- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
- Chinese S&T Journal Citation Reports
- Chinese Science Citation Database
| Citation: | LING Liang, HU Yanlin, YANG Zeyu, WANG Kaiyun, ZHAI Wanming. Effect of Plateau Railway Special Meteorological Environment on Tunnel Aerodynamic Drag of Electric Multiple Unit Train[J]. Journal of Southwest Jiaotong University, 2022, 57(1): 158-165. doi: 10.3969/j.issn.0258-2724.20190998
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The effects of atmospheric pressure and temperature conditions along a plateau railway on the tunnel aerodynamic drag of electric multiple unit (EMU) trains were investigated by collecting and analyzing meteorological data of the Ya’an to Linzhi section of a plateau railway. A numerical model for the prediction of the tunnel aerodynamic drag of EMU trains was established, and the effects of the variations in air pressure and temperature along a plateau railway were analyzed in numerical simulations. The results show that the atmospheric pressure and temperature affect the tunnel aerodynamic drag of EMU trains. A lower atmospheric pressure leads to lower tunnel aerodynamic drag whereas a higher air temperature leads to higher tunnel aerodynamic drag of the EMU train. Compared with the normal meteorological environment of the plains, the variation in the atmospheric pressure along a plateau railway causes an approximately 30% change to the tunnel aerodynamic drag of EMU trains, whereas the effect of the variation in air temperature is around 10%.
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