Journal article
The influence of the leading-edge angle of subgrade on the aerodynamic loads of a high-speed train in a wind tunnel
Transportation safety and environment Online, v 6(2), 020
01 Apr 2024
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The purpose of this study is to establish the correlation between the boundary layer over the subgrade and the aerodynamic loads acting on the train model in conventional wind tunnel tests. Firstly, flow characteristics around the subgrade with different leading-edge angles (15 degrees, 30 degrees and 45 degrees) are investigated through the particle image velocimetry (PIV) experimental test method. Then, wind tunnel tests of the aerodynamic performance of a high-speed train are carried out. The results are compared with previous experimental data obtained by moving model tests. Results show that, due to the presence of a boundary layer, the pressure acting on the lower part of the train head decreases, while other locations are not significantly affected. This is the reason for the reduction of the aerodynamic drag and lift on the train. In addition, the reduction effects become more obvious when the thickness of the boundary layer increases. The experimental results obtained could serve as a calibration of aerodynamic forces for wind tunnel tests on high-speed trains.
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Details
- Title
- The influence of the leading-edge angle of subgrade on the aerodynamic loads of a high-speed train in a wind tunnel
- Creators
- Zeyun Yang - Central South UniversityGang Xu - Qingdao Center of Resource Chemistry and New MaterialsFan Wu - Central South UniversityLei Zhang (Corresponding Author) - Central South UniversityJian Du - Qingdao Center of Resource Chemistry and New MaterialsDmitri Vainchtein - Drexel University
- Publication Details
- Transportation safety and environment Online, v 6(2), 020
- Publisher
- Oxford University Press
- Number of pages
- 10
- Grant note
- 2021JJ40772 / Project of State Key Laboratory of High Performance Complex Manufacturing ZZYJKT2021-09 / National Natural Science Foundation of China; National Natural Science Foundation of China (NSFC) Natural Science Foundation of Hunan Province 52072413; 52002408 / National Natural Science Foundation of China; National Natural Science Foundation of China (NSFC)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- C. and J. Nyheim Plasma Institute
- Web of Science ID
- WOS:001199452200001
- Scopus ID
- 2-s2.0-85190115583
- Other Identifier
- 991022202100804721
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- Collaboration types
- Industry collaboration
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Transportation Science & Technology