Solvers
Solver nodes emit the solver_settings block of a stage. A solver typically consumes model-import settings, material-import settings, a linear solver, a time-stepping scheme and (for fluids) a formulation.
Directory: public/js/nodes/solvers/
Physics solvers
| Node | Type |
|---|---|
| Structural Mechanics Solver | Solvers/Structural mechanics/Structural Mechanics Solver |
| Navier-Stokes Monolithic | Solvers/Fluid dynamics/NavierStokesSolverMonolithic |
| Navier-Stokes Fractional Step | Solvers/Fluid dynamics/NavierStokesSolverFractionalStep |
| Convection-Diffusion Solver | Solvers/Convection-diffusion/ConvectionDiffusionSolver |
| Potential Flow Solver | Solvers/Potential flow/PotentialFlowSolver |
A structural solver, for example, exposes model_import_settings, model_part_name, volume_model_part_name, skin_parts, no_skin_parts, linear_solver_settings, material_import_settings inputs and a Domain Size widget:
Linear solvers
Directory: public/js/nodes/solvers/linear_solvers/
Connect a linear solver into a physics solver's linear_solver_settings input.
Serial (Solvers/Linear Solvers/Serial/…):
| Node | Type |
|---|---|
| AMGCL | Solvers/Linear Solvers/Serial/AMGCL |
| BICGSTAB | Solvers/Linear Solvers/Serial/BICGSTAB |
| CG | Solvers/Linear Solvers/Serial/CG |
| SparseLU | Solvers/Linear Solvers/Serial/SparseLU |
MPI (Solvers/Linear Solvers/MPI/…):
| Node | Type |
|---|---|
| AMGCL (MPI) | Solvers/Linear Solvers/MPI/AMGCL |
| Amesos | Solvers/Linear Solvers/MPI/Amesos |
| Aztec | Solvers/Linear Solvers/MPI/Aztec |
| Multi-Level (ML) | Solvers/Linear Solvers/MPI/Multi-Level |
The AMGCL serial solver exposes a rich set of widgets — max iterations, GMRES Krylov space dimension, verbosity, tolerance, block size, coarsening thresholds, level counts and sweep counts.
Time stepping & formulations
| Node | Type | Purpose |
|---|---|---|
| Time Stepping | Solvers/…/time_stepping | Time-integration settings (fixed step or table-driven). |
| Monolithic formulation | Solvers/Formulations/Monolithic | Fluid monolithic formulation options. |
| Fractional Step formulation | Solvers/Formulations/FractionalStep | Fluid fractional-step formulation options. |
Components
| Node | Type | Purpose |
|---|---|---|
| Model Import Settings | Solvers/Components/ModelImportSettings | model_import_settings (input type, mesh file). |
| Material Import Settings | Solvers/Components/MaterialImportSettings | material_import_settings (materials file). |