Esandi, JM;
Buldakov, E;
Simons, R;
Stagonas, D;
(2020)
An experimental study on wave forces on a vertical cylinder due to spilling breaking and near-breaking wave groups.
Coastal Engineering
, 162
, Article 103778. 10.1016/j.coastaleng.2020.103778.
Preview |
Text
Paper_revised.pdf - Accepted Version Download (2MB) | Preview |
Abstract
This paper highlights the importance of spilling breaking waves in the design of offshore structures. Although wave loading on offshore structures due to non-breaking waves has been extensively studied, wave loading due to breaking waves is uncertain and not very well understood. Plunging breaking waves in deep water are very unusual, whereas spilling breaking waves are very common in extreme seas. Nevertheless, no significant research efforts have been made to study the effects of spilling breaking waves. The present study addresses this, comparing the wave loading from highly nonlinear non-breaking waves and spilling breaking waves. Focused wave groups have been used to generate the non-breaking and spilling breaking wave conditions in a wave tank. The experiments have shown that spilling breaking waves generate significantly larger forces on the cylindrical model than highly non-linear non-breaking waves of equivalent size. This is shown to be due to the direct excitation at high frequency as well as the resonant and impact excitation of higher natural frequency modes. It is concluded that spilling breaking waves can generate very significant forces and should therefore be considered in the design of offshore structures.
| Type: | Article |
|---|---|
| Title: | An experimental study on wave forces on a vertical cylinder due to spilling breaking and near-breaking wave groups |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.coastaleng.2020.103778 |
| Publisher version: | https://doi.org/10.1016/j.coastaleng.2020.103778 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Wave-structure interactions, Wave groups, Extreme waves, Breaking waves |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10111602 |
Archive Staff Only
 |
View Item |
