Study of rubble mound and caisson type breakwaters by experimental and numerical modelling under extreme waves

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Date

2016

Author

Doğan, Gözde Güney

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Many coastal structures are designed without considering loads of long waves or extreme waves although they are constructed in areas prone to encounter these waves. Performance of two different types of coastal structures, rubble mound and caisson type breakwaters, is investigated under specified extreme wave conditions. In the first part of the study, laboratory experiments are conducted to observe the damage and failure phenomenon of the two types of breakwaters simultaneously which were designed according to wind waves but tested under six different extreme wave conditions. Pressure measurements along the front surface and bottom surface of the vertical wall in caisson type breakwater are also carried out within the physical model experiments for further investigation about the acting wave forces on the concrete blocks of the caisson breakwater. In the second part, the caisson type breakwater is modeled using a numerical software, IH-2VOF, which is one of the RANS models that can be applied to simulate hydrodynamic conditions around coastal structures. Two cases of the laboratory experiments are simulated by IH-2VOF model and pressure data is obtained from these simulations. Finally, the pressure measurements of laboratory experiments are compared with the results obtained from the numerical model, IH-2VOF and presented for two wave conditions along the front and bottom surfaces of vertical wall in caisson type breakwater.

Subject Keywords

Breakwaters., Shore protection., Coastal engineering., Hydraulic engineering.

URI

http://etd.lib.metu.edu.tr/upload/12619827/index.pdf
https://hdl.handle.net/11511/25494

Collections

Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

G. G. Doğan, “Study of rubble mound and caisson type breakwaters by experimental and numerical modelling under extreme waves,” M.S. - Master of Science, Middle East Technical University, 2016.