CFD Application to Estimate Air Flow Rate for Normal Ventilation in Metro Trains and Stations

Mohamed Abuelkassem Mohamed; Elseman Ibrahim Abdelrasoul; Sayed Ramadan Hamed

doi:doi:10.11648/j.ajset.20230804.18

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CFD Application to Estimate Air Flow Rate for Normal Ventilation in Metro Trains and Stations

Mohamed Abuelkassem Mohamed, Elseman Ibrahim Abdelrasoul, Sayed Ramadan Hamed^*

Published in American Journal of Science, Engineering and Technology (Volume 8, Issue 4)

Received: 6 October 2023 Accepted: 6 November 2023 Published: 17 November 2023

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Abstract

Due to the problem of lacking enough fresh air for passengers in underground metro stations, increasing attention has been paid to improving ventilation in underground metro stations. In this paper, the distribution characteristics of airflow fields, geometry of the station, and the influence of airflow rate changes on passengers’ ventilation conditions have been investigated and simulated according to computational fluid dynamics (CFD) theory. In addition, the volume of the stations was treated with a central air conditioning system, including several air handling units (AHU) connected to chilled water. Air flow for trains and stations has been calculated and compared with the actual data of the National Authority for Tunnels (NAT). It has been found that the highest air flow rate Q for Attaba station is 24.97 m³/s at ticket hall level, and the lowest air flow rate is 5.23 m³/s at platform level. Also, the required air flow rate is 111.02 m³/s for trains has been calculated. This value is acceptable and suitable in comparison to the actual results from the NAT. This is to reduce the necessary heat and improve the air quality inside underground metro stations. It is concluded that, in cases where an air flow rate is required in stations, the efficiency of the fans must be superior to 70%. The rotation speed of the fans will range from 750 to 1480 revolutions per minute (r.p.m).

Published in	American Journal of Science, Engineering and Technology (Volume 8, Issue 4)
DOI	10.11648/j.ajset.20230804.18
Page(s)	226-234
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), 2023. Published by Science Publishing Group

Keywords

Computational Fluid Dynamics (CFD), Air Flow Rate, Stations, Air Treatment and Improvement

References

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[15]	Jiangyan, M., Zhang, X. in., Angui, L. i., Baoshun, D., Wenchao, L. v., Yongzhen, Guo., Wenrong, Z., and Lin. Huang. Analyses of the improvement of subway station thermal environment in northern severe cold regions. Building and environment, 2018. 143: pp. 579-590.
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APA Style

Abuelkassem Mohamed, M., Ibrahim Abdelrasoul, E., Ramadan Hamed, S. (2023). CFD Application to Estimate Air Flow Rate for Normal Ventilation in Metro Trains and Stations. American Journal of Science, Engineering and Technology, 8(4), 226-234. https://doi.org/10.11648/j.ajset.20230804.18

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ACS Style

Abuelkassem Mohamed, M.; Ibrahim Abdelrasoul, E.; Ramadan Hamed, S. CFD Application to Estimate Air Flow Rate for Normal Ventilation in Metro Trains and Stations. Am. J. Sci. Eng. Technol. 2023, 8(4), 226-234. doi: 10.11648/j.ajset.20230804.18

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AMA Style

Abuelkassem Mohamed M, Ibrahim Abdelrasoul E, Ramadan Hamed S. CFD Application to Estimate Air Flow Rate for Normal Ventilation in Metro Trains and Stations. Am J Sci Eng Technol. 2023;8(4):226-234. doi: 10.11648/j.ajset.20230804.18

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@article{10.11648/j.ajset.20230804.18,
  author = {Mohamed Abuelkassem Mohamed and Elseman Ibrahim Abdelrasoul and Sayed Ramadan Hamed},
  title = {CFD Application to Estimate Air Flow Rate for Normal Ventilation in Metro Trains and Stations},
  journal = {American Journal of Science, Engineering and Technology},
  volume = {8},
  number = {4},
  pages = {226-234},
  doi = {10.11648/j.ajset.20230804.18},
  url = {https://doi.org/10.11648/j.ajset.20230804.18},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajset.20230804.18},
  abstract = {Due to the problem of lacking enough fresh air for passengers in underground metro stations, increasing attention has been paid to improving ventilation in underground metro stations. In this paper, the distribution characteristics of airflow fields, geometry of the station, and the influence of airflow rate changes on passengers’ ventilation conditions have been investigated and simulated according to computational fluid dynamics (CFD) theory. In addition, the volume of the stations was treated with a central air conditioning system, including several air handling units (AHU) connected to chilled water. Air flow for trains and stations has been calculated and compared with the actual data of the National Authority for Tunnels (NAT). It has been found that the highest air flow rate Q for Attaba station is 24.97 m3/s at ticket hall level, and the lowest air flow rate is 5.23 m3/s at platform level. Also, the required air flow rate is 111.02 m3/s for trains has been calculated. This value is acceptable and suitable in comparison to the actual results from the NAT. This is to reduce the necessary heat and improve the air quality inside underground metro stations. It is concluded that, in cases where an air flow rate is required in stations, the efficiency of the fans must be superior to 70%. The rotation speed of the fans will range from 750 to 1480 revolutions per minute (r.p.m).
},
 year = {2023}
}

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TY  - JOUR
T1  - CFD Application to Estimate Air Flow Rate for Normal Ventilation in Metro Trains and Stations
AU  - Mohamed Abuelkassem Mohamed
AU  - Elseman Ibrahim Abdelrasoul
AU  - Sayed Ramadan Hamed
Y1  - 2023/11/17
PY  - 2023
N1  - https://doi.org/10.11648/j.ajset.20230804.18
DO  - 10.11648/j.ajset.20230804.18
T2  - American Journal of Science, Engineering and Technology
JF  - American Journal of Science, Engineering and Technology
JO  - American Journal of Science, Engineering and Technology
SP  - 226
EP  - 234
PB  - Science Publishing Group
SN  - 2578-8353
UR  - https://doi.org/10.11648/j.ajset.20230804.18
AB  - Due to the problem of lacking enough fresh air for passengers in underground metro stations, increasing attention has been paid to improving ventilation in underground metro stations. In this paper, the distribution characteristics of airflow fields, geometry of the station, and the influence of airflow rate changes on passengers’ ventilation conditions have been investigated and simulated according to computational fluid dynamics (CFD) theory. In addition, the volume of the stations was treated with a central air conditioning system, including several air handling units (AHU) connected to chilled water. Air flow for trains and stations has been calculated and compared with the actual data of the National Authority for Tunnels (NAT). It has been found that the highest air flow rate Q for Attaba station is 24.97 m3/s at ticket hall level, and the lowest air flow rate is 5.23 m3/s at platform level. Also, the required air flow rate is 111.02 m3/s for trains has been calculated. This value is acceptable and suitable in comparison to the actual results from the NAT. This is to reduce the necessary heat and improve the air quality inside underground metro stations. It is concluded that, in cases where an air flow rate is required in stations, the efficiency of the fans must be superior to 70%. The rotation speed of the fans will range from 750 to 1480 revolutions per minute (r.p.m).

VL  - 8
IS  - 4
ER  -

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Author Information

Mohamed Abuelkassem Mohamed

Department of Mining and Metallurgical Engineering, Engineering College, Assiut University, Assiut, Egypt

Contact Email
Elseman Ibrahim Abdelrasoul

Department of Mining and Metallurgical Engineering, Engineering College, Assiut University, Assiut, Egypt

Contact Email
Sayed Ramadan Hamed

Department of Mining and Metallurgical Engineering, Engineering College, Assiut University, Assiut, Egypt

Contact Email

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Plain Text BibTeX RIS

APA Style

Abuelkassem Mohamed, M., Ibrahim Abdelrasoul, E., Ramadan Hamed, S. (2023). CFD Application to Estimate Air Flow Rate for Normal Ventilation in Metro Trains and Stations. American Journal of Science, Engineering and Technology, 8(4), 226-234. https://doi.org/10.11648/j.ajset.20230804.18

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ACS Style

Abuelkassem Mohamed, M.; Ibrahim Abdelrasoul, E.; Ramadan Hamed, S. CFD Application to Estimate Air Flow Rate for Normal Ventilation in Metro Trains and Stations. Am. J. Sci. Eng. Technol. 2023, 8(4), 226-234. doi: 10.11648/j.ajset.20230804.18

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AMA Style

Abuelkassem Mohamed M, Ibrahim Abdelrasoul E, Ramadan Hamed S. CFD Application to Estimate Air Flow Rate for Normal Ventilation in Metro Trains and Stations. Am J Sci Eng Technol. 2023;8(4):226-234. doi: 10.11648/j.ajset.20230804.18

Copy | Download

@article{10.11648/j.ajset.20230804.18,
  author = {Mohamed Abuelkassem Mohamed and Elseman Ibrahim Abdelrasoul and Sayed Ramadan Hamed},
  title = {CFD Application to Estimate Air Flow Rate for Normal Ventilation in Metro Trains and Stations},
  journal = {American Journal of Science, Engineering and Technology},
  volume = {8},
  number = {4},
  pages = {226-234},
  doi = {10.11648/j.ajset.20230804.18},
  url = {https://doi.org/10.11648/j.ajset.20230804.18},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajset.20230804.18},
  abstract = {Due to the problem of lacking enough fresh air for passengers in underground metro stations, increasing attention has been paid to improving ventilation in underground metro stations. In this paper, the distribution characteristics of airflow fields, geometry of the station, and the influence of airflow rate changes on passengers’ ventilation conditions have been investigated and simulated according to computational fluid dynamics (CFD) theory. In addition, the volume of the stations was treated with a central air conditioning system, including several air handling units (AHU) connected to chilled water. Air flow for trains and stations has been calculated and compared with the actual data of the National Authority for Tunnels (NAT). It has been found that the highest air flow rate Q for Attaba station is 24.97 m3/s at ticket hall level, and the lowest air flow rate is 5.23 m3/s at platform level. Also, the required air flow rate is 111.02 m3/s for trains has been calculated. This value is acceptable and suitable in comparison to the actual results from the NAT. This is to reduce the necessary heat and improve the air quality inside underground metro stations. It is concluded that, in cases where an air flow rate is required in stations, the efficiency of the fans must be superior to 70%. The rotation speed of the fans will range from 750 to 1480 revolutions per minute (r.p.m).
},
 year = {2023}
}

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TY  - JOUR
T1  - CFD Application to Estimate Air Flow Rate for Normal Ventilation in Metro Trains and Stations
AU  - Mohamed Abuelkassem Mohamed
AU  - Elseman Ibrahim Abdelrasoul
AU  - Sayed Ramadan Hamed
Y1  - 2023/11/17
PY  - 2023
N1  - https://doi.org/10.11648/j.ajset.20230804.18
DO  - 10.11648/j.ajset.20230804.18
T2  - American Journal of Science, Engineering and Technology
JF  - American Journal of Science, Engineering and Technology
JO  - American Journal of Science, Engineering and Technology
SP  - 226
EP  - 234
PB  - Science Publishing Group
SN  - 2578-8353
UR  - https://doi.org/10.11648/j.ajset.20230804.18
AB  - Due to the problem of lacking enough fresh air for passengers in underground metro stations, increasing attention has been paid to improving ventilation in underground metro stations. In this paper, the distribution characteristics of airflow fields, geometry of the station, and the influence of airflow rate changes on passengers’ ventilation conditions have been investigated and simulated according to computational fluid dynamics (CFD) theory. In addition, the volume of the stations was treated with a central air conditioning system, including several air handling units (AHU) connected to chilled water. Air flow for trains and stations has been calculated and compared with the actual data of the National Authority for Tunnels (NAT). It has been found that the highest air flow rate Q for Attaba station is 24.97 m3/s at ticket hall level, and the lowest air flow rate is 5.23 m3/s at platform level. Also, the required air flow rate is 111.02 m3/s for trains has been calculated. This value is acceptable and suitable in comparison to the actual results from the NAT. This is to reduce the necessary heat and improve the air quality inside underground metro stations. It is concluded that, in cases where an air flow rate is required in stations, the efficiency of the fans must be superior to 70%. The rotation speed of the fans will range from 750 to 1480 revolutions per minute (r.p.m).

VL  - 8
IS  - 4
ER  -

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