Numerical simulation of buoyancy-induced heat transfer and entropy generation in 3D C-shaped cavity filled with CNT–Al<sub>2</sub>O<sub>3</sub>/water hybrid nanofluid-Reference-Cited by-同舟云学术

Numerical simulation of buoyancy-induced heat transfer and entropy generation in 3D C-shaped cavity filled with CNT–Al₂O₃/water hybrid nanofluid

Published:2022-02-02 Issue:0 Volume:0 Page:
ISSN:2191-0294
Container-title:International Journal of Nonlinear Sciences and Numerical Simulation
language:en
Short-container-title:

Author:

Aich Walid¹²,Chaabane Raoudha³,Öztop Hakan⁴⁵,Almeshaal Mohammed A.⁶,Maatki Chemseddine⁶⁷,Kahouli Omar⁸⁹,Kolsi Lioua¹⁷

Affiliation:

1. Mechanical Engineering Department, College of Engineering , University of Ha’il , Ha’il City , Saudi Arabia

2. Materials, Energy and Renewable Energies Research Unit, Faculty of Sciences , University of Gafsa , Gafsa 2112 , Tunisia

3. Laboratoire d’Etudes des Systèmes Thermiques et Energétiques , Ecole Nationale d’Ingénieurs de Monastir , Avenue Ibn El Jazzar, 5019 , Monastir , Tunisie

4. Department of Mechanical Engineering , Fırat University , Elazig TR-23119 , Turkey

5. Department of Medical Research , China Medical University Hospital, China Medical University , Taichung , Taiwan

6. Mechanical Engineering Department, College of Engineering , Imam Mohammad Ibn Saud Islamic University , Riyadh , Saudi Arabia

7. Laboratory of Metrology and Energy systems , University of Monastir , Monastir 5000 , Tunisia

8. Department of Electronics Engineering, Community College , University of Ha’il , Ha’il , Saudi Arabia

9. Control & Energies Management Laboratory (CEM-Lab), National Engineering School of Sfax , University of Sfax , Sfax , Tunisia

Abstract

Abstract Three-dimensional investigation has been carried out to simulate buoyancy induced heat transfer and fluid flow as well as entropy creation inside C-shaped enclosure charged with based water CNT–Al2O3 (15–85%) hybrid nanofluid. Left side is isothermally heated while the vertical portions of the right wall are isothermally cooled. Effects of various parameters on the flow behavior and the produced irreversibilities, namely the cavity aspect ratio (0.1 ≤ Ar ≤ 0.4), Rayleigh number (103 ≤ Ra ≤ 106) and volumetric fraction of hybrid nanofluid (0 ≤ φ ≤ 0.06) have been examined. It was revealed that the aspect ratio is the main controlling parameter of thermal energy transfer and generated entropy. In addition, for specific Ra, adding hybrid nanoparticles leads to the increase of the average Nusselt number while the highest produced entropy is observed with higher Rayleigh number. Moreover, the maximum Bejan number occurred for a shape factor Ar = 0.1 and Ra = 104 disregarding the hybrid nanoparticles volume fraction showing the dominance of thermal irreversibility over the viscous dissipation irreversibility in such conditions.

Publisher

Walter de Gruyter GmbH

Subject

Applied Mathematics,General Physics and Astronomy,Mechanics of Materials,Engineering (miscellaneous),Modeling and Simulation,Computational Mechanics,Statistical and Nonlinear Physics

Link

https://www.degruyter.com/document/doi/10.1515/ijnsns-2021-0246/pdf

Reference42 articles.

1. S. Ostrach, “Natural convection in enclosures,” J. Heat Tran., vol. 110, no. 4b, pp. 1175–1191, 1988. https://doi.org/10.1115/1.3250619.

2. G. De Vahl Davis, “Natural convection of air in a square cavity: a bench mark numerical solution,” Int. J. Numer. Methods Fluid., vol. 3, no. 3, pp. 249–264, 1983. https://doi.org/10.1002/fld.1650030305.

3. K. Khanafer, K. Vafai, and M. Lightstone, “Buoyancy-driven heat transfer enhancement in a two-dimensional enclosure utilizing nanofluids,” Int. J. Heat Mass Tran., vol. 46, pp. 3639–3653, 2003. https://doi.org/10.1016/s0017-9310(03)00156-x.

4. A. Rahimi, A. Kasaeipoor, and E. H. Malekshah, “Lattice Boltzmann simulation of natural convection and entropy generation in cavities filled with nanofluid in existence of internal rigid Bodies-Experimental thermo-physical properties,” J. Mol. Liq., vol. 242, pp. 580–593, 2017. https://doi.org/10.1016/j.molliq.2017.07.039.

5. A. Kasaeipoor, E. H. Malekshah, and L. Kolsi, “Free convection heat transfer and entropy generation analysis of MWCNT-MgO (15%−85%)/water nanofluid using Lattice Boltzmann method in cavity with refrigerant solid body-experimental thermophysical properties,” Powder Technol., vol. 322, pp. 9–23, 2017.

Cited by 5 articles. 订阅此论文施引文献订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献

1. A non-Newtonian thermal lattice Boltzmann method for simulation of Rayleigh–Bénard convection of power-law fluids;AIP Advances;2023-11-01

2. Numerical Analysis of Entropy Generation in a Double Stage Triangular Solar Still Using CNT-Nanofluid under Double-Diffusive Natural Convection;Mathematics;2023-06-23

3. Natural convection heat transfer in a nanofluid filled l-shaped enclosure with time-periodic temperature boundary and magnetic field;Alexandria Engineering Journal;2023-04

4. A study on cylindrical moving boundary problem with variable thermal conductivity and convection under the most realistic boundary conditions;International Communications in Heat and Mass Transfer;2022-11

5. Heat transfer enhancement in an inclined solar collector using partially driven cold wall and carbon nanotubes based nanofluid;Thermal Science;2022