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- Title
Effects of detailed shape of air-shaft entrance hood on tunnel pressure waves.
- Authors
Kim, Dong Hyeon; Seo, Yong Cheol; Kim, Tae Ho; Kim, Heuy Dong
- Abstract
Air-shaft entrance hood model with fence is investigated to reduce micro pressure wave in a single-track tunnel of the high-speed railway. Aerodynamically designed airshaft hoods are classified by 5 cases according to fence types and the micro pressure waves are measured by the low frequency sound level meters installed at a tunnel exit of a moving model test rig with a scale ratio of 1/64. Based on the case of no hood model, 5 different hood models were tested and analyzed for the speed of a model train from 180 km/h to 250 km/h.
- Subjects
TUNNELS; PRESSURE; AUDIO frequency; COMPRESSIBLE flow
- Publication
Journal of Mechanical Science & Technology, 2021, Vol 35, Issue 2, p615
- ISSN
1738-494X
- Publication type
Article
- DOI
10.1007/s12206-021-0121-3