Impact of Downward-inclined Anti-snow Deflectors on Snow Accumulation on Bogies of Alpine High-speed Trains

被引：0

作者：

Wang J. ^{[1
,2
,3
]}

Liu H. ^{[1
,2
]}

Liu C. ^{[1
,2
]}

Zhang J. ^{[1
,2
]}

Wang T. ^{[1
,2
]}

Gao G. ^{[1
,2
]}

机构：

[1] State Key Laboratory of Heavy-duty and Express High-powen Electric Locomotive, Central South University, Changsha

[2] National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle, Changsha

[3] Key Laboratory of Icing and Anti/De-icing, China Aerodynamics Research and Developemnt Center, Mianyang

来源：

Tiedao Xuebao/Journal of the China Railway Society | 2023年 / 45卷 / 09期

关键词：

anti-snow design; bogie region; high-speed train; numerical simulation; wind-snow two-phase flow;

D O I：

10.3969/j.issn.1001-8360.2023.09.005

中图分类号：

学科分类号：

摘要：

To solve the serious issue of snow accumulation on the bogies of the high-speed trains operating in cold areas, the effects of the downward-inclined anti-snow deflectors on the wind-snow flow characteristics in the bogie regions of a three-car high-speed train were investigated using unsteady Reynolds-Averaged Navier-Stokes simulations (URANS) with Realizable k-s coupled with the Discrete Phase Model (DPM). The results show that the downward-inclined anti-snow deflectors, with effective reduction of the stream-wise kinetic energy of the high-speed airflow beneath the highspeed train, suppress the fluctuation amplitude of the vertical velocity component of the airflow under the bogies and lower the separating position of the shear layers upstream the bogies. Compared to the downward-inclined anti-snow deflectors with the diversion angle of 5. 14°, the downward-inclined anti-snow deflectors with the diversion angle of 10°, significantly improving the flow characteristics of the airflow, weakens the impingement on the bogie surface caused by the massive snow particles and eliminates the upward climbing motion of snow particles around the middle bogie region and the rear equipment cabin covers, which thereby reduces the snow accumulation mass on the bogies No. 2, 3, 4, 5 and 6 by 52. 6%, 45. 3%, 41. 8%, 37. 6% and 31. 8%, respectively. Compared to the original high-speed train, the downward-inclined anti-snow deflectors with the diversion angles of 5. 14° and 10° decrease the total snow mass on all bogies by 20. 6% and 41. 5%, respectively. © 2023 Science Press. All rights reserved.

引用

页码：46 / 55

页数：9

共 26 条

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