Numerical simulation of bus aerodynamics on several classes of bridge decks
This paper is focused on improving traffic safety on bridges under crosswind conditions, as adverse wind conditions can increase the risk of traffic accidents. Two ways to improve traffic safety are investigated: improving vehicle stability by means of wind fences installed on the bridge deck and by...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2017-01-01
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| Series: | Engineering Applications of Computational Fluid Mechanics |
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| Online Access: | http://dx.doi.org/10.1080/19942060.2016.1201544 |
| _version_ | 1819207092354940928 |
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| author | A. Alonso-Estébanez J. J. Del Coz Díaz F. P. Álvarez Rabanal P. Pascual-Muñoz |
| author_facet | A. Alonso-Estébanez J. J. Del Coz Díaz F. P. Álvarez Rabanal P. Pascual-Muñoz |
| author_sort | A. Alonso-Estébanez |
| collection | DOAJ |
| description | This paper is focused on improving traffic safety on bridges under crosswind conditions, as adverse wind conditions can increase the risk of traffic accidents. Two ways to improve traffic safety are investigated: improving vehicle stability by means of wind fences installed on the bridge deck and by modifying the design parameters of the infrastructure. Specifically, this study examines the influence of different parameters related to the bridge deck configuration on the aerodynamic coefficients acting on a bus model under crosswind conditions. The aerodynamic coefficients related to side force, lift force and rollover moment are obtained for three classes of bridge deck (box, girder and board) by numerical simulation. FLUENT was used to solve the Reynolds-averaged Navier–Stokes (RANS) equations along with the shear stress transport (SST) k–ω turbulence model. Two crash barriers located on the box bridge deck were replaced with an articulating wind fence model and the effect of the angle between the wind fence and the horizontal plane on the bus aerodynamic was investigated. The risk of rollover accidents was found to be slightly influenced by the bridge deck type for a yaw angle range between 75° and 120°. In order to study the effect of the yaw angle on the aerodynamic coefficients acting on bus, both the bus model and the bridge model were simultaneously rotated. The minimum value of the rollover coefficient was obtained for an angle of 60° between the wind fence slope and the horizontal plane. The only geometry parameter of the box bridge deck which significantly affects bus aerodynamics is the box height. The present research highlights the usefulness of computational fluid dynamics (CFD) for improving traffic safety, studying the performance of the articulating wind fence, and determining which geometry parameters of the box deck have a significant influence on the bus stability. |
| first_indexed | 2024-12-23T05:18:00Z |
| format | Article |
| id | doaj.art-d287b3830f4f4b5caff05f5794bdf1a5 |
| institution | Directory Open Access Journal |
| issn | 1994-2060 1997-003X |
| language | English |
| last_indexed | 2024-12-23T05:18:00Z |
| publishDate | 2017-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Engineering Applications of Computational Fluid Mechanics |
| spelling | doaj.art-d287b3830f4f4b5caff05f5794bdf1a52022-12-21T17:58:47ZengTaylor & Francis GroupEngineering Applications of Computational Fluid Mechanics1994-20601997-003X2017-01-0111143544910.1080/19942060.2016.12015441201544Numerical simulation of bus aerodynamics on several classes of bridge decksA. Alonso-Estébanez0J. J. Del Coz Díaz1F. P. Álvarez Rabanal2P. Pascual-Muñoz3University of CantabriaUniversity of OviedoUniversity of OviedoUniversity of CantabriaThis paper is focused on improving traffic safety on bridges under crosswind conditions, as adverse wind conditions can increase the risk of traffic accidents. Two ways to improve traffic safety are investigated: improving vehicle stability by means of wind fences installed on the bridge deck and by modifying the design parameters of the infrastructure. Specifically, this study examines the influence of different parameters related to the bridge deck configuration on the aerodynamic coefficients acting on a bus model under crosswind conditions. The aerodynamic coefficients related to side force, lift force and rollover moment are obtained for three classes of bridge deck (box, girder and board) by numerical simulation. FLUENT was used to solve the Reynolds-averaged Navier–Stokes (RANS) equations along with the shear stress transport (SST) k–ω turbulence model. Two crash barriers located on the box bridge deck were replaced with an articulating wind fence model and the effect of the angle between the wind fence and the horizontal plane on the bus aerodynamic was investigated. The risk of rollover accidents was found to be slightly influenced by the bridge deck type for a yaw angle range between 75° and 120°. In order to study the effect of the yaw angle on the aerodynamic coefficients acting on bus, both the bus model and the bridge model were simultaneously rotated. The minimum value of the rollover coefficient was obtained for an angle of 60° between the wind fence slope and the horizontal plane. The only geometry parameter of the box bridge deck which significantly affects bus aerodynamics is the box height. The present research highlights the usefulness of computational fluid dynamics (CFD) for improving traffic safety, studying the performance of the articulating wind fence, and determining which geometry parameters of the box deck have a significant influence on the bus stability.http://dx.doi.org/10.1080/19942060.2016.1201544Crosswindbridge decksheavy vehicle aerodynamicsfinite-volume method (FVM)computational fluid dynamics (CFD) |
| spellingShingle | A. Alonso-Estébanez J. J. Del Coz Díaz F. P. Álvarez Rabanal P. Pascual-Muñoz Numerical simulation of bus aerodynamics on several classes of bridge decks Engineering Applications of Computational Fluid Mechanics Crosswind bridge decks heavy vehicle aerodynamics finite-volume method (FVM) computational fluid dynamics (CFD) |
| title | Numerical simulation of bus aerodynamics on several classes of bridge decks |
| title_full | Numerical simulation of bus aerodynamics on several classes of bridge decks |
| title_fullStr | Numerical simulation of bus aerodynamics on several classes of bridge decks |
| title_full_unstemmed | Numerical simulation of bus aerodynamics on several classes of bridge decks |
| title_short | Numerical simulation of bus aerodynamics on several classes of bridge decks |
| title_sort | numerical simulation of bus aerodynamics on several classes of bridge decks |
| topic | Crosswind bridge decks heavy vehicle aerodynamics finite-volume method (FVM) computational fluid dynamics (CFD) |
| url | http://dx.doi.org/10.1080/19942060.2016.1201544 |
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