大气冰在铁路架空电力线导线上的积聚——一个数值案例研究

IF 0.4 Q4 ENGINEERING, MECHANICAL
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引用次数: 0

摘要

铁路架空接触导线/导线上的冰积会导致各种关键的操作和安全问题,如过载、电弧形成、质量不平衡和导线飞奔。本多相数值研究的重点是了解和分析不同运行条件下铁路架空电力线导线上的冰积物理特性。在这方面,两种不同几何形状的导线直径为12mm, 1)沟槽状接触导线(类似于实际的铁路导线);2)采用标准圆形接触线。在风速、液态水含量(LWC)、云滴大小分布、中位体积直径(MVD)和大气温度等不同运行参数下,对两种几何构型进行了基于计算流体力学(CFD)的数值模拟。分析表明,两种几何构型的运行天气参数的变化对冰的增加有很大的影响,无论是在冰的厚度和质量方面。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Atmospheric Ice Accretion on Railway Overhead Powerline Conductors- A Numerical Case Study
Ice accretion on railway overhead contact wires/conductors can cause various critical operational and safety issues such as overloading, arc formation, mass imbalance, and wire galloping. The focus of this multiphase numerical study is to understand and analyze the ice accretion physics on railway overhead powerline conductors at various operating conditions. In this regard, two different geometric shape conductors of 12 mm diameter, 1) a grooved shape contact wire (like an actual railway conductor); 2) a standard circular shape contact wire are used. Computational Fluid Dynamics (CFD) based numerical simulations are carried out for both geometric configurations at different operating parameters such as wind speed, Liquid Water Content (LWC), cloud droplet size distribution, Median Volume Diameter (MVD), and atmospheric temperature. Analysis shows that variation in the operating weather parameters for both geometric configurations considerably affects the ice accretion, both in terms of accreted ice thickness and mass.
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来源期刊
International Journal of Multiphysics
International Journal of Multiphysics ENGINEERING, MECHANICAL-
CiteScore
1.20
自引率
57.10%
发文量
21
审稿时长
15 weeks
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