flow360.AutomatedFarfield

class AutomatedFarfield

Bases: _FarfieldBase

Settings for automatic farfield volume zone generation.

Example

>>> fl.AutomatedFarfield(name="Farfield", method="auto")

---

type: Literal['AutomatedFarfield'] = 'AutomatedFarfield'

name: str | None = 'Automated Farfield'

method: Literal['auto', 'quasi-3d', 'quasi-3d-periodic'] = 'auto'

• auto: The mesher will Sphere or semi-sphere will be generated based on the bounding box of the geometry.

  • Full sphere if min{Y} < 0 and max{Y} > 0.

  • +Y semi sphere if min{Y} = 0 and max{Y} > 0.

  • -Y semi sphere if min{Y} < 0 and max{Y} = 0.

• quasi-3d: Thin disk will be generated for quasi 3D cases.

  Both sides of the farfield disk will be treated as “symmetric plane”

• quasi-3d-periodic: The two sides of the quasi-3d disk will be conformal

Note: For quasi-3d, please do not group patches from both sides of the farfield disk into a single surface.

relative_size: Annotated[float, Gt(gt=0)] = 50.0

Radius of the far-field (semi)sphere/cylinder relative to the max dimension of the geometry bounding box.

Constraints:

• gt = 0

property farfield

Returns the farfield boundary surface.

property symmetry_plane: GhostSurface

Returns the symmetry plane boundary surface.

property symmetry_planes

Returns the symmetry plane boundary surface(s).

domain_type: Literal['half_body_positive_y', 'half_body_negative_y', 'full_body'] | None = None

• half_body_positive_y: Trim to a half-model by slicing with the global Y=0 plane; keep the ‘+y’ side for meshing and simulation.

• half_body_negative_y: Trim to a half-model by slicing with the global Y=0 plane; keep the ‘-y’ side for meshing and simulation.

• full_body: Keep the full body for meshing and simulation without attempting to add symmetry planes.

Warning: When using AutomatedFarfield, setting domain_type overrides the ‘auto’ symmetry plane behavior.