momentum
Momentum source fluid zone.
Mesh cell zone numbers whose cells form the source region, for example "cell zones": [4]; give this, 'definition', or neither for the whole mesh
Guidance: Choosing a fluid-zone model →Closed-surface VTP file selecting the source region cells; without it or 'cell zones' the source applies to the whole mesh
Guidance: Choosing a fluid-zone model →Source kind
| Value | What it does | When to use it |
|---|---|---|
| fixed default | Labels the source as constant; the solver evaluates | The default; every kind gives the same result. |
| ramp | Labels the source as ramped, but the solver does not read | No effect; leave the default. |
| func | Labels the source as function-driven, but the solver does not read | No effect; leave the default. |
Update frequency
Function of the cell centres giving the source, in the units of 'source', in every cell of the source, called as f(*, locations); it returns a list of one source vector of three numbers per location
Guidance: Python functions in the deck →Momentum source vector