Difference between revisions of "Archer"
From www.coria-cfd.fr
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=== Turbulent jet === | === Turbulent jet === | ||
| − | [[File:jet_2048.jpg| | + | <div class="infobox floatright" style="width: 280px;"> |
| + | [[File:jet_2048.jpg|right|thumb|300px|]] | ||
| + | </div> | ||
| + | |||
| − | |||
Diesel type Jet Atomization : | Diesel type Jet Atomization : | ||
Diameter: 100µm, Liquid velocity 100 ms-1, Turbulence 5%, gas velocity: 0 ms-1, | Diameter: 100µm, Liquid velocity 100 ms-1, Turbulence 5%, gas velocity: 0 ms-1, | ||
| − | <math>\rho_{liq}</math>=696 kgm-3, <math>\rho_{gas}</math>=25 kgm-3 | + | <math>\rho_{liq}</math>=696 kgm-3, <math>\rho_{gas}</math>=25 kgm-3 |
| + | |||
| + | <math>\mu_{liq}</math> =1.210-3kgm-1s-1, <math>\mu_{gas}</math>=10-5kgm-1s-1, <math>\sigma</math>=0.06Nm-1 | ||
Numerical simulation by coupling Level Set / VOF / Ghost fluid methods | Numerical simulation by coupling Level Set / VOF / Ghost fluid methods | ||
| − | |||
| + | Mesh : 256x256x2048 (130 millions points) MPI parallelization 128 procs. | ||
| + | *[[Media:Jet_Fin.avi|Jet.avi]] | ||
=== Triple disk injector === | === Triple disk injector === | ||
Revision as of 15:09, 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
=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.
Triple disk injector
Liquid/Gas mixing layer
