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Details of Grant 

EPSRC Reference: GR/J22467/01
Title: VISCOUS DAMPING OF TLP HULLS (COM 26)
Principal Investigator: Bearman, Professor PW
Other Investigators:
Researcher Co-Investigators:
Project Partners:
Department: Aeronautics
Organisation: Imperial College London
Scheme: Standard Research (Pre-FEC)
Starts: 11 April 1994 Ends: 10 April 1996 Value (£): 96,512
EPSRC Research Topic Classifications:
Fluid Dynamics
EPSRC Industrial Sector Classifications:
Transport Systems and Vehicles
Related Grants:
Panel History:  
Summary on Grant Application Form
An experimental investigation will be conducted to provide data to predict the viscous damping of TLP hulls. A special tank will be constructed, 2.5 m a 2.5 m x 1.8 m deep, and bodies up to 250 mm in diameter will be tested. The research will involve measurements of damping at low KC numbers and high Beta values for circular and rectangular cross section cylinders. Finite aspect bodies will also be tested to determine the contribution of viscous damping from free ends. In the case of rectangular cylinders, the influence of corner radius on damping will be studied. Flow visualisation will be used to assess the state of the boundary layer flow and to study the development of three dimensional Honji type instabilities. Also conditions for the onset of separation will be investigated. The influence of blockage on damping will be studied as part of the investigation. Using the results obtained above, the damping of a typical TLP hull will be predicted. This will then be compared with the measured damping on a model of the hull.
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Organisation Website: http://www.imperial.ac.uk