similarity variables are employed to transform the governing partial differential equations into the nonlinear ordinary differential equations. The computational finite element method is applied to solve this nonlinear system of equations along with boundary conditions. The sway of different admissible parameters on the profiles of concentration, temperature, and velocity are inspected and revealed through graphs. Furthermore, the numerical solutions for rates of temperature, concentration, and rates of velocity are depicted in tabular form. It is revealed that temperature sketches deteriorate with augmented values of Deborah number at both upper and lower disks of single-walled carbon nanotubes and multi-walled carbon nanotubes with water-based Maxwell nanofluids. K E Y W O R D S carbon nanotubes, chemical reaction, convective boundary conditions, finite element method, Maxwell nanofluids, thermal radiation

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“…Hussanan et al [11] examined the e ect of some nano uids on accelerated plate with magnetic eld and a porous medium. The water functionalized carbon nanotube ow was analyzed over a moving/static wedge in the magnetic eld by Khan et al [12]. Haq et al [13] explored the e ects of magnetic eld with water functionalized metallic nanoparticles for squeezed ow over a sensor surface.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer on Fractionalized Micropolar Nanofluid over Oscillating Plate via Caputo-Fabrizio Fractional Operator

Yıldırım

Abro

2019

Scientia Iranica

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Nano uids and the enhancement of heat transfer in real systems have proved to be a widely researched area of nanotechnology; other areas of particular interest to researchers include the improvement of thermal conductivity, thermophoresis phenomenon, dispersion of nanoparticles volume fraction, and few others. Based on the touch of nanotechnology, this study investigates the analytic and mathematical performance of micropolar nano uid in the enhancement of heat transfer. The base uid is taken for the purpose of thermal conductivity subject to two types of nanoparticles: copper and silver. The mathematical analysis of the micropolar nano uid was carried out by invoking the non-integer order derivative and transform methods. By applying a mathematical tool to the equations of micropolar nano uid, the solutions were explored for temperature, microrotation, and velocity. In order to meet the physical aspects of the problem based on micropolar nano uid, the comparison of velocity eld of micropolar nano uid for the suspension of ethylene glycol into silver and that of ethylene glycol into copper is made to enhance the rate of heat transfer.

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Heat Transfer Analysis of MHD Water Functionalized Carbon Nanotube Flow over a Static/Moving Wedge

Cited by 31 publications

References 42 publications

Interaction of single and multi walls carbon nanotubes in magnetized-nano Casson fluid over radiated horizontal needle

Interaction of single and multi walls carbon nanotubes in magnetized-nano Casson fluid over radiated horizontal needle

Effect of SWCNTs and MWCNTs Maxwell MHD nanofluid flow between two stretchable rotating disks under convective boundary conditions

Heat Transfer on Fractionalized Micropolar Nanofluid over Oscillating Plate via Caputo-Fabrizio Fractional Operator

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