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 |
Computational Fluid Dynamics (CFD), Air Flow Rate, Stations, Air Treatment and Improvement
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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
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
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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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}
}
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 -
Department of Mining and Metallurgical Engineering, Engineering College, Assiut University, Assiut, Egypt
Department of Mining and Metallurgical Engineering, Engineering College, Assiut University, Assiut, Egypt
Department of Mining and Metallurgical Engineering, Engineering College, Assiut University, Assiut, Egypt
