Difference between revisions of "Archer"
From www.coria-cfd.fr
Line 81: | Line 81: | ||
[[File:jet_2048.jpg|400px]] | [[File:jet_2048.jpg|400px]] | ||
− | [[Media:Jet_Fin.avi | + | [[Media:Jet_Fin.avi]] |
Diesel type Jet Atomization : | Diesel type Jet Atomization : |
Revision as of 11:09, 7 September 2012
Contents
OBJECTIVE: Liquid/Gaz Interface Simulations
Describe the interface motion precisely | Level Set Method |
---|
Handle jump conditions at the interface | without artificial smoothing | Ghost Fluid Method |
---|
Respect mass conservation | VOF Method |
---|
Solve incompressible Navier Stokes equations | Projection Method |
---|
Archer is a 3D incompressible Navier Stokes solver with Level Set-Ghost Fluid-VOF coupling and MPI parallelization
NUMERICS
- Cartesian mesh
- Mac grid (velocities on cell boundaries)
- WENO 5 scheme for convective terms, Adams Bashforth or RK3 or split algorithm in time
- Multigrid algorith for preconditionning Conjugate Gradient Method in Poisson equation solver
- Ghost Fluid method for variable discontinuities at the interface
- CLSVOF for mass conservation
- MPI parallelization
UNDER DEVELOPMENT
- Immersed boundaries
- Adaptive mesh refinement
- Coupling with Lagrangian solver
GALLERY
Turbulent jet
Diesel type Jet Atomization : Diameter: 100µm, Liquid velocity 100 ms-1, Turbulence 5%, gas velocity: 0 ms-1, =696 kgm-3, =25 kgm-3,h =1.210-3kgm-1s-1, =10-5kgm-1s-1, =0.06Nm-1 Numerical simulation by coupling Level Set / VOF / Ghost fluid methods Mesh : 256x256x2048 (130 millions points) MPI parallelization 128 procs.