Development LMF (ECN/CNRS), HydrOcean, Bassin d’Essais des Carènes (DGA)

Particle method
Discretization of the Navier-Stokes equations on a kernel interpolation
Lagrangienne spatial resolution
Explicit temporal resolution

Free Surface Nonlinear free surface which enables connections or heavy fragmentation of the free surface
Main features

2D and 3D code
6 degrees of freedom model
MPI parallelisation
Geometry defined by a arbitrary 3D surfacic mesh
Fluid structure model SPH / SPH
Coupled fluid structure SPH / FEM (Aster ...)
Variable spatial discretization

Application area and validation test cases

Flows with very high dynamics (impact, sloshing, slamming ...)
Flow over complex geometries or topologies (flooding ...)
Flow around moving bodies or deformable bodies
Impact of complex geometries
Coupled fluid / structure simulations

Key benefits

Lagrangian method without mesh
No specific procedure for the capture or tracking of free surface
No problems related to mesh treatments or deformations
Simulation of disconnection / re-connection of the interface
Easy description of large deformations of the free surface (jets, breaking waves...)
Simplicity of implementation of the computations
Low dissipation in the wake
Multibodies with arbitrary relative motions

Explicit method
Low time steps enabling the capture of forces and pressures during impact with a high temporal discretization
Ease of implementation of complex physical models

Example of projects

Under construction

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Under construction