Research on aerodynamic characteristics of wipers of high-speed train running on open tracks
With the increase in train running speeds, the aerodynamic loading on the wipers of high-speed trains significantly escalates. Wiper failures under this aerodynamic loading pose serious risks on the driving safety. This paper focuses on investigating the aerodynamic performance of wipers on trains r...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Electric Drive for Locomotives
2024-07-01
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| Series: | 机车电传动 |
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| Online Access: | http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128X.2024.04.103 |
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| _version_ | 1850142677174059008 |
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| author | JIN Yongrong CHEN Xiaoli |
| author_facet | JIN Yongrong CHEN Xiaoli |
| author_sort | JIN Yongrong |
| collection | DOAJ |
| description | With the increase in train running speeds, the aerodynamic loading on the wipers of high-speed trains significantly escalates. Wiper failures under this aerodynamic loading pose serious risks on the driving safety. This paper focuses on investigating the aerodynamic performance of wipers on trains running at high speeds. A turbulence model based on the three-dimensional, steady and incompressible Navier-Stokes equations and k-epsilon (<italic>k</italic>-<italic>ε</italic>) two equations was utilized, to examine the aerodynamic characteristics of the wipers on a three-car high-speed train running on open tracks at speed levels of 300 km/h, 350 km/h and 400 km/h. The results indicate that with the increase in train speeds, aerodynamic forces on the wipers rise significantly, with lateral forces being the primary influence. The aerodynamic forces on the wipers of the head car are greater—up to 3.2 times—than those experienced by the tail car's wipers. The wipers on the head car exhibit an obvious negative pressure distribution at the outer side of the car body. The pressure difference on both sides of the wipers increases by 36% when the train speed reaches 350 km/h, and by 78% at 400 km/h, both compare to the conditions at 300 km/h. Moreover, air flows from the central axis of the train head to both sides of the car body, causing the wipers to move outward towards both sides. In contrast, the tail car's wipers show a trend of moving inward from both sides towards the central axis. These research findings offer valuable insights for the design, installation, and structural safety evaluation of wipers for high-speed trains. |
| format | Article |
| id | doaj-art-be54985611fe460c9be0b8bfcc1e11e9 |
| institution | OA Journals |
| issn | 1000-128X |
| language | zho |
| publishDate | 2024-07-01 |
| publisher | Editorial Department of Electric Drive for Locomotives |
| record_format | Article |
| series | 机车电传动 |
| spelling | doaj-art-be54985611fe460c9be0b8bfcc1e11e92025-08-20T02:28:59ZzhoEditorial Department of Electric Drive for Locomotives机车电传动1000-128X2024-07-0113213869546250Research on aerodynamic characteristics of wipers of high-speed train running on open tracksJIN YongrongCHEN XiaoliWith the increase in train running speeds, the aerodynamic loading on the wipers of high-speed trains significantly escalates. Wiper failures under this aerodynamic loading pose serious risks on the driving safety. This paper focuses on investigating the aerodynamic performance of wipers on trains running at high speeds. A turbulence model based on the three-dimensional, steady and incompressible Navier-Stokes equations and k-epsilon (<italic>k</italic>-<italic>ε</italic>) two equations was utilized, to examine the aerodynamic characteristics of the wipers on a three-car high-speed train running on open tracks at speed levels of 300 km/h, 350 km/h and 400 km/h. The results indicate that with the increase in train speeds, aerodynamic forces on the wipers rise significantly, with lateral forces being the primary influence. The aerodynamic forces on the wipers of the head car are greater—up to 3.2 times—than those experienced by the tail car's wipers. The wipers on the head car exhibit an obvious negative pressure distribution at the outer side of the car body. The pressure difference on both sides of the wipers increases by 36% when the train speed reaches 350 km/h, and by 78% at 400 km/h, both compare to the conditions at 300 km/h. Moreover, air flows from the central axis of the train head to both sides of the car body, causing the wipers to move outward towards both sides. In contrast, the tail car's wipers show a trend of moving inward from both sides towards the central axis. These research findings offer valuable insights for the design, installation, and structural safety evaluation of wipers for high-speed trains.http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128X.2024.04.103high-speed trainwiperaerodynamic forceflow field characteristicsnumerical simulation |
| spellingShingle | JIN Yongrong CHEN Xiaoli Research on aerodynamic characteristics of wipers of high-speed train running on open tracks 机车电传动 high-speed train wiper aerodynamic force flow field characteristics numerical simulation |
| title | Research on aerodynamic characteristics of wipers of high-speed train running on open tracks |
| title_full | Research on aerodynamic characteristics of wipers of high-speed train running on open tracks |
| title_fullStr | Research on aerodynamic characteristics of wipers of high-speed train running on open tracks |
| title_full_unstemmed | Research on aerodynamic characteristics of wipers of high-speed train running on open tracks |
| title_short | Research on aerodynamic characteristics of wipers of high-speed train running on open tracks |
| title_sort | research on aerodynamic characteristics of wipers of high speed train running on open tracks |
| topic | high-speed train wiper aerodynamic force flow field characteristics numerical simulation |
| url | http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128X.2024.04.103 |
| work_keys_str_mv | AT jinyongrong researchonaerodynamiccharacteristicsofwipersofhighspeedtrainrunningonopentracks AT chenxiaoli researchonaerodynamiccharacteristicsofwipersofhighspeedtrainrunningonopentracks |