Author(s)

D. Borsani, E. Larcan, S. Mambretti & E. Orsi

Abstract

Pressure fluctuations have been recorded on the upstream face of a sill with the presence of a hydraulic jump. Pressures have been investigated through 12 different flow configurations and in 9 vertical points on the central axis of the sill. The maximum-recorded value depends both on the sampling frequency and on the experiment duration: that leads to the question of which pressure value has to be considered to design the structures. Different models of structures have been adopted. A comparison with natural frequencies of such structures is carried out, after performing a scale transformation of both pressures and frequencies using the Froude similitude, according to different authors. Natural frequencies of the simpler structures have been computed, while they have been take

Keywords