Experimental study of non-linear wave impact on offshore wind turbine flundations

Jun Zang, P. H. Taylor, Gerald Morgan, M Tello, J Grice, J Orszaghova

Research output: Contribution to conferencePaper

Abstract

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.

Conference

ConferenceCoastlab10 – 3rd International Conference on the Application of Physical Modelling to Port and Coastal Protection
CountrySpain
CityBarcelona
Period28/09/101/10/10

Fingerprint

Offshore wind turbines
Hydrodynamics
Piercing
Decomposition
Fluids
Experiments

Cite this

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.

Experimental study of non-linear wave impact on offshore wind turbine flundations. / Zang, Jun; Taylor, P. H.; Morgan, Gerald; Tello, M; Grice, J; Orszaghova, J.

2010. Paper presented at Coastlab10 – 3rd International Conference on the Application of Physical Modelling to Port and Coastal Protection, Barcelona, Spain.

Research output: Contribution to conferencePaper

Zang, J, Taylor, PH, 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, 28/09/10 - 1/10/10, .
Zang J, Taylor PH, Morgan G, Tello M, Grice J, Orszaghova J. Experimental study of non-linear wave impact on offshore wind turbine flundations. 2010. Paper presented at Coastlab10 – 3rd International Conference on the Application of Physical Modelling to Port and Coastal Protection, Barcelona, Spain.
Zang, Jun ; Taylor, P. H. ; Morgan, Gerald ; Tello, M ; Grice, J ; Orszaghova, J. / 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.
@conference{60f16f69cfe243bf9a67bcad3fc1cf89,
title = "Experimental study of non-linear wave impact on offshore wind turbine flundations",
abstract = "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.",
author = "Jun Zang and Taylor, {P. H.} and Gerald Morgan and M Tello and J Grice and J Orszaghova",
year = "2010",
language = "English",
note = "Coastlab10 – 3rd International Conference on the Application of Physical Modelling to Port and Coastal Protection ; Conference date: 28-09-2010 Through 01-10-2010",

}

TY - CONF

T1 - Experimental study of non-linear wave impact on offshore wind turbine flundations

AU - Zang,Jun

AU - Taylor,P. H.

AU - Morgan,Gerald

AU - Tello,M

AU - Grice,J

AU - Orszaghova,J

PY - 2010

Y1 - 2010

N2 - 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.

AB - 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.

M3 - Paper

ER -