Convection in Nanofluid-Filled Porous Cavity with Heat Absorption/Generation and Radiation

Sekhar, B. Chandra; Kishan, N.; Haritha, C.

doi:10.2514/1.t5010

Cited by 18 publications

(7 citation statements)

References 40 publications

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“…Chandra et al [ 71 ] investigated the fluid flow and heat-transfer characteristics of nanofluid while it is contained in a U-shaped cavity and subjected to a magnetic field. The

numbers rise with increasing AR (aspect ratio of the cavity) and n (power law index).…”

Section: The Role Of Cavities In Nanofluid Transportmentioning

confidence: 99%

The Impact of Cavities in Different Thermal Applications of Nanofluids: A Review

et al. 2023

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Nanofluids and nanotechnology are very important in enhancing heat transfer due to the thermal conductivity of their nanoparticles, which play a vital role in heat transfer applications. Researchers have used cavities filled with nanofluids for two decades to increase the heat-transfer rate. This review also highlights a variety of theoretical and experimentally measured cavities by exploring the following parameters: the significance of cavities in nanofluids, the effects of nanoparticle concentration and nanoparticle material, the influence of the inclination angle of cavities, heater and cooler effects, and magnetic field effects in cavities. The different shapes of the cavities have several advantages in multiple applications, e.g., L-shaped cavities used in the cooling systems of nuclear and chemical reactors and electronic components. Open cavities such as ellipsoidal, triangular, trapezoidal, and hexagonal are applied in electronic equipment cooling, building heating and cooling, and automotive applications. Appropriate cavity design conserves energy and produces attractive heat-transfer rates. Circular microchannel heat exchangers perform best. Despite the high performance of circular cavities in micro heat exchangers, square cavities have more applications. The use of nanofluids has been found to improve thermal performance in all the cavities studied. According to the experimental data, nanofluid use has been proven to be a dependable solution for enhancing thermal efficiency. To improve performance, it is suggested that research focus on different shapes of nanoparticles less than 10 nm with the same design of the cavities in microchannel heat exchangers and solar collectors.

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“…Chandra et al [ 71 ] investigated the fluid flow and heat-transfer characteristics of nanofluid while it is contained in a U-shaped cavity and subjected to a magnetic field. The

numbers rise with increasing AR (aspect ratio of the cavity) and n (power law index).…”

Section: The Role Of Cavities In Nanofluid Transportmentioning

confidence: 99%

The Impact of Cavities in Different Thermal Applications of Nanofluids: A Review

et al. 2023

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“…The numerical solution of the coupled thermo-mechanical problems represent one of the most complex domains in physics [4]. Since the formulation of mathematical model represents the most important part of any numerical method, 2𝐷 [9][10][11][12][13] and 3𝐷 [10,14,15] models are largely used. But the scientific community recommends the use of simpler models whose treatment requirements are less demanding and privileging 2D models whenever possible when the accuracy of results is acceptable.…”

Section: Introductionmentioning

confidence: 99%

Transition of thermally induced flow in a square cavity using an iterative predictor–corrector meshfree approach

Hilali

Bourihane

2022

Z Angew Math Mech

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This paper aims to propose a new approach based on meshfree method to solve the dimensionless steady nonlinear natural convection equations. The solution methodology uses the moving least squares (MLS) shape functions to discretize the weak form of the governing equations and the Newton-Raphson algorithm to compute the nonlinear solution. Parametric studies of natural convection concerning closed two-dimensional (2D) cavity with different operating conditions filled with air is used to assess the impact of the proposed approach on the performance of computed solutions. The cavity is formed by adiabatic and isothermal walls. For that, in all considered cases, the vertical sidewalls of the enclosure are heated differentially and maintained at hot and cold temperatures. The horizontal top and bottom walls are considered thermally insulated. The thermophysical properties of the working fluid are assumed to be constant except the density variations causing a body force term in the momentum equation. No-slip boundary condition is applied at all enclosure boundaries and all internal body boundaries. The considered cases are described and analyzed in detail to check the validity of the proposed method. A comparison is performed between the results obtained from the present computer code and those available in the literature.The influence of various controlling parameters is analyzed and discussed graphically through the obtained streamlines, isotherms, and (maximum and average) Nusselt number. The numerical results computed by the proposed method are found to be in good agreement with the reference data.

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“…They concluded that the volume fraction of nanoparticles and profiles of motile microorganisms have an inverse relation with Prandtl number and Brownian motion parameter. Valuable investigation can be studied in the following papers (Hayat et al , 2019; Khan et al , 2017c; Khan et al , 2020c; Nayak et al , 2020; Khan et al , 2020b; Khan et al , 2020a; Sheremet et al , 2019; Chandra Sekhar et al , 2017; Balla et al , 2020; Balla and Naikoti, 2016, 2015; Balla et al , 2019b).…”

Section: Introductionmentioning

confidence: 99%

Investigation of magnetohydrodynamic nanofluid flow contain motile oxytactic microorganisms over rotating cone

Mogharrebi

Ganji

Hosseinzadeh

et al. 2021

HFF

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Purpose The purpose of the study is to indicate a three-dimensional convective heat transfer properties evaluation of magnetohydrodynamics nanofluid flow, comprising motile oxytactic microorganisms and nanoparticles, passing through a rotating cone. Design/methodology/approach The imposed technique for solving the governing equations is the Runge–Kutta fifth-order method. The main point of this survey is to diagnosis the influence of diverse factors on velocity, temperature distributions and concentration profile. Furthermore, appending the magnetic field, thermal radiation and viscous dissipation in calculations; also, simultaneous involvement of heat absorption and excretion has been represented as novelties. Findings The results elucidate that by changing the Peclet number from 1 to 2, the dimensionless concentration of the microorganisms has been diminished by about 34.37%. In addition, variation of the magnetic parameter from 0 to 1 has been resulted in reducing the temperature distribution by about 3.11%. Originality/value Recently, attention has been absorbed to adding the motile microorganisms to nanofluid for enhancement of heat transfer and avoiding aggregation of particles. In this regard, the hydrothermal flow of microorganisms has been investigated in this study.

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Convection in Nanofluid-Filled Porous Cavity with Heat Absorption/Generation and Radiation

Cited by 18 publications

References 40 publications

The Impact of Cavities in Different Thermal Applications of Nanofluids: A Review

The Impact of Cavities in Different Thermal Applications of Nanofluids: A Review

Transition of thermally induced flow in a square cavity using an iterative predictor–corrector meshfree approach

Investigation of magnetohydrodynamic nanofluid flow contain motile oxytactic microorganisms over rotating cone

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