A novel case study of thermal and streamline analysis in a grooved enclosure filled with (Ag–MgO/Water) hybrid nanofluid: Galerkin FEM

Hiba, Brahimi; Redouane, Fares; Jamshed, Wasim; Saleel, C. Ahamed; Devi, S. Suriya Uma; Prakash, M.; Nisar, Kottakkaran Sooppy; Vijayakumar, V.; Eid, Mohamed R.

doi:10.1016/j.csite.2021.101372

Cited by 46 publications

(13 citation statements)

References 27 publications

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“…The density and the thermal conductivity as well as the heat capacity of the hybrid nanofluid can be given as the following 29 , 31 …”

Section: Formulation Of Mathematical Modelmentioning

confidence: 99%

“…The effective dynamic viscosity of the hybrid nanofluid based on the Brinkman mode is considered as 29 , 31 : where, signifies the nanoparticle concentration factor. , , and are fluid viscidness, consistency, operative heat capacitance and thermally conductance of the basefluid, correspondingly.…”

Section: Formulation Of Mathematical Modelmentioning

confidence: 99%

“…At the top portion of the heated surface, the local Nusselt number peaks. Brahimi et al 31 conducted a numerical study of thermal and streamline analysis inside a cavity filled with (Ag–MgO/Water) hybrid nanofluid. They determined that because the box's structure causes the flow to meander over the cliff bars, this unique flux tends to slow the flow around it, allowing the particles to thermally transfer.…”

Section: Introductionmentioning

confidence: 99%

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Influence of entropy on Brinkman–Forchheimer model of MHD hybrid nanofluid flowing in enclosure containing rotating cylinder and undulating porous stratum

Redouane

Jamshed

Devi

et al. 2021

Sci Rep

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The current article aims to discuss the natural convection heat transfer of Ag/Al2O3-water hybrid filled in an enclosure subjected to a uniform magnetic field and provided with a rotating cylinder and an inner undulated porous layer. The various thermo-physical parameters are investigated such as Rayleigh number ($$100 \le Ra \le 100000$$ 100 ≤ R a ≤ 100000 ), Hartmann number ($$0 \le Ha \le 100$$ 0 ≤ H a ≤ 100 ), and the nanoparticles concentration ($$0.02 \le \phi \le 0.08$$ 0.02 ≤ ϕ ≤ 0.08 ). Likewise, the rotational speed of the cylinder ($$- 4000 \le \omega \le + 4000$$ - 4000 ≤ ω ≤ + 4000 ), as well as several characteristics related to the porous layer, are examined li its porosity ($$0.2 \le \varepsilon \le 0.8$$ 0.2 ≤ ε ≤ 0.8 ), Darcy number ($$- 100000 \le Da \le - 100$$ - 100000 ≤ D a ≤ - 100 ) which indicates the porous medium permeability and the number of undulations ($$0 \le N \le 4$$ 0 ≤ N ≤ 4 ). The calculations are carried out based on the Galerkin Finite element method (GFEM) to present the streamlines, isotherms, entropy generation, and average Nusselt numbers in details. The main results proved that increment of Rayleigh number and Darcy number enhances heat transfer convection within the enclosure. Whilst, the porosity presents a minimal impact. Also, the rotational speed in a positive direction has a favorable influence on the heat transfer dispersion across the cavity.

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“…The density and the thermal conductivity as well as the heat capacity of the hybrid nanofluid can be given as the following 29 , 31 …”

Section: Formulation Of Mathematical Modelmentioning

confidence: 99%

Section: Formulation Of Mathematical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of entropy on Brinkman–Forchheimer model of MHD hybrid nanofluid flowing in enclosure containing rotating cylinder and undulating porous stratum

Redouane

Jamshed

Devi

et al. 2021

Sci Rep

Self Cite

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“…Amine et al 48 addressed the MHD Ag-MgO/Water hybrid nanoliquid stream inside a triangular chamber with the circular porous regime and spinning circular barrier and observed obstacles influence in the flow topology. Hiba et al 49 analyzed the streamlines and thermal analysis of Ag-MgO/water hybrid nanoliquids inside a grooved compartment and observed heat transport enhancement for the Rayleigh number, while the reverse is marked for Hartmann number. Xiong et al 50 numerically simulated the impact of a differently positioned circular obstacle for mixed convective flow and noted Nusselt number amplification for Richardson number.…”

Section: Introductionmentioning

confidence: 99%

Effects of different thermal modes of obstacles on the natural convective Al₂O₃-water nanofluidic transport inside a triangular cavity

Acharya¹

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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This study investigates the Al2O3-water nanofluidic transport within an isosceles triangular compartment with top vertex downwards. The top wall is maintained isothermally cooled and left as well as right inclined walls are made uniformly heated. Two diamond-shaped obstacles are positioned inside the enclosure. The nanofluidic motion is supposed to be magnetically influenced. This investigation includes a fine analysis of how various thermal modes of obstacles affect the velocity and thermal profiles of the nanofluid. Appropriate similarity conversion leads to having a non-dimensional flow profile and is treated with Galerkin finite element scheme. The grid independency, experimental verification, and comparison assessments are directed to explore the model accuracy. The dynamic parameters like Rayleigh number [Formula: see text], nanoparticle volume fraction [Formula: see text], and Hartmann number [Formula: see text] are varied to perceive the noteworthy changes in isotherms, velocity, streamlines, and Nusselt number. The consequences specify average Nusselt number deteriorates for Hartmann number but escalates for nanoparticle concentration and Rayleigh number. Both heated and adiabatic obstacles exhibit high heat transport, while cold obstacles reveal the lowest magnitude in heat transmission. For Rayleigh number, cold obstacles reveal 34.51% heat transport enhancement, whereas it is 52.72% for heated obstacles compared to cold one. mathematics subject classification: 76W05

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“…Many other geometrical configurations were studied, e.g., coaxial cylinders [19], porous media [20], thermosyphons [21,22] as well as forced thermo-magnetic convection [23]. A new topic in the field started in the 2000s concerning nano-fluids with magnetic properties and their behavior under the influence of the strong magnetic field [24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

An Analysis of a Laminar-Turbulent Transition and Thermal Plumes Behavior in a Paramagnetic Fluid Subjected to an External Magnetic Field

Kraszewska

Donizak

2021

Energies

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Transition to turbulence and changes in the fluid flow structure are subjects of continuous analysis and research, especially for unique fields of research such as the thermo-magnetic convection of weakly magnetic fluids. Therefore, an experimental and numerical research of the influence of an external magnetic field on a natural convection’s fluid flow was conducted in the presented research. The experimental part was performed for an enclosure with a 0.5 aspect ratio, which was filled with a paramagnetic fluid and placed in a superconducting magnet in a position granting the enhancement of the flow. The process was recorded as temperature signals from the thermocouples placed in the analyzed fluid. The numerical research enabled an investigation based not only on temperature, but velocities as well. Experimental and numerical data were analyzed with the application of extended fast Fourier transform and wavelet analysis. The obtained results allowed the determination of changes in the nature of the flow and visualization of the influence of an imposed strong magnetic field on a magnetic fluid. It is proved that an applied magnetic field actuates the flow in Rayleigh-Benard convection and causes the change from laminar to turbulent flow for fairly low magnetic field inductions (2T and 3T for ΔT = 5 and 11 °C respectively). Fast Fourier transform allowed the definition of characteristic frequencies for oscillatory states in the flow, as well as an observation that the high values of magnetic field elongate the inertial range of the flow on the power spectrum density. Temperature maps obtained during numerical simulations granted visualizations of thermal plume formation and behavior with increasing magnetic field.

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A novel case study of thermal and streamline analysis in a grooved enclosure filled with (Ag–MgO/Water) hybrid nanofluid: Galerkin FEM

Cited by 46 publications

References 27 publications

Influence of entropy on Brinkman–Forchheimer model of MHD hybrid nanofluid flowing in enclosure containing rotating cylinder and undulating porous stratum

Influence of entropy on Brinkman–Forchheimer model of MHD hybrid nanofluid flowing in enclosure containing rotating cylinder and undulating porous stratum

Effects of different thermal modes of obstacles on the natural convective Al₂O₃-water nanofluidic transport inside a triangular cavity

An Analysis of a Laminar-Turbulent Transition and Thermal Plumes Behavior in a Paramagnetic Fluid Subjected to an External Magnetic Field

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A novel case study of thermal and streamline analysis in a grooved enclosure filled with (Ag–MgO/Water) hybrid nanofluid: Galerkin FEM

Cited by 46 publications

References 27 publications

Influence of entropy on Brinkman–Forchheimer model of MHD hybrid nanofluid flowing in enclosure containing rotating cylinder and undulating porous stratum

Influence of entropy on Brinkman–Forchheimer model of MHD hybrid nanofluid flowing in enclosure containing rotating cylinder and undulating porous stratum

Effects of different thermal modes of obstacles on the natural convective Al2O3-water nanofluidic transport inside a triangular cavity

An Analysis of a Laminar-Turbulent Transition and Thermal Plumes Behavior in a Paramagnetic Fluid Subjected to an External Magnetic Field

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Effects of different thermal modes of obstacles on the natural convective Al₂O₃-water nanofluidic transport inside a triangular cavity