NavierStokesInitialCondition

class NavierStokesInitialCondition

Bases: ExpressionInitialConditionBase

NavierStokesInitialCondition class for specifying the Fluid.initial_condition.

Note

The result of the expressions will be treated as non-dimensional values. Please refer to the Units Introduction for more details.

Example

>>> fl.NavierStokesInitialCondition(
...     rho = "(x <= 0) ? (1.0) : (0.125)",
...     u = "0",
...     v = "0",
...     w = "0",
...     p = "(x <= 0) ? (1 / 1.4) : (0.1 / 1.4)"
... )

---

Attributes

constants: dict[str, typing.Annotated[str, AfterValidator(func=<function process_expressions at 0x7bbe26477a30>)]] | None

The expression for the initial condition.

Default:

None

rho: str

Density

Default:

'rho'

u: str

X-direction velocity

Default:

'u'

v: str

Y-direction velocity

Default:

'v'

w: str

Z-direction velocity

Default:

'w'

p: str

Pressure

Default:

'p'

Additional Constructors

classmethod from_file(filename)

Load a Flow360BaseModel from a .json file.

Parameters:

filename (str)

Return type:

Flow360BaseModel

Methods

help(methods=False)

Print fields and methods of a Flow360BaseModel using rich.

Parameters:

methods (bool)

Return type:

None

to_file(filename, **kwargs)

Export Flow360BaseModel instance to a .json file.

Parameters:

• filename (str)

• kwargs (Any)

Return type:

None