Effect of crosswinds on aerodynamic characteristics around a generic train model
In this article, simulations of crosswinds over a rectangular prism with two types of train nose shapes (i.e. blunt and ellipse) that are running on flat ground case are discussed. The incident flow angle is varied from 0° to 90°. The flow around the train is solved using the incompressible form of...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2019
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/5000/1/AJ%202018%20%28809%29%20Effect%20of%20crosswinds%20on%20aerodynamic%20characteristics%20around%20a%20generic%20train%20model.pdf |
| _version_ | 1825709946138787840 |
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| author | Ishak, I. A. Mat Ali, Mohamed Sukri Mohd Yakub, Mohamad Fitri Shaikh Salim, Sheikh Ahmad Zaki |
| author_facet | Ishak, I. A. Mat Ali, Mohamed Sukri Mohd Yakub, Mohamad Fitri Shaikh Salim, Sheikh Ahmad Zaki |
| author_sort | Ishak, I. A. |
| collection | UTHM |
| description | In this article, simulations of crosswinds over a rectangular prism with two types of train nose shapes (i.e. blunt and ellipse) that are running on flat ground case are discussed. The incident flow angle is varied from 0° to 90°. The flow around the train is solved using the incompressible form of the unsteady Reynolds Navier-Stokes (URANS) equations combined with the Shear-Stress-Transport k � ω turbulence model. The Reynolds number used, based on the height of the train is 3.7 × 105 . Two distinctive flow regimes appear which represent a slender body behaviour at a smaller range of incident flow angles (below 45°) and bluff body behaviour at a much higher range of incident flow angles (above 45°). The safety guidelines for train’s operation suggested that both the train’s nose geometry and the wind speed condition are the two major factors that limit the maximum allowable speed for a particular train to be travelling. |
| first_indexed | 2024-03-05T21:50:07Z |
| format | Article |
| id | uthm.eprints-5000 |
| institution | Universiti Tun Hussein Onn Malaysia |
| language | English |
| last_indexed | 2024-03-05T21:50:07Z |
| publishDate | 2019 |
| publisher | Taylor & Francis Group |
| record_format | dspace |
| spelling | uthm.eprints-50002022-01-03T05:01:43Z http://eprints.uthm.edu.my/5000/ Effect of crosswinds on aerodynamic characteristics around a generic train model Ishak, I. A. Mat Ali, Mohamed Sukri Mohd Yakub, Mohamad Fitri Shaikh Salim, Sheikh Ahmad Zaki TJ Mechanical engineering and machinery TJ266-267.5 Turbines. Turbomachines (General) In this article, simulations of crosswinds over a rectangular prism with two types of train nose shapes (i.e. blunt and ellipse) that are running on flat ground case are discussed. The incident flow angle is varied from 0° to 90°. The flow around the train is solved using the incompressible form of the unsteady Reynolds Navier-Stokes (URANS) equations combined with the Shear-Stress-Transport k � ω turbulence model. The Reynolds number used, based on the height of the train is 3.7 × 105 . Two distinctive flow regimes appear which represent a slender body behaviour at a smaller range of incident flow angles (below 45°) and bluff body behaviour at a much higher range of incident flow angles (above 45°). The safety guidelines for train’s operation suggested that both the train’s nose geometry and the wind speed condition are the two major factors that limit the maximum allowable speed for a particular train to be travelling. Taylor & Francis Group 2019 Article PeerReviewed text en http://eprints.uthm.edu.my/5000/1/AJ%202018%20%28809%29%20Effect%20of%20crosswinds%20on%20aerodynamic%20characteristics%20around%20a%20generic%20train%20model.pdf Ishak, I. A. and Mat Ali, Mohamed Sukri and Mohd Yakub, Mohamad Fitri and Shaikh Salim, Sheikh Ahmad Zaki (2019) Effect of crosswinds on aerodynamic characteristics around a generic train model. INTERNATIONAL JOURNAL OF RAIL TRANSPORTATION, 7 (1). pp. 23-54. ISSN 2324-8386 |
| spellingShingle | TJ Mechanical engineering and machinery TJ266-267.5 Turbines. Turbomachines (General) Ishak, I. A. Mat Ali, Mohamed Sukri Mohd Yakub, Mohamad Fitri Shaikh Salim, Sheikh Ahmad Zaki Effect of crosswinds on aerodynamic characteristics around a generic train model |
| title | Effect of crosswinds on aerodynamic characteristics around a generic train model |
| title_full | Effect of crosswinds on aerodynamic characteristics around a generic train model |
| title_fullStr | Effect of crosswinds on aerodynamic characteristics around a generic train model |
| title_full_unstemmed | Effect of crosswinds on aerodynamic characteristics around a generic train model |
| title_short | Effect of crosswinds on aerodynamic characteristics around a generic train model |
| title_sort | effect of crosswinds on aerodynamic characteristics around a generic train model |
| topic | TJ Mechanical engineering and machinery TJ266-267.5 Turbines. Turbomachines (General) |
| url | http://eprints.uthm.edu.my/5000/1/AJ%202018%20%28809%29%20Effect%20of%20crosswinds%20on%20aerodynamic%20characteristics%20around%20a%20generic%20train%20model.pdf |
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