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**Harvard**

Trumars, J. (2003) *Simulation of Irregular Waves and Wave Induced Loads on Wind Power Plants in Shallow Water*. Göteborg : Chalmers University of Technology (Doktorsavhandlingar och licentiatuppsatser på Vatten Miljö Transport, nr: 7).

** BibTeX **

@book{

Trumars2003,

author={Trumars, Jenny},

title={Simulation of Irregular Waves and Wave Induced Loads on Wind Power Plants in Shallow Water},

abstract={The essay gives a short introduction to waves and discusses the problem with non-linear waves in shallow water and how they effect an offshore wind energy converter. The focus is on the realisation of non-linear waves in the time domain from short-term statistics in the form of a variance density spectrum of the wave elevation. For this purpose the wave transformation from deep water to the near to shore site of a wind energy farm at Bockstigen has been calculated with the use of SWAN (Simulating WAves Near Shore). The result is a wave spectrum, which can be used as input to the realisation. The realisation of waves is done by perturbation theory to the first and second-order. The properties calculated are the wave elevation, water particle velocity and acceleration.
The wave heights from the second order perturbation equations are higher than those from the first order perturbation equations. This is also the case for the water particle kinematics. The increase of variance is significant between the first order and the second order realisation. The calculated wave elevation exhibits non-linear features as the peaks become sharper and the troughs flatter.
The resulting forces are calculated using Morisons equation. For second order force and base moment there is an increase in the maximum values. The force and base moment are largest approximately at the zero up and down crossing of the wave elevation. This indicates an inertia dominated wave load.
So far the flexibility and the response of the structure have not been taken into account. They are, however, of vital importance.
For verification of the wave model the results will later on be compared with measurements at Bockstigen off the coast of Gotland in the Baltic Sea. },

publisher={Institutionen för Vatten Miljö Transport, Vågor och hydraulik, Chalmers tekniska högskola,},

place={Göteborg},

year={2003},

series={Doktorsavhandlingar och licentiatuppsatser på Vatten Miljö Transport, no: 7},

keywords={Non-linear wave models, wind energy converter, shallow water, perturbation theory, ocean engineering, wave load},

note={30},

}

** RefWorks **

RT Dissertation/Thesis

SR Electronic

ID 7350

A1 Trumars, Jenny

T1 Simulation of Irregular Waves and Wave Induced Loads on Wind Power Plants in Shallow Water

YR 2003

AB The essay gives a short introduction to waves and discusses the problem with non-linear waves in shallow water and how they effect an offshore wind energy converter. The focus is on the realisation of non-linear waves in the time domain from short-term statistics in the form of a variance density spectrum of the wave elevation. For this purpose the wave transformation from deep water to the near to shore site of a wind energy farm at Bockstigen has been calculated with the use of SWAN (Simulating WAves Near Shore). The result is a wave spectrum, which can be used as input to the realisation. The realisation of waves is done by perturbation theory to the first and second-order. The properties calculated are the wave elevation, water particle velocity and acceleration.
The wave heights from the second order perturbation equations are higher than those from the first order perturbation equations. This is also the case for the water particle kinematics. The increase of variance is significant between the first order and the second order realisation. The calculated wave elevation exhibits non-linear features as the peaks become sharper and the troughs flatter.
The resulting forces are calculated using Morisons equation. For second order force and base moment there is an increase in the maximum values. The force and base moment are largest approximately at the zero up and down crossing of the wave elevation. This indicates an inertia dominated wave load.
So far the flexibility and the response of the structure have not been taken into account. They are, however, of vital importance.
For verification of the wave model the results will later on be compared with measurements at Bockstigen off the coast of Gotland in the Baltic Sea.

PB Institutionen för Vatten Miljö Transport, Vågor och hydraulik, Chalmers tekniska högskola,

T3 Doktorsavhandlingar och licentiatuppsatser på Vatten Miljö Transport, no: 7

LA eng

LK http://publications.lib.chalmers.se/records/fulltext/7350/7350.pdf

OL 30