Focused waves and wave-structure interaction in a numerical wave tank

J Westphalen, D M Greaves, C J K Williams, A C Hunt-Raby, Jun Zang

Research output: Contribution to journalArticle

  • 35 Citations

Abstract

Sustainable and efficient design solutions are the aim for any engineer. In offshore engineering forces resulting from extreme wave impact are of special interest as these challenge the structure and the crew working in this harsh environment. Theoretical models tend to be limited to linear or weakly non-linear situations and are unable to predict the violent and turbulent effects of breaking waves in combination with wave run up on structures or green water loading. The classic approach for such cases is to carry out scale model tests in a physical wave tank and measure the forces, water levels and flow velocities at some chosen locations. Another approach is to use fully non-linear calculations, such as Computational Fluid Dynamics, which have the potential to investigate the design in different conditions at full scale. This paper deals with the generation and behaviour of extreme focused wave groups in a numerical wave tank. Non-linear effects of these extreme waves are shown and the implications for a numerical wave tank are discussed. Also the forces on horizontal and vertical cylinders, which represent simple models of offshore structures, are calculated. All numerical results are compared with measured data from physical experiments.
LanguageEnglish
Pages9-21
Number of pages13
JournalOcean Engineering
Volume45
DOIs
StatusPublished - May 2012

Fingerprint

Offshore structures
Water levels
Flow velocity
Computational fluid dynamics
Engineers
Water
Experiments

Cite this

Focused waves and wave-structure interaction in a numerical wave tank. / Westphalen, J; Greaves, D M; Williams, C J K; Hunt-Raby, A C; Zang, Jun.

In: Ocean Engineering, Vol. 45, 05.2012, p. 9-21.

Research output: Contribution to journalArticle

Westphalen, J ; Greaves, D M ; Williams, C J K ; Hunt-Raby, A C ; Zang, Jun. / Focused waves and wave-structure interaction in a numerical wave tank. In: Ocean Engineering. 2012 ; Vol. 45. pp. 9-21
@article{3d2d59da88904070bb58617273cf6d1b,
title = "Focused waves and wave-structure interaction in a numerical wave tank",
abstract = "Sustainable and efficient design solutions are the aim for any engineer. In offshore engineering forces resulting from extreme wave impact are of special interest as these challenge the structure and the crew working in this harsh environment. Theoretical models tend to be limited to linear or weakly non-linear situations and are unable to predict the violent and turbulent effects of breaking waves in combination with wave run up on structures or green water loading. The classic approach for such cases is to carry out scale model tests in a physical wave tank and measure the forces, water levels and flow velocities at some chosen locations. Another approach is to use fully non-linear calculations, such as Computational Fluid Dynamics, which have the potential to investigate the design in different conditions at full scale. This paper deals with the generation and behaviour of extreme focused wave groups in a numerical wave tank. Non-linear effects of these extreme waves are shown and the implications for a numerical wave tank are discussed. Also the forces on horizontal and vertical cylinders, which represent simple models of offshore structures, are calculated. All numerical results are compared with measured data from physical experiments.",
author = "J Westphalen and Greaves, {D M} and Williams, {C J K} and Hunt-Raby, {A C} and Jun Zang",
year = "2012",
month = "5",
doi = "10.1016/j.oceaneng.2011.12.016",
language = "English",
volume = "45",
pages = "9--21",
journal = "Ocean Engineering",
issn = "0029-8018",
publisher = "Elsevier",

}

TY - JOUR

T1 - Focused waves and wave-structure interaction in a numerical wave tank

AU - Westphalen,J

AU - Greaves,D M

AU - Williams,C J K

AU - Hunt-Raby,A C

AU - Zang,Jun

PY - 2012/5

Y1 - 2012/5

N2 - Sustainable and efficient design solutions are the aim for any engineer. In offshore engineering forces resulting from extreme wave impact are of special interest as these challenge the structure and the crew working in this harsh environment. Theoretical models tend to be limited to linear or weakly non-linear situations and are unable to predict the violent and turbulent effects of breaking waves in combination with wave run up on structures or green water loading. The classic approach for such cases is to carry out scale model tests in a physical wave tank and measure the forces, water levels and flow velocities at some chosen locations. Another approach is to use fully non-linear calculations, such as Computational Fluid Dynamics, which have the potential to investigate the design in different conditions at full scale. This paper deals with the generation and behaviour of extreme focused wave groups in a numerical wave tank. Non-linear effects of these extreme waves are shown and the implications for a numerical wave tank are discussed. Also the forces on horizontal and vertical cylinders, which represent simple models of offshore structures, are calculated. All numerical results are compared with measured data from physical experiments.

AB - Sustainable and efficient design solutions are the aim for any engineer. In offshore engineering forces resulting from extreme wave impact are of special interest as these challenge the structure and the crew working in this harsh environment. Theoretical models tend to be limited to linear or weakly non-linear situations and are unable to predict the violent and turbulent effects of breaking waves in combination with wave run up on structures or green water loading. The classic approach for such cases is to carry out scale model tests in a physical wave tank and measure the forces, water levels and flow velocities at some chosen locations. Another approach is to use fully non-linear calculations, such as Computational Fluid Dynamics, which have the potential to investigate the design in different conditions at full scale. This paper deals with the generation and behaviour of extreme focused wave groups in a numerical wave tank. Non-linear effects of these extreme waves are shown and the implications for a numerical wave tank are discussed. Also the forces on horizontal and vertical cylinders, which represent simple models of offshore structures, are calculated. All numerical results are compared with measured data from physical experiments.

UR - http://www.scopus.com/inward/record.url?scp=84858761431&partnerID=8YFLogxK

UR - http://dx.doi.org/10.1016/j.oceaneng.2011.12.016

U2 - 10.1016/j.oceaneng.2011.12.016

DO - 10.1016/j.oceaneng.2011.12.016

M3 - Article

VL - 45

SP - 9

EP - 21

JO - Ocean Engineering

T2 - Ocean Engineering

JF - Ocean Engineering

SN - 0029-8018

ER -