VIBRATIONS IN MULTIPLE CONDUCTOR BUNDLES
(1974)Abstract
The paper describes the characteristics of vibrations that occur in multiple bundles of conductors, due to
wake effects, otherwise known as subspan-osci//ation and due to the detachment of the vortices, otherwise
known as aeolian vibrations.
The authors sum up the present state of the research developed jointly by ENEL 's Electrical Research
Centre, the Applied Mechanics Institute of the Milan Polytechnic, and the Salvi Company, in this field.
The following more important aspects of this research are described :
- Measurements in wind-tunnel to determine the field of force acting on a cylinder placed in the wake
of another and the field of force acting on a cylinder due to the detachment of vortices.
- Creation of an analytical model to interpret the nature of the phenomenon.
- Comparison in a wind-tunnel of the results obtained by the mathematical model with those obtained
experimentally. e -Creation of a mathematical model to simulate the behaviour of an actual bundle of conductors.
- Comparison between the results obtained by the mathematical model and those obtained experimentally
on a span installed at Passo di Pradareno.
