Hybrid nanofluid flow through a spinning Darcy–Forchheimer porous space with thermal radiation

AbstractThis work investigates numerically the solution of Darcy–Forchheimer flow for hybrid nanofluid by employing the slip conditions. Basically, the fluid flow is produced by a swirling disk and is exposed to thermal stratification along with non-linear thermal radiation for controlling the heat transfer of the flow system. In this investigation, the nanoparticles of titanium dioxide and aluminum oxide have been suspended in water as base fluid. Moreover, the Darcy–Forchheimer expression is used to characterize the porous spaces with variable porosity and permeability. The resulting expressions of motion, energy and mass transfer in dimensionless form have been solved by HAM (Homotopy analysis method). In addition, the influence of different emerging factors upon flow system has been disputed both theoretically in graphical form and numerically in the tabular form. During this effort, it has been recognized that velocities profiles augment with growing values of mixed convection parameter while thermal characteristics enhance with augmenting values of radiation parameters. According to the findings, heat is transmitted more quickly in hybrid nanofluid than in traditional nanofluid. Furthermore, it is estimated that the velocities of fluid $$f^{\prime}\left( \xi \right),g\left( \xi \right)$$ f ′ ξ , g ξ are decayed for high values of $$\phi_{1} ,\phi_{2} ,\,Fr$$ ϕ 1 , ϕ 2 , F r and $$k_{1}$$ k 1 factors.

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Energy Efficient Hybrid Nanofluids for Tubular Cooling Applications

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.592-594.922 ◽

2014 ◽

Vol 592-594 ◽

pp. 922-926 ◽

Cited By ~ 5

Author(s):

Devasenan Madhesh ◽

S. Kalaiselvam

Keyword(s):

Heat Transfer ◽

Heat Transfer Coefficient ◽

Transfer Coefficient ◽

Volume Concentration ◽

Thermal Characteristics ◽

Hybrid Nanofluid ◽

Tubular Heat Exchanger ◽

Overall Heat Transfer Coefficient ◽

Flow Through ◽

Hybrid Nanofluids

Analysis of heat transfer behaviour of hybrid nanofluid (HyNF) flow through the tubular heat exchanger was experimentally investigated. In this analysis the effects of thermal characteristics of forced convection, Nusselt number, Peclet number, and overall heat transfer coefficient were investigated.The nanofluid was prepared by dispersing the copper-titania hybrid nanocomposite (HyNC) in the water. The experiments were performed for various nanoparticle volume concentrations addition in the base fluid from the range of 0.1% to 1.0%. The experimental results show that the overall heat transfer coefficient was found to increases maximum by 30.4%, up to 0.7% volume concentration of HyNC.

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Influences of Marangoni Convection and Variable Magnetic Field Hybrid Nanofluid Thin Film Flow past a Stretching Surface

Chinese Physics B ◽

10.1088/1674-1056/ac3a5d ◽

2021 ◽

Author(s):

Noor Wali Khan ◽

Arshad Khan ◽

Muhammad Usman ◽

Taza Gul ◽

Abir Mouldi ◽

...

Keyword(s):

Magnetic Field ◽

Thin Film ◽

Film Flow ◽

Marangoni Convection ◽

Flow System ◽

Thermal Characteristics ◽

Variable Magnetic Field ◽

Current Work ◽

Hybrid Nanofluid ◽

Thin Film Flow

Abstract The investigations about thin-film flow play a vital role in the field of optoelectronics and magnetic devices. Thin films are reasonably hard and thermally stable but are more fragile. The thermal stability of thin film can be further improved by incorporating the effects of nanoparticles. In the current work, a stretchable surface is considered upon which hybrid nanofluid thin-film flow is taken into account. The idea of augmenting heat transmission is focused in current work by making use of hybrid nanofluid. The flow is affected by variations in the viscous forces along with viscous dissipation effects and Marangoni convection. A time-constrained magnetic field is applied in the normal direction to the flow system. The equations governing the flow system are shifted to a non-dimensional form by applying similarity variables. The homotopy analysis method (HAM) has been employed to find the solution of resultant equations. It has been noticed in this study that, the flow characteristics decline with augmentation in magnetic, viscosity, and unsteadiness parameters while grow up with enhancing values of thin-film parameter. Thermal characteristics are supported by the growing values of the Eckert number and unsteadiness parameter while opposed by the viscosity parameter and Prandtl number. The numerical impact of different emerging parameters upon skin friction and Nusselt number has been calculated in tabular form. A comparison of current work with established result has carried out with a good agreement in both results.

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Magnetohydrodynamics Mixed Convective Couple Stress Hybrid Nanofluid Darcy-Forchheimer Flow through a Rotating Porous Space

10.21203/rs.3.rs-501355/v1 ◽

2021 ◽

Author(s):

F.M Alharbi ◽

Muhammad Jawad ◽

Muhammad Zubair ◽

Muhammad Naeem ◽

Ibn-i- Amin ◽

...

Keyword(s):

Couple Stress ◽

Magnetic Parameter ◽

Local Heat Transfer ◽

Velocity Slip ◽

Hybrid Nanofluid ◽

Porous Space ◽

Radiation Parameter ◽

Aluminum Oxides ◽

Flow Through ◽

Forchheimer Flow

Abstract In this study, we consider the magnetohydrodynamics mixed convective couple stress hybrid nanofluid Darcy-Forchheimer flow through a rotating porous space with velocity slip condition. The nonlinear thermal stratification and thermal radiation of Magnetohydrodynamics (MHD) are discussed in detail. For relative analysis, we have taken the nanoparticals samples of Aluminum oxides (Al2O3) and Titanium dioxide (TiO2). The rotation in the disk is produces for the generation of the flow in the system.Furthermore, the variable permeability and porosity of porous space is regarded as Darcy-Forchheimer expression. The resulting nonlinear system of ODE’s are solved by Homotopy Analysis Method (HAM). The governing of several sundry parameters i.e. “Couple Stress, coefficient of inertia, radiation parameter, magnetic parameter, Prandtl number, heat source or sink parameter” are presented both graphically as well as in numerical tables. The behavior of the flow predicted that the increase of both mixed convection and couple stress parameters cause increase in the momentum profile. Temperature of the system rises for higher values of radiation parameter and magnetic parameter. The higher local heat transfer rate of Aluminum oxides (Al2O3) and Titanium oxide (TiO2)or water is examined as compared to hybrid nanofluid.

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Darcy-Forchheimer hybrid nanofluid flow over a stretching curved surface with heat and mass transfer

PLoS ONE ◽

10.1371/journal.pone.0249434 ◽

2021 ◽

Vol 16 (5) ◽

pp. e0249434

Author(s):

Anwar Saeed ◽

Wajdi Alghamdi ◽

Safyan Mukhtar ◽

Syed Imad Ali Shah ◽

Poom Kumam ◽

...

Keyword(s):

Differential Equations ◽

Ordinary Differential Equations ◽

Volume Fraction ◽

Curved Surface ◽

Hybrid Nanofluid ◽

Porous Space ◽

Highly Nonlinear ◽

Homotopy Analysis ◽

Curvature Parameter ◽

Swcnts And Mwcnts

The present article provides a detailed analysis of the Darcy Forchheimer flow of hybrid nanoliquid past an exponentially extending curved surface. In the porous space, the viscous fluid is expressed by Darcy-Forchheimer. The cylindrical shaped carbon nanotubes (SWCNTs and MWCNTs) and Fe3O4 (iron oxide) are used to synthesize hybrid nanofluid. At first, the appropriate similarity transformation is used to convert the modeled nonlinear coupled partial differential equations into nonlinear coupled ordinary differential equations. Then the resulting highly nonlinear coupled ordinary differential equations are analytically solved by the utilization of the “Homotopy analysis method” (HAM) method. The influence of sundry flow factors on velocity, temperature, and concentration profile are sketched and briefly discussed. The enhancement in both volume fraction parameter and curvature parameter k results in raises of the velocity profile. The uses of both Fe3O4 and CNTs nanoparticles are expressively improving the thermophysical properties of the base fluid. Apart from this, the numerical values of some physical quantities such as skin friction coefficients, local Nusselt number, and Sherwood number for the variation of the values of pertinent parameters are displayed in tabular forms. The obtained results show that the hybrid nanofluid enhances the heat transfer rate 2.21%, 2.1%, and 2.3% using the MWCNTs, SWCNTs, and Fe3O4 nanomaterials.

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The electrical magnetohydrodynamic (MHD) and shape factor impacts in a mixture fluid suspended by hybrid nanoparticles between non-parallel plates

Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering ◽

10.1177/09544089211057971 ◽

2021 ◽

pp. 095440892110579

Author(s):

Abdelkader Khentout ◽

Mohamed Kezzar ◽

Mohamed R. Sari ◽

Tabet Ismail ◽

Mustapha S. Tich Tich ◽

...

Keyword(s):

Homotopy Analysis Method ◽

Fluid Velocity ◽

Hybrid Nanoparticles ◽

Graphical Form ◽

Hybrid Nanofluid ◽

Parallel Plates ◽

Analysis Method ◽

Non Linear ◽

Homotopy Analysis ◽

Shape Of Nanoparticles

Abstract In this research work, we introduce the influences of the shape of nanoparticles and joule heating in the hydromagnetic flow of hybrid nanofluids between non-parallel plates. A mixture base fluid (H2O (50%)-C2H6O2 (50%)), a hybrid nanofluid containing hybrid nanoparticles (graphene oxide-molybdenum disulfide, GO-MoS2) as nanoparticles, is considered. The non-linear governing equations are reduced into ordinary-differential equations (ODEs) by similarity transformations. The non-linear ordinary-differential equation (ODE) is solved numerically utilizing 4th–5th order Runge-Kutta-Fehlberg (RKF-45) with a shooting method and analytically using the homotopy analysis method (HAM). The effect of the rarefaction parameter, Reynolds number, channel angle, Hartmann number, electric field parameter, and the shape of nanoparticles on fluid velocity and skin friction are discussed and presented in a graphical form. Also, the theoretical results and the effectiveness of the homotopy analysis method (HAM) are confirmed by numerical tests and presented graphically coupled with detailed discussions.

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Darcy-Forchheimer MHD Hybrid Nanofluid Flow and Heat Transfer Analysis over a Porous Stretching Cylinder

Coatings ◽

10.3390/coatings10040391 ◽

2020 ◽

Vol 10 (4) ◽

pp. 391 ◽

Cited By ~ 1

Author(s):

Anwar Saeed ◽

Asifa Tassaddiq ◽

Arshad Khan ◽

Muhammad Jawad ◽

Wejdan Deebani ◽

...

Keyword(s):

Heat Transfer ◽

Research Work ◽

Thermal Characteristics ◽

Heat Transfer Analysis ◽

Hybrid Nanofluid ◽

Stretching Cylinder ◽

Flow And Heat Transfer ◽

Flow Through ◽

Model Equations ◽

Energy Equations

This research work deals with investigation of the thermal characteristics of the Darcy–Forchheimer hydromagnetic hybrid nanofluid (Al2O3-Cu/H2O) flow through a permeable stretching cylinder. The model equations, which consist of continuity, momentum, and energy equations, are converted to a set of coupled ordinary differential equations through similarity variables transformations and appropriate boundary conditions. Brownian motion and Thermophoresis effects are mainly focused in this work. The impacts of some interesting parameters over velocity, temperature, and concentrations profiles are graphically studied. The present study will be helpful in understanding the thermal characteristics of heat transfer liquids.

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Darcy-Forchheimer flow of nanofluid in a rotating frame

International Journal of Numerical Methods for Heat &amp Fluid Flow ◽

10.1108/hff-01-2018-0021 ◽

2018 ◽

Vol 28 (12) ◽

pp. 2895-2915 ◽

Cited By ~ 15

Author(s):

Tasawar Hayat ◽

Arsalan Aziz ◽

Taseer Muhammad ◽

Ahmed Alsaedi

Keyword(s):

Heat Transfer ◽

Thermal Characteristics ◽

Random Motion ◽

Hybrid Nanofluid ◽

Porous Space ◽

Optimal Homotopy Analysis Method ◽

Content Type ◽

Surface Mass ◽

Flow And Heat Transfer ◽

Special Cases

Purpose The aim of this study is to elaborate three dimensional rotating flow of nanoliquid induced by a stretchable sheet subject to Darcy–Forchheimer porous space. Thermophoretic diffusion and random motion aspects are retained. Prescribed surface heat flux and prescribed surface mass flux conditions are implemented at stretchable surface. Convergent series solutions have been derived for velocities, temperature and concentration. Design/methodology/approach Optimal homotopy analysis method is implemented for the solution development. Findings The current solution demonstrates very good agreement with those of the previously published studies in the special cases of regular fluid and nanofluids. Graphical results are presented to investigate the influences of the titania and copper nanoparticle volume fractions and also the nodal/saddle indicative parameter on flow and heat transfer characteristics. Here, the thermal characteristics of hybrid nanofluid are found to be higher in comparison to the base fluid and fluid containing single nanoparticles, respectively. An important point to note is that the developed model can be used with great confidence to study the flow and heat transfer of hybrid nanofluids. Originality/value To the best of the authors’ knowledge, no such consideration has been given in the literature yet.

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