neumann

Inherits from: condlim_base

Neumann condition at the boundary called bord (edge) : 1). For Navier-Stokes equations, constraint imposed at the boundary; 2). For scalar transport equation, flux imposed at the boundary.

frontiere_ouverte_gradient_pression_libre_vef

Inherits from: neumann

Class for outlet boundary condition in VEF like Orlansky. There is no reference for pressure for theses boundary conditions so it is better to add pressure condition (with Frontiere_ouverte_pression_imposee) on one or two cells (for symmetry in a channel) of the boundary where Orlansky conditions are imposed.

frontiere_ouverte_gradient_pression_libre_vefprep1b

Inherits from: neumann

Class for outlet boundary condition in VEF P1B/P1NC like Orlansky.

frontiere_ouverte_pression_imposee

Inherits from: neumann

Imposed pressure condition at the open boundary called bord (edge). The imposed pressure field is expressed in Pa.

Parameters:

ch (type: front_field_base) Boundary field type.

frontiere_ouverte_pression_imposee_orlansky

Inherits from: neumann

This boundary condition may only be used with VDF discretization. There is no reference for pressure for this boundary condition so it is better to add pressure condition (with Frontiere_ouverte_pression_imposee) on one or two cells (for symetry in a channel) of the boundary where Orlansky conditions are imposed.

frontiere_ouverte_pression_moyenne_imposee

Inherits from: neumann

Class for open boundary with pressure mean level imposed.

Parameters:

pext (type: float) Mean pressure.

sortie_libre_temperature_imposee_h

Inherits from: neumann

Open boundary for heat equation with enthalpy as unknown.

Parameters:

ch (type: front_field_base) Boundary field type.