The influence of the waves in the areas near the port

Modern Technologies in Industrial Engineering 2015

Panaitescu, F.V.^1 ; Panaitescu, M.^1 ; Anton, I.A.^1

Constanta Maritime University, Faculty of Naval Electro-Mechanics, 104 Mircea cel Batran Street, Constanta

900663, Romania^1

关键词: Asymmetric design;    Directional waves;    Frequency spectra;    Hydrodynamic simulation;    Sediment transport pattern;    Significant wave height;    Wave characteristics;    Wave simulations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/95/1/012079/pdf
DOI  :  10.1088/1757-899X/95/1/012079

来源: IOP

【 摘 要 】

The paper investigates the influence of the waves in the areas of Constanta port and the North of Mamaia resort sandy coast. The port has an asymmetric design that protects them from the sea. This study analyses the port' influence on the waves, the wave driven current and the sediment transport patterns. The harbour is on a sandy coast consisting of sand with d50=0.70 mm (where d50 is diameter of sand particle) and sg=0.75 m in the entire area (where sg is significant wave height). Irregular, directional waves move towards the coast from 2700(West direction). Waves move over a water level corresponding to MWL=1m. The wave characteristics at the offshore boundary are Hm0=1.61 m (where Hm0is average wave height) and Tp=10.00 s (where Tpis the wave period). We are looking at an area that spans 10 000 m in the long-shore direction and 2500 m in the cross-shore direction. It is used the wave simulation with MIKE 21 PMS, and the hydrodynamic simulation with MIKE 21 HD. Irregular, directional waves are added at the offshore boundary of the wave model. The frequency spectrum is of JONSWAP type, but around the mean direction of wave propagation (270°) a cosndistribution of wave energy is used. At the other open boundaries symmetry boundary conditions are used. The wave simulation takes wave breaking into the consideration. The bed roughness is not considered. In this study, it is of interest to examine how the presence of the harbour influences the waves, the wave-driven current and the sediment transport patterns. When simulating of the wave driven currents with MIKE 21 HD we use constant values of velocity and Manning number all over the model area. The time slots are set to five seconds and the simulation runs for ten hours to ensure stable conditions. Finally the data are visualized flow, level and influence over the area of the coast..