Experimental and Numerical Investigations of Transient Natural Convection in Differentially Heated Air-Filled Tall Cavity

Lioua Kolsi; Mohamed Bechir Ben Hamida; Walid Hassen; Ahmed Kadhim Hussein; Mohamed Naceur Borjini; S. Sivasankaran; Suvash C. Saha; Mohamed M. Awad; Farshid Fathinia; Habib Ben Aissia

doi:doi:10.11648/j.ajme.20150102.12

Experimental and Numerical Investigations of Transient Natural Convection in Differentially Heated Air-Filled Tall Cavity

Lioua Kolsi, Mohamed Bechir Ben Hamida, Walid Hassen, Ahmed Kadhim Hussein, Mohamed Naceur Borjini, S. Sivasankaran, Suvash C. Saha, Mohamed M. Awad, Farshid Fathinia, Habib Ben Aissia

Published in American Journal of Modern Energy (Volume 1, Issue 2)

Received: 19 June 2015 Accepted: 30 June 2015 Published: 2 July 2015

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Abstract

The two-dimensional laminar natural convective transient flow characteristics in a differentially heated air-filled tall cavity with gradual heating are investigated both experimentally and numerically for various parameters such as Rayleigh number and temperature difference. Experimental computations are performed for temperature difference varying from (∆T = 5°C) to (∆T = 23°C) while the Rayleigh number varies from (Ra = 2929) to (Ra =11772) to cover a wide range of the flow field inside the cavity. The results show that as the Rayleigh number increases the flow becomes unstable. Also, the flow characteristics are observed to be multi-cellular and time variant especially at high Rayleigh numbers. Moreover, numerical computations are performed to compare with the experimental results.

Published in	American Journal of Modern Energy (Volume 1, Issue 2)
DOI	10.11648/j.ajme.20150102.12
Page(s)	30-43
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2015. Published by Science Publishing Group

Keywords

Natural Convection, Tall Cavity, Experimental Investigation, Transient, Gradual Heating

References

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APA Style

Lioua Kolsi, Mohamed Bechir Ben Hamida, Walid Hassen, Ahmed Kadhim Hussein, Mohamed Naceur Borjini, et al. (2015). Experimental and Numerical Investigations of Transient Natural Convection in Differentially Heated Air-Filled Tall Cavity. American Journal of Modern Energy, 1(2), 30-43. https://doi.org/10.11648/j.ajme.20150102.12

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ACS Style

Lioua Kolsi; Mohamed Bechir Ben Hamida; Walid Hassen; Ahmed Kadhim Hussein; Mohamed Naceur Borjini, et al. Experimental and Numerical Investigations of Transient Natural Convection in Differentially Heated Air-Filled Tall Cavity. Am. J. Mod. Energy 2015, 1(2), 30-43. doi: 10.11648/j.ajme.20150102.12

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AMA Style

Lioua Kolsi, Mohamed Bechir Ben Hamida, Walid Hassen, Ahmed Kadhim Hussein, Mohamed Naceur Borjini, et al. Experimental and Numerical Investigations of Transient Natural Convection in Differentially Heated Air-Filled Tall Cavity. Am J Mod Energy. 2015;1(2):30-43. doi: 10.11648/j.ajme.20150102.12

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@article{10.11648/j.ajme.20150102.12,
  author = {Lioua Kolsi and Mohamed Bechir Ben Hamida and Walid Hassen and Ahmed Kadhim Hussein and Mohamed Naceur Borjini and S. Sivasankaran and Suvash C. Saha and Mohamed M. Awad and Farshid Fathinia and Habib Ben Aissia},
  title = {Experimental and Numerical Investigations of Transient Natural Convection in Differentially Heated Air-Filled Tall Cavity},
  journal = {American Journal of Modern Energy},
  volume = {1},
  number = {2},
  pages = {30-43},
  doi = {10.11648/j.ajme.20150102.12},
  url = {https://doi.org/10.11648/j.ajme.20150102.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajme.20150102.12},
  abstract = {The two-dimensional laminar natural convective transient flow characteristics in a differentially heated air-filled tall cavity with gradual heating are investigated both experimentally and numerically for various parameters such as Rayleigh number and temperature difference. Experimental computations are performed for temperature difference varying from (∆T = 5°C) to (∆T = 23°C) while the Rayleigh number varies from (Ra = 2929) to (Ra =11772) to cover a wide range of the flow field inside the cavity. The results show that as the Rayleigh number increases the flow becomes unstable. Also, the flow characteristics are observed to be multi-cellular and time variant especially at high Rayleigh numbers. Moreover, numerical computations are performed to compare with the experimental results.},
 year = {2015}
}

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TY - JOUR
T1 - Experimental and Numerical Investigations of Transient Natural Convection in Differentially Heated Air-Filled Tall Cavity
AU - Lioua Kolsi
AU - Mohamed Bechir Ben Hamida
AU - Walid Hassen
AU - Ahmed Kadhim Hussein
AU - Mohamed Naceur Borjini
AU - S. Sivasankaran
AU - Suvash C. Saha
AU - Mohamed M. Awad
AU - Farshid Fathinia
AU - Habib Ben Aissia
Y1 - 2015/07/02
PY - 2015
N1 - https://doi.org/10.11648/j.ajme.20150102.12
DO - 10.11648/j.ajme.20150102.12
T2 - American Journal of Modern Energy
JF - American Journal of Modern Energy
JO - American Journal of Modern Energy
SP - 30
EP - 43
PB - Science Publishing Group
SN - 2575-3797
UR - https://doi.org/10.11648/j.ajme.20150102.12
AB - The two-dimensional laminar natural convective transient flow characteristics in a differentially heated air-filled tall cavity with gradual heating are investigated both experimentally and numerically for various parameters such as Rayleigh number and temperature difference. Experimental computations are performed for temperature difference varying from (∆T = 5°C) to (∆T = 23°C) while the Rayleigh number varies from (Ra = 2929) to (Ra =11772) to cover a wide range of the flow field inside the cavity. The results show that as the Rayleigh number increases the flow becomes unstable. Also, the flow characteristics are observed to be multi-cellular and time variant especially at high Rayleigh numbers. Moreover, numerical computations are performed to compare with the experimental results.
VL - 1
IS - 2
ER -

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Author Information

Lioua Kolsi

College of Engineering, Mechanical Engineering Department, Ha?l University, Ha?l City, Saudi Arabia
Mohamed Bechir Ben Hamida

High School of Sciences and Technology of Hammam Sousse (ESSTHS), Department of Physics, University of Sousse, Sousse, Tunisia
Walid Hassen

Research Unit of Metrology and Energy Systems, National Engineering School, Energy Engineering Department, University of Monastir, Monastir city, Tunisia
Ahmed Kadhim Hussein

College of Engineering, Mechanical Engineering Department, Babylon University, Babylon City, Hilla, Iraq
Mohamed Naceur Borjini

Research Unit of Metrology and Energy Systems, National Engineering School, Energy Engineering Department, University of Monastir, Monastir city, Tunisia
S. Sivasankaran

Institute of Mathematical Sciences, University of Malaya, Kuala Lumpur, Malaysia
Suvash C. Saha

School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane QLD, Australia
Mohamed M. Awad

Mechanical Power Engineering Department, Faculty of Engineering, Mansoura University, Mansoura city, Egypt
Farshid Fathinia

Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, UTM Johor Bahru, Malaysia
Habib Ben Aissia

Research Unit of Metrology and Energy Systems, National Engineering School, Energy Engineering Department, University of Monastir, Monastir city, Tunisia

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APA Style

Lioua Kolsi, Mohamed Bechir Ben Hamida, Walid Hassen, Ahmed Kadhim Hussein, Mohamed Naceur Borjini, et al. (2015). Experimental and Numerical Investigations of Transient Natural Convection in Differentially Heated Air-Filled Tall Cavity. American Journal of Modern Energy, 1(2), 30-43. https://doi.org/10.11648/j.ajme.20150102.12

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ACS Style

Lioua Kolsi; Mohamed Bechir Ben Hamida; Walid Hassen; Ahmed Kadhim Hussein; Mohamed Naceur Borjini, et al. Experimental and Numerical Investigations of Transient Natural Convection in Differentially Heated Air-Filled Tall Cavity. Am. J. Mod. Energy 2015, 1(2), 30-43. doi: 10.11648/j.ajme.20150102.12

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AMA Style

Lioua Kolsi, Mohamed Bechir Ben Hamida, Walid Hassen, Ahmed Kadhim Hussein, Mohamed Naceur Borjini, et al. Experimental and Numerical Investigations of Transient Natural Convection in Differentially Heated Air-Filled Tall Cavity. Am J Mod Energy. 2015;1(2):30-43. doi: 10.11648/j.ajme.20150102.12

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@article{10.11648/j.ajme.20150102.12,
  author = {Lioua Kolsi and Mohamed Bechir Ben Hamida and Walid Hassen and Ahmed Kadhim Hussein and Mohamed Naceur Borjini and S. Sivasankaran and Suvash C. Saha and Mohamed M. Awad and Farshid Fathinia and Habib Ben Aissia},
  title = {Experimental and Numerical Investigations of Transient Natural Convection in Differentially Heated Air-Filled Tall Cavity},
  journal = {American Journal of Modern Energy},
  volume = {1},
  number = {2},
  pages = {30-43},
  doi = {10.11648/j.ajme.20150102.12},
  url = {https://doi.org/10.11648/j.ajme.20150102.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajme.20150102.12},
  abstract = {The two-dimensional laminar natural convective transient flow characteristics in a differentially heated air-filled tall cavity with gradual heating are investigated both experimentally and numerically for various parameters such as Rayleigh number and temperature difference. Experimental computations are performed for temperature difference varying from (∆T = 5°C) to (∆T = 23°C) while the Rayleigh number varies from (Ra = 2929) to (Ra =11772) to cover a wide range of the flow field inside the cavity. The results show that as the Rayleigh number increases the flow becomes unstable. Also, the flow characteristics are observed to be multi-cellular and time variant especially at high Rayleigh numbers. Moreover, numerical computations are performed to compare with the experimental results.},
 year = {2015}
}

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