CFD investigation of the unsteady airflow and pressure characteristics in the underground highway station with the train passing
A numerical research is conducted to clarify the unsteady airflow and pressure characteristics in the full-scale underground highway station to ensure the passenger safety and energy saving in Heating, ventilation and air-conditioning design. Results show pressure characteristics in the tunnel chang...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2023-05-01
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| Series: | Journal of Asian Architecture and Building Engineering |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/13467581.2022.2077737 |
| _version_ | 1827925385851961344 |
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| author | Yongliang Xie Qizhang Li Fujian Jiang |
| author_facet | Yongliang Xie Qizhang Li Fujian Jiang |
| author_sort | Yongliang Xie |
| collection | DOAJ |
| description | A numerical research is conducted to clarify the unsteady airflow and pressure characteristics in the full-scale underground highway station to ensure the passenger safety and energy saving in Heating, ventilation and air-conditioning design. Results show pressure characteristics in the tunnel change greatly due to the propagations of compression and expansion waves. The propagations of compression and expansion waves determine the local pressures together. For the first two locations X = −900 m and X = −800 m, the pressure climbs to the peak when the head of the train reaches. However, for the other locations, the pressure is not the maximum when the train reaches, due to the effect of Initial Expansion Wave (IEW). With the raising of train speeds, the positive maximum velocities are increased by 32.60% and 47.58%, respectively. It should be noted that there are two peak values of horizontal velocities successively, with the train speed of 250 km/h and 300 km/h. |
| first_indexed | 2024-03-13T05:24:04Z |
| format | Article |
| id | doaj.art-368039de305d4125ba29bb38cc4ec598 |
| institution | Directory Open Access Journal |
| issn | 1347-2852 |
| language | English |
| last_indexed | 2024-03-13T05:24:04Z |
| publishDate | 2023-05-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Asian Architecture and Building Engineering |
| spelling | doaj.art-368039de305d4125ba29bb38cc4ec5982023-06-15T09:22:31ZengTaylor & Francis GroupJournal of Asian Architecture and Building Engineering1347-28522023-05-012231268128310.1080/13467581.2022.20777372077737CFD investigation of the unsteady airflow and pressure characteristics in the underground highway station with the train passingYongliang Xie0Qizhang Li1Fujian Jiang2Southwest Jiaotong UniversitySouthwest Jiaotong UniversitySouthwest Jiaotong UniversityA numerical research is conducted to clarify the unsteady airflow and pressure characteristics in the full-scale underground highway station to ensure the passenger safety and energy saving in Heating, ventilation and air-conditioning design. Results show pressure characteristics in the tunnel change greatly due to the propagations of compression and expansion waves. The propagations of compression and expansion waves determine the local pressures together. For the first two locations X = −900 m and X = −800 m, the pressure climbs to the peak when the head of the train reaches. However, for the other locations, the pressure is not the maximum when the train reaches, due to the effect of Initial Expansion Wave (IEW). With the raising of train speeds, the positive maximum velocities are increased by 32.60% and 47.58%, respectively. It should be noted that there are two peak values of horizontal velocities successively, with the train speed of 250 km/h and 300 km/h.http://dx.doi.org/10.1080/13467581.2022.2077737underground highway stationflow fieldpressure characteristicstunneltrain passingpiston effect |
| spellingShingle | Yongliang Xie Qizhang Li Fujian Jiang CFD investigation of the unsteady airflow and pressure characteristics in the underground highway station with the train passing Journal of Asian Architecture and Building Engineering underground highway station flow field pressure characteristics tunnel train passing piston effect |
| title | CFD investigation of the unsteady airflow and pressure characteristics in the underground highway station with the train passing |
| title_full | CFD investigation of the unsteady airflow and pressure characteristics in the underground highway station with the train passing |
| title_fullStr | CFD investigation of the unsteady airflow and pressure characteristics in the underground highway station with the train passing |
| title_full_unstemmed | CFD investigation of the unsteady airflow and pressure characteristics in the underground highway station with the train passing |
| title_short | CFD investigation of the unsteady airflow and pressure characteristics in the underground highway station with the train passing |
| title_sort | cfd investigation of the unsteady airflow and pressure characteristics in the underground highway station with the train passing |
| topic | underground highway station flow field pressure characteristics tunnel train passing piston effect |
| url | http://dx.doi.org/10.1080/13467581.2022.2077737 |
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