Conference proceeding
Mutual Influence of Subsea Power Cables and Rock Bags on Their Hydrodynamic Behaviors
Proceedings of ASME 2025 44th International Conference on Ocean, Offshore and Arctic Engineering, Vol.5, OMAE2025-157158
ASME 2025 44th International Conference on Ocean, Offshore and Arctic Engineering, Vancouver, British Columbia, Canada, Jun. 22 - 27, 2025, 44th (Vancouver, British Columbia, Canada, 22/06/2025–27/06/2025)
22/06/2025
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Abstract
Subsea Rock Bags (RBs), also known as Filter Units (FUs), are cylindrical mesh bags filled with rock aggregates to a certain weight. They are commonly used for scour protection and secondary stabilization of subsea infrastructures, including subsea power cables in offshore wind farms. This study investigates the hydrodynamics of both rock bags and cables by placing them in proximity to assess their mutual influence. To enable a meaningful comparison, tests are conducted on a rock bag with the same shape, both with and without the presence of cables. The results are then compared under different ocean flow conditions. It is found that cables can significantly affect the force magnitudes and dynamics on a subsea rock bag, through changes in local flow conditions and, consequently, the pressure distribution on the rock bag. Conversely, rock bags also introduce local changes to the sectional forces on the cable, although these changes are confined to a few diameters within the rock bags. These findings provide new insights into the forces acting on rock bags and the flow dynamics responsible for their behavior. These outcomes are expected to improve the stability design of rock bags, ultimately reducing the risk of subsea infrastructure damage due to ocean flows.
Details
- Title
- Mutual Influence of Subsea Power Cables and Rock Bags on Their Hydrodynamic Behaviors
- Creators
- Feifei Tong - The University of AdelaideTerry Griffiths - Aurora Offshore Engineering (Perth, Australia)Scott Draper - The University of Western AustraliaHongwei An - The University of Western AustraliaJay Clayton - Aurora Offshore Engineering (Perth, Australia)Jack Jorgensen - The University of Western AustraliaLiang Cheng - The University of Western Australia
- Publication Details
- Proceedings of ASME 2025 44th International Conference on Ocean, Offshore and Arctic Engineering, Vol.5, OMAE2025-157158
- Conference
- ASME 2025 44th International Conference on Ocean, Offshore and Arctic Engineering, Vancouver, British Columbia, Canada, Jun. 22 - 27, 2025, 44th (Vancouver, British Columbia, Canada, 22/06/2025–27/06/2025)
- Publisher
- American Society of Mechanical Engineers; NJ, USA
- Identifiers
- 991013309818702368
- Copyright
- © 2025, The American Society of Mechanical Engineers
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Conference proceeding