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- Title
Modeling Optimal Locations of Breakwaters to Mitigate Wind-Induced Waves in Bahar Al-Najaf Depression Using MIKE21.
- Authors
M. Alturfi, Uday Abdul Sahib; Shukur, Abdul-Hassan K.
- Abstract
The waves produced by the wind are the most noticeable and frequently the most significant waves in the range of waves at sea. Given the limited amount of knowledge on the mathematical modelling of the wind induced wave in lake or shallow water depth, considered to this point. In this paper, a briefly look at how these waves are formed by the wind in the Bahar Al-Najaf depression, as well as some of the essential properties that arise. A numerical model based on unstructured mesh is proposed to predicate and visualize wave conditions. MIKE21 spectral model base on mass balance equation was used as a numerical tool to find the optimal location of mitigation structures to dissipation the wave energy near the neighbor structures. The amount of variation between the simulated wave heights and those calculated using an empirical equation is less than 9%. Three schemes for breakwater has been tested to find the optimal location and orientation of breakwater. The results showed that the three schemes used for the breakwater gave varying results, both depending on its location and characteristics. The first scheme gave a covering area approaching 1.19 km², and the second scheme gave approximately 0.889 km, and third scheme gave a covering area 1.11 km². This study showed that the wave heights at the upstream and downstream were measured after the breakwater had been constructed, and they were found to be between 0.35 and 0.7 m. This implies a decrease of around 40% to 60% in comparison to the original heights of 1.25 to 0.9 m. All of these schemes are good to a certain extent in dispersing the energy by breaking the single pattern of the wave at rates that may reach 50% of the height of the arriving wave, the first scenario was the best and most efficient in terms of energy dispersion.
- Subjects
WIND waves; BREAKWATERS; SUBMERGED structures; ROADKILL; OCEAN waves; AERODYNAMICS of buildings; WAVE energy; WATER depth
- Publication
International Journal of Safety & Security Engineering, 2024, Vol 14, Issue 1, p233
- ISSN
2041-9031
- Publication type
Article
- DOI
10.18280/ijsse.140123