A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Model Tests on the CERC Full Scale Test Floating Breakwater
Model tests with a floating breakwater in short-crested waves have been performed in scale 1:10. The breakwater is a model of a 2-pontoon CERC prototype. 2 versions are tested: fendered and stiff. Some tests in long-crested waves are also included. Wave elevation, anchor line forces, breakwater motions and hydrodynamic pressures have been measured. Simple numerical simulations of forces and motions are made. Experimental wave reduction is studied through maximum and significant wave heights and wave spectra. Wave transmission varies from 30% for 2s waves to 100% for 6s waves (full scale). Control of wave statistics and grouping is included. Waves in front of the model are also studied. Maximum and RMS values, auto- and cross-spectra, linear transfer functions and amplitude statistics of forces and motions are presented. The maximum force in a single sensor was 102 kN, while in a single anchor line it was larger than 105 kN. Non-linearities in motions and forces result in significantly larger extremes than predicted by linear theory. Preliminary comparisons to field measurements are made for waves and mooring forces. Keywords: Coastal engineering; Water waves. Norway. (edc)
Model Tests on the CERC Full Scale Test Floating Breakwater
Model tests with a floating breakwater in short-crested waves have been performed in scale 1:10. The breakwater is a model of a 2-pontoon CERC prototype. 2 versions are tested: fendered and stiff. Some tests in long-crested waves are also included. Wave elevation, anchor line forces, breakwater motions and hydrodynamic pressures have been measured. Simple numerical simulations of forces and motions are made. Experimental wave reduction is studied through maximum and significant wave heights and wave spectra. Wave transmission varies from 30% for 2s waves to 100% for 6s waves (full scale). Control of wave statistics and grouping is included. Waves in front of the model are also studied. Maximum and RMS values, auto- and cross-spectra, linear transfer functions and amplitude statistics of forces and motions are presented. The maximum force in a single sensor was 102 kN, while in a single anchor line it was larger than 105 kN. Non-linearities in motions and forces result in significantly larger extremes than predicted by linear theory. Preliminary comparisons to field measurements are made for waves and mooring forces. Keywords: Coastal engineering; Water waves. Norway. (edc)
Model Tests on the CERC Full Scale Test Floating Breakwater
A. Torum (author) / C. T. Stansberg (author) / G. O. Ottera (author) / O. H. Slattelid (author)
1989
228 pages
Report
No indication
English
Civil Engineering , Ocean Sciences & Technology , Breakwaters , Coastal engineering , Water waves , Amplitude , Anchor chains , Control , Detectors , Elevation , Field tests , Floating bodies , Hydrodynamics , Linearity , Loads(Forces) , Mathematical prediction , Model tests , Mooring , Motion , Nonlinear systems , Numerical analysis , Pontoons , Dynamic pressure , Pressure measurement , Reduction , Spectra , Statistics , Stiffness , Range(Extremes) , Theory , Transfer functions , Wave propagation , Foreign technology , Fendered breakwaters , Floating breakwaters
Model tests of a floating breakwater dock
| British Library Conference Proceedings | 1994
CERC bulletin / Civil Engineering Research Council, CERC
| TIBKAT | Nr. 1.1963