双分裂导线表面水滴撞击特性的数值模拟

Numerical Simulation of Water Droplets Impingement Characteristicson Surface of Double Bundle Conductor

为研究双分裂导线的覆冰问题,基于覆冰机理采用拉格朗日法对双分裂导线表面的水滴撞击特性进行数值模拟,分析了风速、水滴直径、子导线截面直径、分裂间距等参数对双分裂导线表面水滴撞击特性的影响。计算结果表明,风速对小直径水滴的撞击系数影响显著,当水滴直径小于45μm时撞击系数增长较快,同等条件下选择较大直径型号的双分裂导线防冰性能优越;分裂间距对双分裂导线表面水滴撞击系数的影响不显著。

In order to study the icing problem of double bundle conductor,a numerical simulation of water droplets impingement characteristics is performed with the method of Lagrange,based on the principle of icing.The influence of wind speed,diameters of droplets,diameters of conductors and intrabundle spacing on the impingement characteristics in double bundle conductor surface is investigated systematically.It is found that the impingement coefficient of small diameter of water droplets can be influenced obviously by wind.When the diameter of water droplets is less than 45um,the impingement coefficient is growing rapidly.The anti-icing performance is growing better with the increasing of conduct diameter.The influence of intrabundle spacing to the impingement coefficient is not obvious.