Research Article
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Year 2017, Volume: 20 Issue: 4, 200 - 208, 29.11.2017
https://doi.org/10.5541/eoguijt.314253

Abstract

References

  • 1. Magherbi M, Abbassi H, Ben Brahim A. Entropy generation at the onset of natural convection. International Journal of Heat and Mass Transfer 2003; 46:3441-3450.
  • 2. Lam PAK, Arul Prakash K. A numerical study on natural convection and entropy generation in a porous enclosure with heat sources. International Journal of Heat and Mass Transfer 2014; 69:390-407.
  • 3. Famouri M, Hooman K. Entropy generation for natural convection by heated partitions in a cavity. International Communications in Heat and Mass Transfer 2008; 35:492-502.

Entropy generation in Rayleigh-Bénard problem for different geometrical cavities

Year 2017, Volume: 20 Issue: 4, 200 - 208, 29.11.2017
https://doi.org/10.5541/eoguijt.314253

Abstract

Entropy
generation for the natural convection phenomena is studied for different
geometrical cavities that have identical boundary conditions and unit area. The
key characteristic parameter in this study was the Grashof number. The effect
of Grashof number on Nusselt number and entropy generation has been studied
using finite element method. The developed models in this study were validated
against published work in the literature and results were found to be in close
agreement. Entropy generation was found to increase with an increase in the
Grashof number and the heat transfer was the dominant factor in increasing the
entropy generation. A lower entropy generation is generally expected with an
increase in the distance between the hot and cold boundaries. It is also noted
that the rate of entropy generation decreases slowly when the flow domain is
only slightly distorted, while the rate of entropy generation increases sharply
when the flow domain changes significantly.  

References

  • 1. Magherbi M, Abbassi H, Ben Brahim A. Entropy generation at the onset of natural convection. International Journal of Heat and Mass Transfer 2003; 46:3441-3450.
  • 2. Lam PAK, Arul Prakash K. A numerical study on natural convection and entropy generation in a porous enclosure with heat sources. International Journal of Heat and Mass Transfer 2014; 69:390-407.
  • 3. Famouri M, Hooman K. Entropy generation for natural convection by heated partitions in a cavity. International Communications in Heat and Mass Transfer 2008; 35:492-502.
There are 3 citations in total.

Details

Subjects Engineering
Journal Section Regular Original Research Article
Authors

Omar Al-abbasi

Publication Date November 29, 2017
Published in Issue Year 2017 Volume: 20 Issue: 4

Cite

APA Al-abbasi, O. (2017). Entropy generation in Rayleigh-Bénard problem for different geometrical cavities. International Journal of Thermodynamics, 20(4), 200-208. https://doi.org/10.5541/eoguijt.314253
AMA Al-abbasi O. Entropy generation in Rayleigh-Bénard problem for different geometrical cavities. International Journal of Thermodynamics. November 2017;20(4):200-208. doi:10.5541/eoguijt.314253
Chicago Al-abbasi, Omar. “Entropy Generation in Rayleigh-Bénard Problem for Different Geometrical Cavities”. International Journal of Thermodynamics 20, no. 4 (November 2017): 200-208. https://doi.org/10.5541/eoguijt.314253.
EndNote Al-abbasi O (November 1, 2017) Entropy generation in Rayleigh-Bénard problem for different geometrical cavities. International Journal of Thermodynamics 20 4 200–208.
IEEE O. Al-abbasi, “Entropy generation in Rayleigh-Bénard problem for different geometrical cavities”, International Journal of Thermodynamics, vol. 20, no. 4, pp. 200–208, 2017, doi: 10.5541/eoguijt.314253.
ISNAD Al-abbasi, Omar. “Entropy Generation in Rayleigh-Bénard Problem for Different Geometrical Cavities”. International Journal of Thermodynamics 20/4 (November 2017), 200-208. https://doi.org/10.5541/eoguijt.314253.
JAMA Al-abbasi O. Entropy generation in Rayleigh-Bénard problem for different geometrical cavities. International Journal of Thermodynamics. 2017;20:200–208.
MLA Al-abbasi, Omar. “Entropy Generation in Rayleigh-Bénard Problem for Different Geometrical Cavities”. International Journal of Thermodynamics, vol. 20, no. 4, 2017, pp. 200-8, doi:10.5541/eoguijt.314253.
Vancouver Al-abbasi O. Entropy generation in Rayleigh-Bénard problem for different geometrical cavities. International Journal of Thermodynamics. 2017;20(4):200-8.