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Buoyancy-Driven Flow and Forced Flow of Complex Fluid Within a Triangular Chamber with a Rotating Body

Youcef LAKAHAL

Youcef LAKAHAL

Faculty of Mechanical Engineering, University of Sciences and Technology of OranEl-Menaouer, Oran, Algeria
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LAKAHAL, Youcef
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Houssem LAIDOUDI

Houssem LAIDOUDI

Faculty of Mechanical Engineering, University of Sciences and Technology of OranEl-Menaouer, Oran, Algeria
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LAIDOUDI, Houssem
  
06. Juni 2025
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Online veröffentlicht: 06. Juni 2025
Seitenbereich: 224 - 240
Eingereicht: 13. Okt. 2024
Akzeptiert: 10. Feb. 2025
DOI: https://doi.org/10.2478/ama-2025-0027
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© 2025 Youcef LAKAHAL et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1.

Diagrammatic representation of the problem
Diagrammatic representation of the problem

Fig. 2.

The structure of the grid used for the calculations
The structure of the grid used for the calculations

Fig. 3.

Residual Convergence for Re = 5, Ri = 0, n = 0.6 and β = 0.12
Residual Convergence for Re = 5, Ri = 0, n = 0.6 and β = 0.12

Fig. 4.

Validation tests
Validation tests

Fig. 5.

Streamlines for the case of blockage ratio of 0.12 at Re = 5
Streamlines for the case of blockage ratio of 0.12 at Re = 5

Fig. 6.

Streamlines for the case of blockage ratio of 0.12 at Re = 10
Streamlines for the case of blockage ratio of 0.12 at Re = 10

Fig. 7.

Isotherms for the case of blockage ratio of 0.12 at Re = 5
Isotherms for the case of blockage ratio of 0.12 at Re = 5

Fig. 8.

Isotherms for the case of blockage ratio of 0.12 at Re = 10
Isotherms for the case of blockage ratio of 0.12 at Re = 10

Fig. 9.

Values of Nu versus Ri and n: a) for Re = 1; b) Re = 5; and c) Re = 10
Values of Nu versus Ri and n: a) for Re = 1; b) Re = 5; and c) Re = 10

Fig. 10.

Streamlines for the case of blockage ratio of 0.24 at Re = 10
Streamlines for the case of blockage ratio of 0.24 at Re = 10

Fig. 11.

Isotherms for the case of blockage ratio of 0.24 at Re = 10
Isotherms for the case of blockage ratio of 0.24 at Re = 10

Fig. 12.

Values of Nu versus Ri and n: a) for Re = 1; b) Re = 5; and c) Re = 10
Values of Nu versus Ri and n: a) for Re = 1; b) Re = 5; and c) Re = 10

Fig. 13.

Streamlines for the case of blockage ratio of 0.36 at Re = 10
Streamlines for the case of blockage ratio of 0.36 at Re = 10

Fig. 14.

Isotherms for the case of blockage ratio of 0.36 at Re = 10
Isotherms for the case of blockage ratio of 0.36 at Re = 10

Fig. 15.

Values of Nu versus Ri and n: a) for Re = 1; b) Re = 5; and c) Re = 10
Values of Nu versus Ri and n: a) for Re = 1; b) Re = 5; and c) Re = 10

Fig. 16.

Values of Nu with Ri for the three cases at Re = 10 and n = 0.6
Values of Nu with Ri for the three cases at Re = 10 and n = 0.6

Grid independency test for n = 1_6, Re = 10, Ri = 2 and β = 0_12

Mesh Elements Nu Difference % CPU Seconds
M1 130,000 3.41930 1.478 622
M2 260,000 3.36876 0.011 1021
M3 520,000 3.36913 - -
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