Aerodynamics of High-Speed Trains with Respect to Ground Simulation
Wind tunnel testing is commonly used to assess and optimize the aerodynamic characteristics of high-speed trains. The train model is usually mounted above a static ground plane, but a moving ground is necessary for the correct representation of the relative motion between train and ground. This stud...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Fluids |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2311-5521/7/7/228 |
| _version_ | 1797433620238958592 |
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| author | Dennis Weidner Daniel Stoll Timo Kuthada Andreas Wagner |
| author_facet | Dennis Weidner Daniel Stoll Timo Kuthada Andreas Wagner |
| author_sort | Dennis Weidner |
| collection | DOAJ |
| description | Wind tunnel testing is commonly used to assess and optimize the aerodynamic characteristics of high-speed trains. The train model is usually mounted above a static ground plane, but a moving ground is necessary for the correct representation of the relative motion between train and ground. This study focuses on the effect of the applied ground simulation on the aerodynamics of a high-speed train. Wind tunnel tests using a stationary and a moving ground were carried out using a 1:20 scale model of a high-speed train’s first car. Numerical simulations for two moving ground configurations are created, and the simulation setup is validated using surface pressure measurements from the wind tunnel tests. It is shown that the ground simulation has a significant effect on the drag in the considered yaw angle range. Additionally, the change in drag due to bogie fairings is evaluated and an impact of the applied ground simulation on the drag reduction is observed. The drag reduction of front and rear bogie fairings is valued similarly using a static ground, however on a moving ground the drag reduction of front bogie fairings is significantly increased. Good agreement between simulations and experiments is achieved. |
| first_indexed | 2024-03-09T10:19:34Z |
| format | Article |
| id | doaj.art-b998958888c94522885690f89d4eeea8 |
| institution | Directory Open Access Journal |
| issn | 2311-5521 |
| language | English |
| last_indexed | 2024-03-09T10:19:34Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fluids |
| spelling | doaj.art-b998958888c94522885690f89d4eeea82023-12-01T22:08:31ZengMDPI AGFluids2311-55212022-07-017722810.3390/fluids7070228Aerodynamics of High-Speed Trains with Respect to Ground SimulationDennis Weidner0Daniel Stoll1Timo Kuthada2Andreas Wagner3Institute of Automotive Engineering (IFS), University of Stuttgart, 70569 Stuttgart, GermanyResearch Institute for Automotive Engineering and Vehicle Powertrain Systems Stuttgart (FKFS), 70569 Stuttgart, GermanyResearch Institute for Automotive Engineering and Vehicle Powertrain Systems Stuttgart (FKFS), 70569 Stuttgart, GermanyInstitute of Automotive Engineering (IFS), University of Stuttgart, 70569 Stuttgart, GermanyWind tunnel testing is commonly used to assess and optimize the aerodynamic characteristics of high-speed trains. The train model is usually mounted above a static ground plane, but a moving ground is necessary for the correct representation of the relative motion between train and ground. This study focuses on the effect of the applied ground simulation on the aerodynamics of a high-speed train. Wind tunnel tests using a stationary and a moving ground were carried out using a 1:20 scale model of a high-speed train’s first car. Numerical simulations for two moving ground configurations are created, and the simulation setup is validated using surface pressure measurements from the wind tunnel tests. It is shown that the ground simulation has a significant effect on the drag in the considered yaw angle range. Additionally, the change in drag due to bogie fairings is evaluated and an impact of the applied ground simulation on the drag reduction is observed. The drag reduction of front and rear bogie fairings is valued similarly using a static ground, however on a moving ground the drag reduction of front bogie fairings is significantly increased. Good agreement between simulations and experiments is achieved.https://www.mdpi.com/2311-5521/7/7/228high-speed trainwind tunnelground simulationbogie fairings |
| spellingShingle | Dennis Weidner Daniel Stoll Timo Kuthada Andreas Wagner Aerodynamics of High-Speed Trains with Respect to Ground Simulation Fluids high-speed train wind tunnel ground simulation bogie fairings |
| title | Aerodynamics of High-Speed Trains with Respect to Ground Simulation |
| title_full | Aerodynamics of High-Speed Trains with Respect to Ground Simulation |
| title_fullStr | Aerodynamics of High-Speed Trains with Respect to Ground Simulation |
| title_full_unstemmed | Aerodynamics of High-Speed Trains with Respect to Ground Simulation |
| title_short | Aerodynamics of High-Speed Trains with Respect to Ground Simulation |
| title_sort | aerodynamics of high speed trains with respect to ground simulation |
| topic | high-speed train wind tunnel ground simulation bogie fairings |
| url | https://www.mdpi.com/2311-5521/7/7/228 |
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