Impact pressure distribution on a monopile structure excited by irregular breaking wave

• Autorzy: Veic D. , Sulisz W.

Identyfikatory

DOI

10.2478/pomr-2018-0019

• Języki publikacji: EN

Abstrakty

EN

The problem of impact pressure distribution on a monopole structure excited by irregular breaking waves is investigated. The analysis is performed by applying a numerical model that combines potential flow model with a Navier-Stokes/VOF solution. The temporal pressure distribution is analysed for two breaking wave cases characterized by the significant difference in the steepness of the wave front. The peak impact pressures are observed in the region below the overturning wave jet where the pressure increases rapidly resulting in a peak value of the slamming coefficient equal to Cs=2π. The vertical load distribution provided by the derived model is more realistic than a rectangular shape distribution applied in engineering practice. This is because the vertical load distribution strongly depends on breaking wave shape and it is difficult to uniquely approximate such a load distribution by a rectangle.

Słowa kluczowe

EN

impact pressure distribution; monopile structure; breaking wave slamming process

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2018
• Tom: S 1
• Strony: 29--35
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

autor

Veic D.

• Institute of Hydro-Engineering Polish Academy of Sciences 7 Kościerska St. 80 - 328 Gdańsk Poland

autor

Sulisz W.

• Institute of Hydro-Engineering, Polish Academy of Sciences, Poland

Bibliografia

• 1. Bihs, H., Kamath, A., Alagan Chella, M., & Arntsen, O. A. (2016). Breaking-Wave Interaction with Tandem Cylinders under Different Impact Scenarios. Journal of Waterway, Port, Coastal, and Ocean Engineering, 04016005.
• 2. Chan, E. S., Cheong, H. F., & Tan, B. C. (1995). Laboratory study of plunging wave impacts on vertical cylinders. Coastal Engineering, 25(1), 87-107.
• 3. Chella M.A. (2016). Breaking Wave Characteristic and Breaking Wave Forces on Slender Cylinders, Ph.D. at NTNU
• 4. Engsig-Karup, A. P., Bingham, H. B., & Lindberg, O. (2009). An efficient flexible-order model for 3D nonlinear water waves. Journal of computational physics, 228(6), 2100-2118.
• 5. Ghadirian, A., Bredmose, H., & Dixen, M. (2016, September). Breaking phase focused wave group loads on offshore wind turbine monopiles. In Journal of Physics: Conference Series (Vol. 753, No. 9, p. 092004). IOP Publishing.
• 6. Goda, Y., S. Haranaka, and M. Kitahata (1966). Study of impulsive breaking wave forces on piles. Report Port and Harbour Technical Research Institute 6.5, 1-30
• 7. Hildebrandt, A., & Schlurmann, T. (2012). Breaking Wave Kinematics, local Pressures and Forces on a Tripod Support Structure. In Proceedings of the Coastal Engineering Conference, No. 33
• 8. IEC (2009), International Electrotechnical Commission, IEC 61400-3, Wind Turbines, Part 3.
• 9. Kamath, A., Chella, M. A., Bihs, H., & Arntsen, O. A. (2015). Breaking Wave Interaction with a Vertical Cylinder and the Effect of Breaker Location. CFD based Investigation of Wave-Structure Interaction and Hydrodynamics of an Oscillating Water Column Device, 171.
• 10. Morison, J. R., Johnson, J. W., & Schaaf, S. A. (1950). The force exerted by surface waves on piles. Journal of Petroleum Technology, 2(05), 149-154.
• 11. Paulsen (2013), Efficient computations of wave loads on offshore structures, PhD thesis, DTU –Department of Mechanical Engineering
• 12. Paulsen, B. T., Bredmose, H., & Bingham, H. B. (2014). An efficient domain decomposition strategy for wave loads on surface piercing circular cylinders. Coastal Engineering, 86, 57-76.
• 13. Veic D (2018), Effect of the Breaking Wave shape on the Temporal and Spatial Pressure Distribution around a Monopile Support Structure, Ph.D.
• 14. Wienke, J. (2001). Druckschlagbelastung auf schlanke zylindrische Bauwerke durch brechende Wellen. Technical University of Braunschweig, Germany.10
• 15. Wienke, J., & Oumeraci, H. (2005). Breaking wave impact force on a vertical and inclined slender pile—theoretical and large-scale model investigations. Coastal Engineering, 52(5), 435-462.
• 16. Xiao, H., & Huang, W. (2014). Three-dimensional numerical modeling of solitary wave breaking and force on a cylinder pile in a coastal surf zone. Journal of Engineering Mechanics, 141(8), A4014001.
• 17. Zhou, D., Chan, E. S., & Melville, W. K. (1991). Wave impact pressures on vertical cylinders. Applied Ocean Research, 13(5), 220-234.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).