Details
| Original language | English |
|---|---|
| Title of host publication | Scour and Erosion IX |
| Subtitle of host publication | Proceedings of the 9th International Conference on Scour and Erosion (ICSE 2018) |
| Editors | Yeh Keh-Chia |
| Place of Publication | London |
| Publisher | Routledge, Taylor & Francis Group |
| Pages | 267-273 |
| Number of pages | 7 |
| ISBN (electronic) | 978-0-367-07467-8 |
| Publication status | Published - Dec 2019 |
| Event | 9th International Conference on Scour and Erosion (ICSE 2018) - Taipei, Taiwan Duration: 5 Nov 2018 → 8 Nov 2018 Conference number: 9 |
Abstract
The progressive expansion of offshore wind energy towards greater water depths demands for an optimization of foundation structure designs to a wider range of load conditions. In offshore waters, wind driven wave irregularity and directionality become important aspects of realistic sea states. To further improve the scour prediction in marine environment a novel experimental study was conducted to investigate the influence of multidirectional waves on the scouring process. The tests were carried out in the 3D wave basin of the Ludwig-Franzius-Institute, Leibniz University Hannover, Germany and a monopile structure was simulated by a transparent pile made of acrylic glass. The test program included experiments with multidirectional waves as well as superimposed with oblique currents and were complemented by tests with unidirectional waves to provide additional reference for comparison. Despite identical total wave energy between the multi-and unidirectional wave spectra, distinct differences in scour depth and rate could be observed, which inevitably can only be attributed to the influence of wave spreading on morphodynamical processes around the pile. For wave-only conditions scour depths induced by multidirectional waves were on average 33% smaller than those for unidirectional waves. In combined wave and current conditions scour depths were found to slightly larger for multidirectional than for unidirectional waves.
ASJC Scopus subject areas
- Environmental Science(all)
- Water Science and Technology
- Engineering(all)
- Ocean Engineering
- Environmental Science(all)
- Environmental Engineering
Sustainable Development Goals
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Scour and Erosion IX : Proceedings of the 9th International Conference on Scour and Erosion (ICSE 2018). ed. / Yeh Keh-Chia. London: Routledge, Taylor & Francis Group, 2019. p. 267-273.
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Experimental study on scour around a pile in multidirectional (Spreading) random waves
AU - Schendel, Alexander
AU - Hildebrandt, Arndt
AU - Schlurmann, Torsten
N1 - Conference code: 9
PY - 2019/12
Y1 - 2019/12
N2 - The progressive expansion of offshore wind energy towards greater water depths demands for an optimization of foundation structure designs to a wider range of load conditions. In offshore waters, wind driven wave irregularity and directionality become important aspects of realistic sea states. To further improve the scour prediction in marine environment a novel experimental study was conducted to investigate the influence of multidirectional waves on the scouring process. The tests were carried out in the 3D wave basin of the Ludwig-Franzius-Institute, Leibniz University Hannover, Germany and a monopile structure was simulated by a transparent pile made of acrylic glass. The test program included experiments with multidirectional waves as well as superimposed with oblique currents and were complemented by tests with unidirectional waves to provide additional reference for comparison. Despite identical total wave energy between the multi-and unidirectional wave spectra, distinct differences in scour depth and rate could be observed, which inevitably can only be attributed to the influence of wave spreading on morphodynamical processes around the pile. For wave-only conditions scour depths induced by multidirectional waves were on average 33% smaller than those for unidirectional waves. In combined wave and current conditions scour depths were found to slightly larger for multidirectional than for unidirectional waves.
AB - The progressive expansion of offshore wind energy towards greater water depths demands for an optimization of foundation structure designs to a wider range of load conditions. In offshore waters, wind driven wave irregularity and directionality become important aspects of realistic sea states. To further improve the scour prediction in marine environment a novel experimental study was conducted to investigate the influence of multidirectional waves on the scouring process. The tests were carried out in the 3D wave basin of the Ludwig-Franzius-Institute, Leibniz University Hannover, Germany and a monopile structure was simulated by a transparent pile made of acrylic glass. The test program included experiments with multidirectional waves as well as superimposed with oblique currents and were complemented by tests with unidirectional waves to provide additional reference for comparison. Despite identical total wave energy between the multi-and unidirectional wave spectra, distinct differences in scour depth and rate could be observed, which inevitably can only be attributed to the influence of wave spreading on morphodynamical processes around the pile. For wave-only conditions scour depths induced by multidirectional waves were on average 33% smaller than those for unidirectional waves. In combined wave and current conditions scour depths were found to slightly larger for multidirectional than for unidirectional waves.
KW - Erosion
KW - Ocean currents
KW - Offshore oil well production
KW - Scour
KW - Software testing
KW - Structural optimization
KW - Wave energy conversion
KW - Wind power
KW - Foundation structures
KW - Load condition
KW - Marine environment
KW - Multidirectional waves
KW - Off-shore wind energy
KW - Progressive expansion
KW - Unidirectional waves
KW - Wind-driven waves
KW - Piles
UR - http://www.scopus.com/inward/record.url?scp=85056800339&partnerID=8YFLogxK
M3 - Conference contribution
SP - 267
EP - 273
BT - Scour and Erosion IX
A2 - Keh-Chia, Yeh
PB - Routledge, Taylor & Francis Group
CY - London
T2 - 9th International Conference on Scour and Erosion (ICSE 2018)
Y2 - 5 November 2018 through 8 November 2018
ER -