initialisation
Default initialisation and restart settings for all meshes.
Reference condition used for non-dimensionalization (e.g. 'IC_1'). When the initial_conditions IC has zero velocity (e.g. a quiescent cavity), set this to a reference condition with the physical velocity/Reynolds number so the solver can non-dimensionalize correctly.
Initial conditions for the simulation: a named condition from reference_conditions, or a function of each cell's dimensional state (m, m, Pa, K, m/s), called as f(*, location, wall_distance, pressure, temperature, velocity); it returns a dict of any of 'pressure', 'temperature' and 'velocity'. Required unless restart=True.
Guidance: Choosing initialisation and reference state →Restart from a previous solution. Default is False.
Guidance: Choosing initialisation and reference state →Name of the case to restart from. Defaults to the current casename.
Mesh the restart case ran on, for an interpolated restart from a results file that has no case record beside it. A case run by this version of zCFD records its own mesh.
Guidance: Choosing initialisation and reference state →Ignore cycle history from restart file. Default is False.
Guidance: Choosing initialisation and reference state →Start from the restart case's solution interpolated onto this case's mesh, which may differ in resolution, cell type or geometry. Variables the restart case does not solve come from the initial conditions.
Guidance: Choosing initialisation and reference state →How an interpolated restart forms each new cell's value from the old cell containing its centre: 'linear' adds the old cell's least-squares gradient times the offset between the centres, held within the values of that cell and its face neighbours; 'injection' copies the old cell's value.
| Value | What it does |
|---|---|
| linear default | Linear, bounded by the neighbouring cells |
| injection | Copy the containing cell |
For an interpolated restart, the restart case's model each of this case's models starts from, where the names differ, as {this case's model: restart case's model}. Models not listed start from the model of the same name.
Largest fraction of this case's cells that may lie outside the restart case's mesh, so 0.001 is 0.1%. Those cells take the nearest restart cell's value; above the limit the run stops.