Chapter III
Numerical Modeling
51
III.6. Conclusion
In conclusion, our numerical modeling has allowed us to the most unfavorable wave directions:
North-Northwest, North, North-Northeast, and Northeast. Our observations highlight the
significant role played by the morpho-bathymetry of the bay of Algiers in effectively reducing
wave heights that impact coastal structures.
At the Marina, there has been a remarkable reduction of over 55% in wave heights for largeamplitude waves. Furthermore, the interaction between waves and the seafloor predominantly
directs wave propagation towards the north in the Marina area.
In contrast, the reduction in wave heights at the Port has been less pronounced, reaching
approximately 20% for large-amplitude waves.
Regarding the current patterns, it appears that extreme events do not significantly affect the local
current velocities, which remain consistent across various simulated climate scenarios. However,
the incident wave direction plays a significant role in shaping the current patterns, resulting in
multiple flow directions and generated channels. The most notable impact is observed from
waves coming from the North-Northeast, which generate circular currents on either side of the
Marina and the Port. The recorded current velocities range from 0.3 m/s to 0.45 m/s.
The simulations demonstrate that both the Marina and the Port of Algiers are well-protected, as
even during the most extreme events, wave heights remain significantly reduced at the entrance
of the channel. In the Port, wave heights range between 0.3 m and 0.6 m for all return periods,
while at the entrance of the channel in the Marina, they range between 0.4 m and 0.7 m.