Wind Tunnel Test Investigation on Unsteady Aerodynamic Coefficients of Iced 4-Bundle Conductors

Table 3

Minimum and maximum blockage.

		Ice shape
		Crescent			Sector
Ice thickness (mm)		14.5	24	33	21.5	30
Blockage (%)	Minimum	3.94	3.94	3.94	3.01	4.06
	Maximum	4.25	5.21	6.12	8.73	10.83