A numerical CFD study of the wind flow distribution around the overhead conductors

The CFD numerical model of smooth circular conductor and stranded conductor are established, and the flow field distributions of these two kinds of conductors in different wind speed and diameter are analysed by using DES method. The study shows that: the numerical simulation method is applicable to the vortex-shedding simulation of smooth circular conductor and strand conductor; with the increase of wind speed, the vortex shedding frequency of transmission conductor is accelerated, the space distance of the vortex increases, the vortex street becomes irregular, and the length of the trailing vortex is significantly longer; as the diameter of the conductor increases, the sizes of wake zone and vortex are larger, and the vortex shedding frequency becomes slower; in the same diameter and inlet wind speed, the resistance and vortex street effect of the smooth circular conductor are stronger than the strand conductor.