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Ski jump - flow choking (6)

  • Ski jump - flow choking (6)

This photo shows a ski jump investigation with circular-shaped flip buckets in a hydraulic model at VAW. Flow choking occurs if the approach flow Froude number is below a certain threshold and a hydraulic jump develops on the flip bucket. Here the flip bucket radius is 0.40 m and the deflection angle 40°. The approach water depth is 0.05 m and the choking Froude number 2.9. The jet impinges close to the takeoff section and may develop a scour hole undermining its foundation.

Laboratory of Hydraulics, Hydrology and Glaciology (VAW), Swiss Federal Institute of Technology Zurich, Switzerland

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This web site was launched by Prof. Michele Mossa of the Polytechnic University of Bari (Italy) with the initial support of Fondazione Caripuglia, Bari, Italy for the Research Project LIC-MON of 2003 and of the Project IMCA (Integrated Monitoring of Coastal Areas) financed by MIUR PON D.M. 593/00. Later, the initiative was supported with other Prof. Michele Mossa’s funds, most recently provided by the RITMARE Project.

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