Investigating the impact of half pipe barriers on hydrodynamics of waves

Abstract EN

In the framework of the integrated coastal zone management (ICZM) project andimplementing innovative breakwaters (half pipes barrier) in Egypt, this research was initiated in order to determine their impact on hydrodynamics of waves, numerically.

Primarily, literature in the field of breakwaters were assembled and scrutinized.

A numerical model (Flow 3D) was selected to be implemented.

Several barriers, with different characteristics, were modeled and wave hydrodynamics properties (i.

e.

reflection and transmission) were designated.

Furthermore, the velocity beneath and behind the barrier so as pressure were numerically modeled.

The results were analyzed and presented on graphs.

Furthermore the results were discussed, from which conclusions so as recommendations were obtained, where specific dimensions for the barrier were designated.

Moreover, the research results indicated that higher velocities were recorded for deeper barrier draft.

In addition, the research results flagged-out that the more its draft, the greater is its efficiency and the less is the wave transmission.

Moreover, theresultsindicated that the proposed barrier dissipates the energy of the oblique waves more than orthogonal waves by about 5% .

Innovative about this investigation is the prioritization of implementing deeper drafts to help in reducing the wave height behind the barrier, which leads to an economic implementation of barriers.