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FLUID MECHANICS
ENVIRONNEMENT SCIENCES
SIMAC
Costal Agitation SIMulator : SIMAC
SIMAC is a simulator for wave propagation from the open sea to the coastal structures (natural or artificial). It is based on the coupling of two algorithms that allow to take into account all the physical phenomena affecting the wave propagation in shallow water and near the coastal structures.  
  • First, the wave propagation from the open sea to the neighbouring of the area to study (typically an harbour and/or a beach) is simulated. This first computation gives the characteristics of the incident wave at the entrance of the second simulated area.

    A fine calculation is then performed in second domain which takes into account the reflexion on physical boundaries, the diffraction and the refraction
    		• Toga Actuel
    port of TOGA residual agitation :
    Initial Situation     		Toga Futur
    port of TOGA residual agitation :
    Future Situation
  • A fine calculation is then performed in second domain which takes into account the reflexion on physical boundaries, the diffraction and the refraction
  • Local 3-dimensionnal zones, with mobile or fixed structures, completely reflecting or transmitting the waves energy, like wave attenuators for instance.
    • If it is necessary to include diffraction in the simulation, the combined refraction-diffraction problem may be solved by two manners :
  • The resolution of the parabolic form of the Berkhoff's equation by using a finite difference approach.
  • The setting-up of finite element method and a splitting of the domain by submodels. This last method is more accurate especially for complicated bathymetry.
    In the port or near the shore, the Berkhoff's equation is also solved with finite elements. The final result is the wave field at any point of the domain.
    • Maillage 3D
    1 -     		Boite
    2 -     		Agitation
    3 -
    Mandelieu la Napoule port extension project (06)
    1 - Mesh

    2 - 3D module : dynamic wave attenuators ACRIPEL.

    3 - Future residual agitation

    Examples:
          3D simulation of the propagation of waves above a submerged shoals
          Propagation of waves with SIMAC POSEIDON wave plan and Amplification factor
          Propagation of waves with SIMAC POSEIDON wave plan    




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