config

Definitions of boundary/domain conditions for a scalar transport equation.

class FarField(fields: transportfields | None = None)

Farfield condition for a scalar transport equation.

The farfield condition imposes the value $phi_{infty}$ at the prescribed boundaries. This imposes the value, by taking a look at the characteristics which determine if this is an inlet or an outlet. Additionally, this also is imposed via the viscous fluxes, if diffusion is included as well.

Note:

See add_farfield_formulation for the implementation of the farfield condition in the HDG formulation. Similarly, add_farfield_formulation for a standard DG formulation.

class transportfields(other: ngsdict = None, **kwargs)

Mutable mapping for flow quantities.

Literal mathematical symbols as key names are converted to their respective quantities, if predefined. Values are converted to NGSolve CoefficientFunctions.

>>> fields = transportfields(phi=1.0)
>>> fields
{'phi': CoefficientFunction((1.0))}

phi

phi \(\phi\)