摘要
本文通过建立二维输电导线结冰模型实现结冰冰形预测。空气流场和对流换热通过Fluent软件计算，采用基于拉格朗日法的离散相模型（DPM）计算输电导线表面水滴收集系数，利用Fluent的用户自定义函数（user-defined function ,UDF）编程求解Messinger热力学模型，计算得到了输电导线表面结冰冰形与结冰厚度。研究中考虑了风速、水滴中值体积直径（MVD）、温度、空气含水量和风向角等因素对输电导线结冰特性的影响。通过UDF实现导线的强迫振动，着重分析了输电导线振动对结冰特性的影响，得到了振动幅度和振动频率对局部水滴收集系数和结冰冰形的影响规律。
Abstract
In this paper, a two-dimensional transmission line icing model is established to predict the ice shape. The air flow field and convection heat transfer were calculated by Fluent software. The discrete phase model (DPM) based on the Lagrangian method was used to calculate the collection coefficient of water droplets on the surface of the transmission line. The Messinger thermodynamic model was solved by user-defined function (UDF) programming of the Fluent, and the ice shape and ice thickness on the surface of the transmission line were calculated. The effects of wind speed, water droplet median volume diameter (MVD), temperature, air moisture content and wind direction angle on the transmission line icing characteristics are considered in the study. The UDF is used to realize the forced vibration of the transmission line. The influence of the vibration of the transmission line on the icing characteristics is emphatically analyzed, and the influence laws of the vibration amplitudes and frequencies on the local water droplet collection coefficient and the icing shape are obtained.
关键词
输电导线 /
结冰模型 /
水滴收集系数 /
热力学模型
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Key words
transmission lines /
icing model /
water droplet collection coefficient /
thermodynamic model
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高鹏1，臧五岳1，李丹煜2，徐枫1，段忠东1，欧进萍1.
输电导线结冰数值模拟与影响因素分析[J]. 振动与冲击, 2023, 42(20): 77-85
GAO Peng1, ZANG Wuyue1, LI Danyu2, XU Feng1, DUAN Zhongdong1, OU Jinping1.
Numerical simulation and analysis of influencing factors of icing on transmission lines[J]. Journal of Vibration and Shock, 2023, 42(20): 77-85
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