A novel analysis method is proposed for the fluid loading on a surface piercing cylinder in steep waves. This is based on experiments using compact focussed wave groups where phase can be explicitly controlled. By combining measured force time histories for a steep wave group and that from the same wave group but inverted, the complete harmonic structure of the total hydrodynamic loading can be extracted. The 2nd-5th harmonic load components scale with the appropriate power of the envelope of the linear force component in both time variation and amplitude. This justifies the use of a Stokes-like decomposition of hydrodynamic load comparable to the classical treatment of undisturbed free wave elevation.
|Publication status||Published - 2010|
|Event||Coastlab10 – 3rd International Conference on the Application of Physical Modelling to Port and Coastal Protection - Barcelona, Spain|
Duration: 28 Sep 2010 → 1 Oct 2010
|Conference||Coastlab10 – 3rd International Conference on the Application of Physical Modelling to Port and Coastal Protection|
|Period||28/09/10 → 1/10/10|
Zang, J., Taylor, P. H., Morgan, G., Tello, M., Grice, J., & Orszaghova, J. (2010). Experimental study of non-linear wave impact on offshore wind turbine flundations. Paper presented at Coastlab10 – 3rd International Conference on the Application of Physical Modelling to Port and Coastal Protection, Barcelona, Spain.