摘要
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、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。
In this paper,a two-dimensional transmission line icing model was established to predict the ice shape.The air flow field and convection heat transfer were calculated by the Fluent software.A discrete phase model 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,temperature,air moisture content,and wind direction angle on the transmission line icing characteristics were considered in the study.The UDF was used to realize the forced vibration of the transmission line.The influence of the vibration of the transmission line on the icing characteristics was emphatically analyzed,and the influence laws of the vibration amplitudes and frequencies on the local water droplet collection coefficient and the icing shape were obtained.
作者
高鹏
臧五岳
李丹煜
徐枫
段忠东
欧进萍
GAO Peng;ZANG Wuyue;LI Danyu;XU Feng;DUAN Zhongdong;OU Jinping(School of Civil and Environmental Engineering,Harbin Institute of Technology(Shenzhen),Shenzhen 518055,China;Power Transmission and Transformation Engineering Department,China Electric Power Research Institute,Beijing 100055,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2023年第20期77-85,共9页
Journal of Vibration and Shock
基金
广东省自然科学基金面上项目(2019A1515012205)
深圳市科技计划基础研究面上项目(JCYJ20190806144009332)
深圳市高等院校稳定支持计划项目(GXWD20201230155427003-20200823134428001)。
关键词
输电导线
结冰模型
水滴收集系数
热力学模型
transmission lines
icing model
water droplet collection coefficient
thermodynamic model
作者简介
第一作者:高鹏,男,硕士生,1997年生;通信作者:徐枫,男,博士,副教授,博士生导师,1980年生。
