Details
| Original language | English |
|---|---|
| Article number | 117832 |
| Number of pages | 20 |
| Journal | Ocean engineering |
| Volume | 304 |
| Early online date | 15 Apr 2024 |
| Publication status | Published - 15 Jul 2024 |
Abstract
This study investigates the flow characteristics around a complex jacket-type foundation structure when subjected to steady current. The investigation is conducted through physical experiments and numerical simulations. A fully three-dimensional OpenFOAM model is implemented, solving the Unsteady Reynolds-averaged Navier–Stokes equations. In addition, physical experiments were carried out using Particle Image Velocimetry techniques to measure flow velocities around a joint element of the same jacket-type structure. High-resolution measurements were taken in several cross-sectional planes. The findings demonstrate a complex location-dependent flow pattern. Over the height of the jacket, the acceleration of flow and the vortex systems alter as the jacket narrows and distances between structural element change. Flow variations at different cross-sections along the jacket highlight the complex influence of specific jacket elements on the flow behavior. The inclination of piles, along with their varying diameters and arrangements, has a significant impact on the flow field. This makes the direct application of knowledge on the hydrodynamics around pile groups challenging. The geometry of the structure leads to an asymmetrical distribution of maximum shear stress amplification around the main piles, which influences scour depth expectations.
Keywords
- Complex structures, Hydrodynamics, Offshore wind energy, Particle image velocimetry (PIV), Pile groups, RANS, Turbulence modeling
ASJC Scopus subject areas
- Environmental Science(all)
- Environmental Engineering
- Engineering(all)
- Ocean Engineering
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Ocean engineering, Vol. 304, 117832, 15.07.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Hydrodynamics around a jacket-type foundation structure in steady current
T2 - A combined experimental and numerical study
AU - Satari, Ramish
AU - Sarma, Barnapratim
AU - Schendel, Alexander
AU - Welzel, Mario
AU - Krishna, Rahul
AU - Schlurmann, Torsten
AU - Neuweiler, Insa
N1 - Funding Information: This study has been carried out within the Collaborative Research Center (CRC) 1463 “Integrated design and operation methodology for offshore megastructures” and is funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - SFB 1463 - 434502799. Alexander Schendel gratefully acknowledges the support of the German Federal Ministry for Economic Affairs and Energy within the funded project “marTech” (BMWi: 0324196A-B)
PY - 2024/7/15
Y1 - 2024/7/15
N2 - This study investigates the flow characteristics around a complex jacket-type foundation structure when subjected to steady current. The investigation is conducted through physical experiments and numerical simulations. A fully three-dimensional OpenFOAM model is implemented, solving the Unsteady Reynolds-averaged Navier–Stokes equations. In addition, physical experiments were carried out using Particle Image Velocimetry techniques to measure flow velocities around a joint element of the same jacket-type structure. High-resolution measurements were taken in several cross-sectional planes. The findings demonstrate a complex location-dependent flow pattern. Over the height of the jacket, the acceleration of flow and the vortex systems alter as the jacket narrows and distances between structural element change. Flow variations at different cross-sections along the jacket highlight the complex influence of specific jacket elements on the flow behavior. The inclination of piles, along with their varying diameters and arrangements, has a significant impact on the flow field. This makes the direct application of knowledge on the hydrodynamics around pile groups challenging. The geometry of the structure leads to an asymmetrical distribution of maximum shear stress amplification around the main piles, which influences scour depth expectations.
AB - This study investigates the flow characteristics around a complex jacket-type foundation structure when subjected to steady current. The investigation is conducted through physical experiments and numerical simulations. A fully three-dimensional OpenFOAM model is implemented, solving the Unsteady Reynolds-averaged Navier–Stokes equations. In addition, physical experiments were carried out using Particle Image Velocimetry techniques to measure flow velocities around a joint element of the same jacket-type structure. High-resolution measurements were taken in several cross-sectional planes. The findings demonstrate a complex location-dependent flow pattern. Over the height of the jacket, the acceleration of flow and the vortex systems alter as the jacket narrows and distances between structural element change. Flow variations at different cross-sections along the jacket highlight the complex influence of specific jacket elements on the flow behavior. The inclination of piles, along with their varying diameters and arrangements, has a significant impact on the flow field. This makes the direct application of knowledge on the hydrodynamics around pile groups challenging. The geometry of the structure leads to an asymmetrical distribution of maximum shear stress amplification around the main piles, which influences scour depth expectations.
KW - Complex structures
KW - Hydrodynamics
KW - Offshore wind energy
KW - Particle image velocimetry (PIV)
KW - Pile groups
KW - RANS
KW - Turbulence modeling
UR - http://www.scopus.com/inward/record.url?scp=85190288718&partnerID=8YFLogxK
U2 - 10.1016/j.oceaneng.2024.117832
DO - 10.1016/j.oceaneng.2024.117832
M3 - Article
AN - SCOPUS:85190288718
VL - 304
JO - Ocean engineering
JF - Ocean engineering
SN - 0029-8018
M1 - 117832
ER -