Mixed Convection Heat Transfer in a Square Lid-Driven Cavity Filled with Al2O3-Water Nanofluid

Taamneh, Yazan; Bataineh, Kahled

doi:10.5545/sv-jme.2017.4449

Cited by 11 publications

(22 citation statements)

References 26 publications

(29 reference statements)

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“…The hot left wall dimensionless temperature is set to one while the cold right wall dimensionless temperature is set to zero. Table 2 shows a comparison between the mean Nusselt number at the cold surface obtained by the current code and that obtained by De Vahl Davis and Jones, 24 De Vahl Davis, 25 and Nag et al 26 at Ra = 10 Also, Figure 4 shows a comparison of the current code results with the results obtained by Taamneh and Bataineh 27 for the case of a lid driven cavity in which nanofluid particles of Al 2 O 3 is dispersed inside the cavity, f = 0.01 and different Richardson numbers were considered. Where Ri = gb(T 1 -T 2 )L/V 2 .…”

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confidence: 72%

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Numerical study of heat transfer enhancement in the entrance region for low-pressure gaseous laminar pipe flows using Al₂O₃–air nanofluid

Al‐Kouz

Al-Waked

Sari

et al. 2018

Advances in Mechanical Engineering

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The gaseous low-pressure nanofluid flow of a steady-state two-dimensional laminar forced convection heat transfer in the entrance region of pipes is numerically investigated. Such flows are of interest for many engineering applications like the nuclear reactor and electronic equipment cooling, heat exchangers, and many others. Physical parameters considered in this study are Reynolds number (Re), Prandtl number (Pr), nanosolid particles volume fraction (f), Knudsen number (Kn), and the aspect ratio (AR). These parameters ranges are as follows: 500 Re 2000, 0:76 Pr 0:95, 0 f 0:5, 0 Kn 0:1, and 1 AR 10. The outcome of this study shows that by increasing Kn, velocity slip and temperature jump at the solid boundaries increase. In addition, heat transfer is enhanced by dispersing Al 2 O 3 nanoparticles in the base low-pressure gaseous flow. Results show that there is no effect of the nanoparticles volume fraction with values below 0.03 on the average Nusselt number. The average Nusselt number increases (Nu) as the value of the nanoparticles volume fraction exceeds 0.03. For instance, at Re = 1000, results show that when dispersing Al 2 O 3 nanosolid particles with volume fractions of 0.3 and 0.5; there is an enhancement in the average Nusselt number of 30.35% and 136.74%, respectively, when compared to the case of dispersing Al 2 O 3 nanosolid particles of 0.03 volume fraction.. Moreover, it is concluded that the average Nusselt number (Nu) depends directly on Reynolds (Re), Prandtl (Pr) numbers, and the nanoparticles volume fraction (f) and inversely on Knudsen number (Kn) and the aspect ratio (AR) for the investigated range of parameters considered in this study. Finally, a correlation of Nusselt number among all the investigated parameters in this study is proposed as Nu = 0:976AR

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confidence: 72%

“…Also, Figure 4 shows a comparison of the current code results with the results obtained by Taamneh and Bataineh 27 for the case of a lid driven cavity in which nanofluid particles of Al 2 O 3 is dispersed inside the cavity, ϕ = 0.01 and different Richardson numbers were considered. Where Ri = gβ(T 1 – T 2 )L / V 2 .…”

Section: Solution Methodologymentioning

confidence: 98%

Numerical study of heat transfer enhancement in the entrance region for low-pressure gaseous laminar pipe flows using Al₂O₃–air nanofluid

Al‐Kouz

Al-Waked

Sari

et al. 2018

Advances in Mechanical Engineering

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“…Comparison between results obtained from the current code to results obtained by Taamneh and Bataineh[25] 5 RESULTS AND DISCUSSIONFig. 5 shows the velocity stream function contours inside the square cavities with a fin position of H F = 0.25 to 0.75 and fin lengths of 0.5 m for the cases with Knudsen number values of zero, 0.01, 0.05 and 0.1 to cover the continuum and slip flow regimes.…”

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confidence: 87%

“…They compared their results with the available traditional single-phase correlations for fully developed flow; no abnormal heat transfer enhancement was observed in the study. Steady laminar mixed convection flow in a lid-driven square cavity filled with Al 2 O 3 water nanofluid was investigated computationally by Taamneh and Bataineh [25]. Different volume fractions of the nanoparticles as well as different Richardson numbers were considered.…”

Section: • the Cavity Was Filled With Air-al 2 O 3 Nanofluid • The Ementioning

confidence: 99%

“…In addition, Fig. 4 shows results from the current code compared to the results obtained by Taamneh and Bataineh [25] at ϕ = 0.01 and different Richardson numbers (Ri) for the case of mixed convection heat transfer in a squarelid-driven cavity filled with water/Al 2 O 3 nanofluid. The figure illustrates that there is a maximum error of 3 %.…”

Section: Code Verificationmentioning

confidence: 99%

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Numerical Study of Heat Transfer Enhancement for Low-Pressure Flows in a Square Cavity with Two Fins Attached to the Hot Wall Using Al2O3-Air Nanofluid

Al‐Kouz

Kiwan

Alkhalidi

et al. 2018

SV-JME

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The gaseous low-pressure nanofluid flow of a steady-state two-dimensional laminar natural convection heat transfer in a square cavity of length L with two attached solid fins to the hot wall is numerically investigated. Such flows are found in many engineering applications, such as nuclear reactors and electronic cooling equipment. Physical parameter ranges in this study are as follows: 0 ≤ Kn ≤ 0.1, 10 3 ≤ Ra ≤10 6 , 0 ≤ ϕ ≤ 0.2, L F /L takes the value of 0.5, H F takes the values of 0.25 to 0.75. Simulation results show that Nusselt number depends directly on the Rayleigh number and inversely on the Knudsen number. In addition, it is found that heat transfer will be enhanced by dispersing the nanoparticles of Al 2 O 3 in the base low-pressure gaseous flow. Moreover, it is found that the Nusselt number of such flows increases as the nano-particle volume fraction increases for the investigated range of volume fractions considered in this study. In addition, a correlation of the Nusselt number among all the investigated parameters in this study is proposed as Nu = 0.2196 Ra 0.0829 Kn-0.511 ϕ 0.104 .

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A class of second‐order schemes with application to chemically reactive radiative natural convection flow in a rectangular enclosure

Nawaz

Arif

Nazeer

2021

Numerical Methods in Fluids

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A new class of explicit second-order schemes is proposed for solving time-dependent partial differential equations. This class of proposed schemes is constructed on three-time levels. Stability is found for the scalar two-dimensional heat equation and the system of time-dependent partial differential equations. This partial differential equations system comprises a non-dimensional set of equations obtained from the governing equations of natural convection chemically reactive fluid flow in a rectangular enclosure with thermal radiations. Flow is generated by applying the force of pressure. Graphs of streamlines, contours plots of velocity, temperature and concentration profiles, local Nusselt number, and local Sherwood number are displayed with the variation of time and parameters in the considered partial differential equations.Results are shown in the form of streamlines and contour plots. It is found that local Nusselt number has dual behavior by enhancing radiation parameter whereas local Sherwood number de-escalates by upraising the reaction rate parameter. It is hoped that the results in this pagination will serve as a valuable resource for future fluid-flow studies in an enclosed industrial environment.

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Mixed Convection Heat Transfer in a Square Lid-Driven Cavity Filled with Al2O3-Water Nanofluid

Cited by 11 publications

References 26 publications

Numerical study of heat transfer enhancement in the entrance region for low-pressure gaseous laminar pipe flows using Al₂O₃–air nanofluid

Numerical study of heat transfer enhancement in the entrance region for low-pressure gaseous laminar pipe flows using Al₂O₃–air nanofluid

Numerical Study of Heat Transfer Enhancement for Low-Pressure Flows in a Square Cavity with Two Fins Attached to the Hot Wall Using Al2O3-Air Nanofluid

A class of second‐order schemes with application to chemically reactive radiative natural convection flow in a rectangular enclosure

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Mixed Convection Heat Transfer in a Square Lid-Driven Cavity Filled with Al2O3-Water Nanofluid

Cited by 11 publications

References 26 publications

Numerical study of heat transfer enhancement in the entrance region for low-pressure gaseous laminar pipe flows using Al2O3–air nanofluid

Numerical study of heat transfer enhancement in the entrance region for low-pressure gaseous laminar pipe flows using Al2O3–air nanofluid

Numerical Study of Heat Transfer Enhancement for Low-Pressure Flows in a Square Cavity with Two Fins Attached to the Hot Wall Using Al2O3-Air Nanofluid

A class of second‐order schemes with application to chemically reactive radiative natural convection flow in a rectangular enclosure

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Numerical study of heat transfer enhancement in the entrance region for low-pressure gaseous laminar pipe flows using Al₂O₃–air nanofluid

Numerical study of heat transfer enhancement in the entrance region for low-pressure gaseous laminar pipe flows using Al₂O₃–air nanofluid