flow360.AdaptiveCFL

class AdaptiveCFL

Bases: Flow360BaseModel

AdaptiveCFL class for Adaptive CFL setting of time stepping.

Example

>>> fl.AdaptiveCFL(
...     min=1,
...     max=100000,
...     max_relative_change=50
... )

---

type: Literal['adaptive'] = 'adaptive'

min: Annotated[float, Gt(gt=0)] = 0.1

The minimum allowable value for Adaptive CFL.

Constraints:

• gt = 0

max: Annotated[float, Gt(gt=0)] | None = None

The maximum allowable value for Adaptive CFL.

max_relative_change: Annotated[float, Gt(gt=0)] | None = None

The maximum allowable relative change of CFL (%) at each pseudo step. In unsteady simulations, the value of AdaptiveCFL.max_relative_change is updated automatically depending on how well the solver converges in each physical step.

convergence_limiting_factor: Annotated[float, Gt(gt=0)] | None = None

This factor specifies the level of conservativeness when using Adaptive CFL. Smaller values correspond to a more conservative limitation on the value of CFL.

classmethod default_unsteady()

returns default unsteady Adaptive CFL settings

classmethod default_steady()

returns default steady Adaptive CFL settings