Heat transfer and entropy generation analysis of nanofluids thermocapillary convection around a bubble in a cavity

Jiang, Yanni; Zhou, Xiaoming

doi:10.1016/j.icheatmasstransfer.2019.03.013

Cited by 39 publications

(8 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Substituting equation ( 26) into equations ( 27)-( 31) after some simplifications and rearranging depending on powers of p-terms and solved using conditions (19), the following approximations can be obtained:…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Heat and Mass Transfer Analysis of Nanofluid Flow Based on Cu, Al2O3, and
Abbas
¹
,
Magdy²
2020
Mathematical Problems in Engineering
46
0
17
0
View full text Add to dashboard Cite

The study of rotating nanofluid flows has a vital role in several applications such as in food processing, rotating machinery, cooling systems, and chemical fluid. The aims of the present work are to improve the thermophysical properties of convective flow and heat transfer for unsteady nanofluid past a moving rotating plate in the presence of ohmic, viscous dissipations, Brownian, and thermophoresis diffusion. The system is strained under the effect of strong magnetic field, and then the Hall current is considered. For this investigation, three different types of the nanoparticles Cu (copper), Al2O3 (aluminium oxide), and TiO2 (titanium dioxide) with various shapes (spherical, cylindrical, and brick) are considered, and water is used as a base nanofluid. The system governing equations are solved semianalytically using homotopy perturbation technique. In order to validate the present work, different comparisons are made under some special cases with previously published results and found an excellent agreement. It is observed that the shape of nanoparticles plays a substantial role to significantly determine the flow behaviour. Also, it can be found that the use of the cylindrical nanoparticle shape has better improvement for heat transfer rate compared with the other nanoparticle shapes.

show abstract

Section: Methodsmentioning

confidence: 99%

“…Hussain et al [17] presented the analytical solution of unsteady flow past a moving rotating plate considering the effects of Hall current and chemical reaction. Many investigators studied the thermocapillary convective with heat transfer on the fluid/nanofluid flow field under different categories and conditions [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Heat and Mass Transfer Analysis of Nanofluid Flow Based on Cu, Al2O3, and
Abbas
¹
,
Magdy²
2020
Mathematical Problems in Engineering
46
0
17
0
View full text Add to dashboard Cite

show abstract

“…Hussain et al [17] illustrated analytical results by employing Laplace transform to explore unsteady hydromagnetic flow over a rotating system subject to chemical reaction and Hall current. Several mathematicians and investigators reported the thermal conductivity and electrical conductivity nature of nanofluids under different conditions with various geometry convective heat transfer effects in [18][19][20][21][22][23]. Mahanthesh et al [24] evaluated the impact of suspended nanoparticles on the convective flow of nanomaterial in view of the vertical surface with radiation effects.…”

Section: Introductionmentioning

confidence: 99%

Impact of Nanofluid Flow over an Elongated Moving Surface with a Uniform Hydromagnetic Field and Nonlinear Heat Reservoir

et al. 2021

View full text Add to dashboard Cite

The increasing global demand for energy necessitates devoted attention to the formulation and exploration of mechanisms of thermal heat exchangers to explore and save heat energy. Thus, innovative thermal transport fluids require to boost thermal conductivity and heat flow features to upsurge convection heat rate, and nanofluids have been effectively employed as standard heat transfer fluids. With such intention, herein, we formulated and developed the constitutive flow laws by utilizing the Rossland diffusion approximation and Stephen’s law along with the MHD effect. The mathematical formulation is based on boundary layer theory pioneered by Prandtl. Governing nonlinear partial differential flow equations are changed to ODEs via the implementation of the similarity variables. A well-known computational algorithm BVPh2 has been utilized for the solution of the nonlinear system of ODEs. The consequence of innumerable physical parameters on flow field, thermal distribution, and solutal field, such as magnetic field, Lewis number, velocity parameter, Prandtl number, drag force, Nusselt number, and Sherwood number, is plotted via graphs. Finally, numerical consequences are compared with the homotopic solution as a limiting case, and an exceptional agreement is found.

show abstract

“…They also mentioned that the thermocapillary jet in minichannel can strongly improve the thermal energy transport near gas bubble. In another work, Jiang and Zhou [12] reported a computational analysis of heat transfer and entropy generation driven by nanofluids thermocapillary convection around a bubble in a cavity. They concentrated on the influence of nanoparticles diameter and volumetric fraction on flow behavior, heat transfer achievement and entropy creation.…”

Section: Introductionmentioning

confidence: 99%

3D Magneto-Buoyancy-Thermocapillary Convection of CNT-Water Nanofluid in the Presence of a Magnetic Field

et al. 2020

View full text Add to dashboard Cite

A numerical study is performed to investigate the effects of adding Carbon Nano Tube (CNT) and applying a magnetic field in two directions (vertical and horizontal) on the 3D-thermo-capillary natural convection. The cavity is differentially heated with a free upper surface. Governing equations are solved using the finite volume method. Results are presented in term of flow structure, temperature field and rate of heat transfer. In fact, results revealed that the flow structure and heat transfer rate are considerably affected by the magnitude and the direction of the magnetic field, the presence of thermocapillary forces and by increasing nanoparticles volume fraction. In opposition, the increase of the magnetic field magnitude leads to the control the flow causing flow stabilization by merging vortexes and reducing heat transfer rate.

show abstract

Heat transfer and entropy generation analysis of nanofluids thermocapillary convection around a bubble in a cavity

Cited by 39 publications

References 27 publications

Heat and Mass Transfer Analysis of Nanofluid Flow Based on Cu, Al2O3, and
Abbas
¹
,
Magdy²
2020
Mathematical Problems in Engineering
46
0
17
0
View full text Add to dashboard Cite

Heat and Mass Transfer Analysis of Nanofluid Flow Based on Cu, Al2O3, and
Abbas
¹
,
Magdy²
2020
Mathematical Problems in Engineering
46
0
17
0
View full text Add to dashboard Cite

Impact of Nanofluid Flow over an Elongated Moving Surface with a Uniform Hydromagnetic Field and Nonlinear Heat Reservoir

3D Magneto-Buoyancy-Thermocapillary Convection of CNT-Water Nanofluid in the Presence of a Magnetic Field

Contact Info

Product

Resources

About

Heat transfer and entropy generation analysis of nanofluids thermocapillary convection around a bubble in a cavity

Cited by 39 publications

References 27 publications

Heat and Mass Transfer Analysis of Nanofluid Flow Based on Cu, Al2O3, and Abbas1, Magdy2 2020Mathematical Problems in Engineering460170View full textAdd to dashboardCite

Heat and Mass Transfer Analysis of Nanofluid Flow Based on Cu, Al2O3, and Abbas1, Magdy2 2020Mathematical Problems in Engineering460170View full textAdd to dashboardCite

Impact of Nanofluid Flow over an Elongated Moving Surface with a Uniform Hydromagnetic Field and Nonlinear Heat Reservoir

3D Magneto-Buoyancy-Thermocapillary Convection of CNT-Water Nanofluid in the Presence of a Magnetic Field

Contact Info

Product

Resources

About

Heat and Mass Transfer Analysis of Nanofluid Flow Based on Cu, Al2O3, and
Abbas
¹
,
Magdy²
2020
Mathematical Problems in Engineering
46
0
17
0
View full text Add to dashboard Cite

Heat and Mass Transfer Analysis of Nanofluid Flow Based on Cu, Al2O3, and
Abbas
¹
,
Magdy²
2020
Mathematical Problems in Engineering
46
0
17
0
View full text Add to dashboard Cite