Correlation analysis between snow-removal characteristics of EMU and topological configuration of obstacle deflector panel

ZHANG Huahai; LU Jun; XIONG Wei; YOU Tianyu; SHEN Lumin

doi:10.13890/j.issn.1000-128X.2024.04.009

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Correlation analysis between snow-removal characteristics of EMU and topological configuration of obstacle deflector panel

Railway Rolling Stock | 更新时间：2024-09-12

- Correlation analysis between snow-removal characteristics of EMU and topological configuration of obstacle deflector panel
- Electric Drive for Locomotives Issue 4, Pages: 72-79(2024)
- 作者机构：
  
  1.重载快捷大功率电力机车全国重点实验室，湖南株洲 412001
  2.中南大学轨道交通安全教育部重点实验室，湖南长沙 410083
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128X.2024.04.009
  CLC： U292.91⁺4;U216.41⁺2
- Published：10 July 2024，
  
  Received：01 December 2023，
  
  Revised：27 May 2024，
- 稿件说明：
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张华海, 陆军, 熊伟, 等. 动车组排雪特性与排障面板拓扑构型关联分析[J]. 机车电传动, 2024(4): 72-79.

ZHANG Huahai, LU Jun, XIONG Wei, et al. Correlation analysis between snow-removal characteristics of EMU and topological configuration of obstacle deflector panel[J]. Electric drive for locomotives,2024(4): 72-79.
张华海, 陆军, 熊伟, 等. 动车组排雪特性与排障面板拓扑构型关联分析[J]. 机车电传动, 2024(4): 72-79. DOI：10.13890/j.issn.1000-128X.2024.04.009.

ZHANG Huahai, LU Jun, XIONG Wei, et al. Correlation analysis between snow-removal characteristics of EMU and topological configuration of obstacle deflector panel[J]. Electric drive for locomotives,2024(4): 72-79. DOI：10.13890/j.issn.1000-128X.2024.04.009.

摘要

为明确在排雪横截面不变时某型出口欧洲动车组的排雪特性与排障面板几何构型之间的关联关系，指导积雪加载条件下排障面板拓扑构型设计，运用光滑粒子流体力学方法构建动车组冲击轨道松软积雪数值模型，开展不同前角和张角排障面板在冲击积雪过程中飞雪运动形态、排雪阻力和能耗功率分析。研究结果表明，被排除积雪在空中的飞扬形态与排障面板前角与张角密切相关，调整排障面板前角与张角可调整飞雪

方向的飞扬高度和

方向的速度，从而避免空中飞扬的积雪阻挡司机视线，保障动车组安全运行；排障面板前角对动车组

方向排雪阻力影响较小，但可改变

方向排雪阻力的大小和方向；排障面板张角增大会导致

方向排雪阻力增大，

方向排雪阻力先增大后减小；动车组排雪能耗、功率与排障面板前角关联性较小，与排障面板张角呈正相关关系，减小排障面板张角可有效减小排雪能耗和功率，达到减载降负和节能效果。

Abstract

This paper aims to clarify the relationship between the snow-removal characteristics of an EMU mode intended for export to Europe and the geometrical configuration of its obstacle deflector panels

while maintaining a consistent snow-removal cross-section

and guide the topological configuration design for these panels to ensure their effectiveness under snow loading. A numerical model describing the impact of the EMUs on accumulated snow on tracks was constructed

using the smoothed particle hydrodynamics method. This model was then utilized to analyze snow movement

snow-removal resistance

energy consumption power under various rake and flare angles of the obstacle deflector panels. The results reveal a close relationship between snow movement and the rake and flare angles. Adjusting these angles can affect the height of snow movement in the

direction and the speed in the

direction

thereby preventing flying snow from blocking the driver's sight and ensuring the safe operation of the EMUs. The rake angle is found to influence both the magnitude and direction of

-directional snow-removal resistance

despite having little effect on

-directional snow-removal resistance. As the flare angle increases

-directional snow-removal resistance increases

whereas

-directional snow-removal resistance first increases and then decreases. Moreover

the snow-removal energy consumption and power of the EMUs exhibit low correlations with rake angles of the obstacle deflector panels and positive correlations with flare angles. Therefore

reducing flare angles can effectively decrease snow-removal energy consumption and power

leading to load reduction and energy conservation.

关键词

动车组排障面板积雪排雪特性

Keywords

EMUobstacle deflector panelsnowsnow-removal characteristic

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