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DC 欄位 | 值 | 語言 |
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dc.contributor.advisor | 陳希立 | zh_TW |
dc.contributor.advisor | Sih-Li Chen | en |
dc.contributor.author | 陳冠綸 | zh_TW |
dc.contributor.author | Guan-Lun Chen | en |
dc.date.accessioned | 2024-02-20T16:13:38Z | - |
dc.date.available | 2024-02-21 | - |
dc.date.copyright | 2024-02-20 | - |
dc.date.issued | 2024 | - |
dc.date.submitted | 2024-01-30 | - |
dc.identifier.citation | 1. Ruichang Mao, Yi Bao, Huabo Duan, and Gang Liu, “Global urban subway development, construction material stocks, and embodied carbon emissions”, Humanities and Social Sciences Communications, 8(83), 2021
2. Valensi, J., “Piston Effects in the Underground Stations of Marseille Metro”, The Third International Symposium on the Aerodynamics and Ventilation of Vehicle Tunnels, BHRA Fluid Engineering, Vol. 1, pp. 47–56, 1979. 3. J.K. Mok, and J. Yoo, “Numerical study on high speed train and tunnel hood interaction”, Journal of Wind Engineering and Industrial Aerodynamics, Vol.89, pp.17-29, 2001 4. Ming-Tsun Ke , Tsung-Che Cheng, and Wen-Por Wang, “Numerical simulation for optimizing the design of subway environmental control system”, Building and Environment, Vol. 37, pp. 1139 – 1152, 2002 5. 丁俊智,”地下捷運系統性能式設計之標準方法建立”,國立台灣大學機械工程研究所博士論文,2002 6. Feng-Dong Yuan, and Shi-Jun You, “CFD simulation and optimization of the ventilation for subway side-platform”, Tunnelling and Underground Space Technology, Vol. 22, pp. 474–482, 2007 7. Chi-Ji Lin, Yew Khoy Chuah, and Chia-Wei Liu, “A study on underground tunnel ventilation for piston effects influenced by draught relief shaft in subway system”, Applied Thermal Engineering, Vol. 28, pp. 372–379, 2008 8. Li Jia, Peng Huang, and Lixin Yang, “Numerical Simulation of Flow Characteristics in a Subway Station”, Heat Transfer—Asian Research, 38(5), 2009 9. 翁英哲,”捷運電聯車之活塞效應對旅客舒適度與月台門風壓之影響”,2011 10. Song Pan, Li Fan, Jiaping Liu, Jingchao Xie, Yuying Sun, Na Cui, Lili Zhang, and Binyang Zheng, “A Review of the Piston Effect in Subway Stations”, Advances in Mechanical Engineering, Vol. 5, 2013 11. Marta López González, Mónica Galdo Vega, Jesús Manuel Fernández Oro, and Eduardo Blanco Marigorta, “Numerical modeling of the piston effect in longitudinal ventilation”, Tunnelling and Underground Space Technology, Vol. 40, pp. 22–37, 2014 12. Peng Xue, Shijun You, Jiangyue Chao, and Tianzhen Ye, “Numerical investigation of unsteady airflow in subway influenced by piston effect based on dynamic mesh”, Tunnelling and Underground Space Technology,Vol. 40, pp. 174–181, 2014 13. Daniel Cross, Ben Hughes, Derek Ingham, and Lin Ma, “Enhancing the piston effect in underground railway tunnels”, Tunnelling and Underground Space Technology, Vol. 61, pp. 71–81, 2017 14. Guixin Han, Zhong Luo, Yonghang Sun, and Chaoshuai Li, “Time-variant characteristic under the piston wind on subway tunnel billboard”, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 233(16), pp. 5637-5646, 2019 15. Minzhang Liu, Huan Zhang, Chunguang Zhu, Wandong Zheng, and Shijun You, “Theoretical modeling of piston wind induced by multiple trains in longitudinal tunnel”, Sustainable Cities and Society, Vol. 57, 102127, 2020 16. PHOENICS Tutorials, CHAM 17. B.E. Launder, and D.B. Spalding, “Mathematical models of turbulence”, London: Academic Press, 1974 18. Y.S. Chen, and S.W. Kim, “Computation of turbulent flows using an extended k–ε turbulence closure model”, NASA CR-179204, 1987 19. J.H. Ferziger, and M. Peri𝑐𝑐́, “Computational Methods for Fluid Dynamics(Third Edition)”, pp. 71-82, 2002 20. Jiyuan Tu, Guan-Heng Yeoh, and Chaoqun Liu, “Computational Fluid Dynamics (Third Edition)”, pp. 125-154, 2018 21. B.P. Leonard, “A stable and accurate convective modelling procedure based on quadratic upstream interpolation", Computer Methods in Applied Mechanics and Engineering, Vol. 19, Issue 1, 1979 22. S.V. Patankar, “Numerical Heat Transfer and Fluid Flow”, Series in Computational Methods in Mechanics and Thermal Sciences, HEMISPHERE PUBLISHING CORPORATION, 1980 23. S.V. Patankar, and D.B. Spalding, “A calculation procedure for heat, mass and momentum transfer in three-dimensional parabolic flows”, Numerical Prediction of Flow, Heat Transfer, Turbulence and Combustion, pp. 54-73, 1983 24. M.R. Malin, and N.P. Waterson, “Schemes for Convection Discretisation in the Phoenics CFD Code”, The PHOENICS Journal of Computational Fluid Dynamics and its Applications, Vol. 12, pp. 173-201, 1999 25. D.B. Spalding, “A novel finite-difference formulation for differential expressions involving both first and second derivatives”, International Journal for Numerical Methods in Engineering, Vol.4, Issue 4, pp. 551-559, 1972 | - |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/91617 | - |
dc.description.abstract | 當前交通發達,搭乘大眾運輸可說是大家的日常,其中又以軌道運輸最為重要,因為人們較能準確掌握出發即抵達的時間;在都市擴張下,軌道運輸的發展方向已趨向地下化,然而鐵路地下化所面臨的考驗是:在狹窄的空間下,列車高速經過帶來的風場變化,是否會對人體或者軌道、車站設施造成安全上之疑慮?
當列車在地下隧道中前進時,由於列車的流體不可穿透性,會導致列車前方的空氣受到列車撞擊而有往前的動量,而這能量會隨時間不斷往下游傳遞如波的傳遞,該現象稱為活塞效應(Piston effect)。當列車靠近車站時,會推引大量空氣快速灌入月台層,導致月台門會面對較大壓力而有遭受破壞產生人員受傷的疑慮。由此,車站往往會設計釋壓井,作為活塞效應的緩解工具。 本研究採用商用CFD模擬軟體PHOENICS,有限體積法進行模擬單列列車以車速40公里/時、65公里/時、以及80公里/時,以及雙向列車以車速65公里/時通過車站時,發現月台門壓力隨車速升高;而釋壓井的存在確實大大舒緩了列車進站瞬間造成的巨大的壓力;於模擬時有無開啟重力項對於結果也有很大影響,單純加入重力項會使得釋壓井內空氣因為自身重量流入站內造成垂直的壓力梯度,進而使月台門壓力升高、釋壓井淨流入流量升高。 | zh_TW |
dc.description.abstract | Nowadays, transportation system is becoming well-developed in the world, and taking public transportation can be said to be everyone''s daily life. Among them, rail transportation is the most important, because people can accurately take full control of the time of departure and arrival when they use this transportation. Under the urban expansion, there’s no more space for the construction of this kind of transportation, so the development direction of rail transportation has tended to go underground. However, the biggest challenge it faces is: when trains with some speed moving in a narrow space, will the abrupt changes in the wind field caused by the high-speed passing of trains cause safety concerns for the human body or track and any station facilities?
When a train moves in an underground tunnel, due to the fluid impenetrability of the train itself, the air in front of the train will be impacted by the train and gain forward momentum, and this energy will continue to be transferred downstream like waves over time. The phenomenon is called the “Piston effect”. When a train approaches a station, a large amount of air will be pushed into the platform floor all of a sudden, causing the platform door to be exposed to greater pressure and possibly damaged accordingly, raising the risk of personal injury. Therefore, stations often design pressure relief well as a tool to mitigate the piston effect. This study uses the commercial CFD simulation software “PHOENICS” to simulate a single train passing through the station at a speed of 40 km/h, 65 km/h, and 80 km/h, and a two-way trains passing in two opposite directions through the station at a speed of 65 km/h. It is found that the platform door pressure changes with time. The pressure platform doors face rises when the speed of the train increases; and the existence of the pressure relief well does greatly relieve the huge pressure caused by the moment the train enters the station; Whether or not the gravity term is turned on during simulation also has a great impact on the results. Simply adding the gravity term will cause the air in the pressure relief well to flow into the station due to its own weight, causing a vertical pressure gradient, which will increase the platform door pressure and cause an increasing net inflow of air into the pressure relief. | en |
dc.description.provenance | Submitted by admin ntu (admin@lib.ntu.edu.tw) on 2024-02-20T16:13:38Z No. of bitstreams: 0 | en |
dc.description.provenance | Made available in DSpace on 2024-02-20T16:13:38Z (GMT). No. of bitstreams: 0 | en |
dc.description.tableofcontents | 致謝 I
摘要 II ABSTRACT III 目次 V 圖次 VII 表次 XII 符號說明 XIII 第一章 序論 1 1.1 前言 1 1.2 文獻回顧 2 1.3 研究動機與目的 6 第二章 基礎理論 9 2.1 理論模式 9 2.1.1 Navier-Stokes equations 9 2.1.2 紊流模式 9 第三章 研究方法 14 3.1 數值方法 14 3.1.1 紊流模型之離散化 14 3.1.2 網格布設之比較 16 3.1.3 模擬演算法之比較 17 3.1.4 SIMPLE演算法[22] 20 3.2 模擬流程 24 第四章 結果與討論 27 4.1 模擬範圍 27 4.2 模擬之初始條件與邊界條件 27 4.3 列車行進速度與月台門所受壓力之關係(不考慮重力項) 28 4.3.1 模擬之設定 28 4.3.2 模擬之結果 29 4.4 列車行進速度與釋壓井空氣流速之關係(不考慮重力項) 33 4.4.1 模擬之設定 33 4.4.2 模擬之結果 34 4.5 列車行進速度與月台門所受壓力之關係(考慮重力項) 48 4.5.1 模擬之設定 48 4.5.2 模擬之結果 48 4.6 列車行進速度與釋壓井空氣流速之關係(考慮重力項) 52 4.6.1 模擬之設定 52 4.6.2 模擬之結果 53 4.7 總結與討論 63 第五章 結論與建議 87 5.1 結論 87 5.2 建議 88 5.2.1 模擬建議事項 88 5.2.2 地下車站建議事項 89 參考文獻 90 附錄 93 | - |
dc.language.iso | zh_TW | - |
dc.title | 地下軌道運輸系統活塞效應之模擬分析 | zh_TW |
dc.title | Simulation Analysis of Piston Effect in Underground Rail Transportation System | en |
dc.type | Thesis | - |
dc.date.schoolyear | 112-1 | - |
dc.description.degree | 碩士 | - |
dc.contributor.oralexamcommittee | 江沅晉;梁俊德;林子淵 | zh_TW |
dc.contributor.oralexamcommittee | Yuan-Ching Chiang;Jyun-De Liang;Tzu-Yuan Lin | en |
dc.subject.keyword | 地下軌道,活塞效應,釋壓井,CFD模擬,有限體積法, | zh_TW |
dc.subject.keyword | Underground system,Piston effect,Pressure relief,CFD,PHOENICS, | en |
dc.relation.page | 96 | - |
dc.identifier.doi | 10.6342/NTU202400249 | - |
dc.rights.note | 同意授權(限校園內公開) | - |
dc.date.accepted | 2024-02-01 | - |
dc.contributor.author-college | 工學院 | - |
dc.contributor.author-dept | 機械工程學系 | - |
顯示於系所單位: | 機械工程學系 |
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