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CYLINDRICAL OBSTACLE EFFECT ON CONVECTION INSIDE AN INCLINED ENCLOSURE FILLED WITH A NANOFLUID
Authors:
Nadia Kaddouri1
,
Sahraoui Kherris2
,
Kouider Mostefa2
,
Said Mekroussi1
,
Momen SM Saleh3
,
Djallel Zebbar2
1Research Laboratory of Industrial Technologies, Faculty of Applied Sciences, University of Tiaret, B.P. 78 Zaâroura 14000 Tiaret, Algeria
2Laboratory of Mechanical Engineering, Materials and Structures, Tissemsilt University, Benhamouda B.P. 182, 38010 Tissemsilt, Algeria
3Laboratory of Materials and Energy Engineering (LGEM), University of Mohamed Khider Biskra, Algeria
Received: 25 December 2023
Revised: 24 February 2024
Accepted: 8 March 2024
Published: 31 March 2024
Abstract:
This study investigated the impact of a cylindrical obstacle on convection in an inclined square cavity filled with water-Al2O3 nanofluid. Using the finite volume method, the problem was resolved by having the inner cylinder rotate adiabatically while other walls were thermally insulated. Additionally, the bottom wall was hotter than the top. The study examined the effects of cylindrical obstacle radius (0.1 ≤ R ≤ 0.2), rotation speed (-500 ≤ Ω ≤ 500), Richardson number (0.01 ≤ Ri ≤ 100), volumetric nanoparticle fraction (0.02), and Grashof number (Gr=104) on heat transfer rate or Nusselt number. The results were compared with previous literature, and the influence of the cylindrical obstacle rotational speed on convection flow was evaluated. An increase in the counterclockwise angular rotating speed resulted in higher nanofluid flux. The heat transmission coefficient increased as the Richardson number decreased. The use of nanofluid in the enclosure increased the coefficient of heat flow through mixed convection. Finally, the study showed that the convection heat exchange is enhanced with the increase in the radius. Moreover, an enhancement of the Nusselt number around 46% was reported for the cylinder, under Gr=10000, ∅=0.02, γ=45° and Ri=10.
Keywords:
Mixed convection, Nanofluids, Rotating cylindrical obstacle, Heat exchange, Water-Al2O3, Radius, Rotational speed
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© 2024 by the authors. This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0)
Volume 9
Number 1
March 2024
Last Edition
Volume 9
Number 1
March 2024
How to Cite
N. Kaddouri, S. Kherris, K. Mostefa, S. Mekroussi, M.S.M. Saleh, D. Zebbar, Cylindrical Obstacle Effect on Convection Inside an Inclined Enclosure Filled with a Nanofluid. Applied Engineering Letters, 9(1), 2024: 22-36.
https://doi.org/10.46793/aeletters.2024.9.1.3
More Citation Formats
Kaddouri, N., Kherris, S., Mostefa, K., Mekroussi, S., Saleh, M.S.M., & Zebbar, D. (2024). Cylindrical Obstacle Effect on Convection Inside an Inclined Enclosure Filled with a Nanofluid. Applied Engineering Letters, 9(1), 22-36.
https://doi.org/10.46793/aeletters.2024.9.1.3
Kaddouri, Nadia, et al. “Cylindrical Obstacle Effect on Convection Inside an Inclined Enclosure Filled with a Nanofluid.“ Applied Engineering Letters, vol. 9, no. 1, 2024, pp. 22-36.
https://doi.org/10.46793/aeletters.2024.9.1.3
Kaddouri, Nadia, Sahraoui Kherris, Kouider Mostefa, Said Mekroussi, Momen SM Saleh, and Djallel Zebbar. 2024. “Cylindrical Obstacle Effect on Convection Inside an Inclined Enclosure Filled with a Nanofluid.“ Applied Engineering Letters, 9 (1): 22-36.
https://doi.org/10.46793/aeletters.2024.9.1.3.
Kaddouri, N., Kherris, S., Mostefa, K., Mekroussi, S., Saleh, M.S.M. and Zebbar, D. (2024). Cylindrical Obstacle Effect on Convection Inside an Inclined Enclosure Filled with a Nanofluid. Applied Engineering Letters, 9(1), pp. 22-36.
doi: 10.46793/aeletters.2024.9.1.3.