9.0
general documentation
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Module for definition of general parameters

Variables

integer nscamx
 maximum number of scalars solutions of an advection equation, apart from the variables of the turbulence model $ (k, \varepsilon, R_{ij}, \omega, \varphi, \overline{f}, \alpha, \nu_t$) , that is to say the temperature and other scalars (passive or not, user-defined or not)
integer nvarmx
 maximal number of variables = nscamx + 12 (u,v,w,P,Rij,e,alp)
integer iindef
 pointer for undefined type face (non-standard case)
integer ientre
 if itypfb=ientre: inlet face.
integer isolib
 if itypfb=isolib: free outlet face (or more precisely free inlet/outlet with forced pressure)
integer isymet
 if itypfb=isymet: symmetry face (or wall without friction).
integer iparoi
 if itypfb=iparoi: smooth solid wall face, impermeable and with friction.
integer iparug
 if itypfb=iparug: rough solid wall face, impermeable and with friction.
integer iesicf
 if itypfb=iesicf: imposed inlet/outlet for compressible flow (for example, supersonic inlet).
integer isspcf
 if itypfb=isspcf: supersonic outlet for compressible flow.
integer isopcf
 if itypfb=isopcf: mixed outlet for compressible flow with a given pressure.
integer iephcf
 if itypfb=iephcf: mixed inlet for compressible flow with given total pressure and total enthalpy (reservoir boundary conditions).
integer ieqhcf
integer icscpl
 code/code coupling condition
integer icscpd
 code/code coupling condition with decentered flux
integer ifrent
 if itypfb=ifrent: free entrance based on Bernoulli equation when the flow is incoming, standard outlet when outgoing
integer ifresf
 if itypfb=ifresf: free surface for mobile mesh boundary condition
integer i_convective_inlet
 if itypfb=i_convective_inlet: inlet face where the total mass flux is prescribed.
integer ibfixe
 boundary condition type for mesh velocity in ALE: fixed wall
integer igliss
 boundary condition type for mesh velocity in ALE: sliding wall
integer ivimpo
 boundary condition type for mesh velocity in ALE: imposed velocity.
integer ibalfs
 Boundary condition type for mesh velocity in ALE for modelling free surface ( $ \vect{u} \cdot \vect{S} = \vect{w} \cdot \vect{S} $).
integer nstrmx
 maximum number of structures in ALE

Detailed Description

Variable Documentation

◆ i_convective_inlet

integer i_convective_inlet

if itypfb=i_convective_inlet: inlet face where the total mass flux is prescribed.

  • Zero-flux condition for pressure and Dirichlet condition for all other variables. The value of the Dirichlet must be given in rcodcl(ifac,ivar,1) for every value of ivar, except for ivar = ipr. The other values of rcodcl and icodcl are filled automatically. The diffusive flux is CANCELLED (therefore the total mass flux is due to convection only).

◆ ibalfs

integer ibalfs

Boundary condition type for mesh velocity in ALE for modelling free surface ( $ \vect{u} \cdot \vect{S} = \vect{w} \cdot \vect{S} $).

◆ ibfixe

integer ibfixe

boundary condition type for mesh velocity in ALE: fixed wall

◆ icscpd

integer icscpd

code/code coupling condition with decentered flux

◆ icscpl

integer icscpl

code/code coupling condition

◆ ientre

integer ientre

if itypfb=ientre: inlet face.

  • Zero-flux condition for pressure and Dirichlet condition for all other variables. The value of the Dirichlet must be given in rcodcl(ifac,ivar,1) for every value of ivar, except for ivar = ipr. The other values of rcodcl and icodcl are filled automatically.

◆ iephcf

integer iephcf

if itypfb=iephcf: mixed inlet for compressible flow with given total pressure and total enthalpy (reservoir boundary conditions).

  • Boundary values are obtained by solving a Riemann problem between an inner (values at boundary cells center) and an outer state.
  • Homogeneous Neumann boundary condition for the pressure (seen by the reconstruction gradients and the diffusion operator).
  • Dirichlet (icodcl=1) for velocity and total energy.
  • Analytical boundary convective fluxes of momentum and total energy are computed. Note that the pressure boundary value is needed to compute those two fluxes (seen by the pressure gradient of the momentum equation).
    • If the mass flow is coming in, Dirichlet condition for the scalars and the turbulent quantities is used (or zero-flux condition if no Dirichlet value has been specified).
  • If the mass flow is going out, zero-flux condition are set for the scalars and the turbulent quantities.

◆ ieqhcf

integer ieqhcf

◆ iesicf

integer iesicf

if itypfb=iesicf: imposed inlet/outlet for compressible flow (for example, supersonic inlet).

  • A boundary value has to be given for the following quantities:
    • velocity
    • two of the four thermodynamical properties: density, pressure, total energy, temperature
    • all other variables.
  • Homogeneous Neumann boundary condition for the pressure (seen by the reconstruction gradients and the diffusion operator).
  • Dirichlet condition for the velocity and the total energy.
  • The boundary convective fluxes of momentum and total energy are computed from a Rusanov scheme for stability reasons. Note that the pressure boundary value is needed to compute those two fluxes (seen by the pressure gradient of the momentum equation).
  • If the mass flow is coming in, Dirichlet condition for the scalars and the turbulent quantities is used (or zero-flux condition if no Dirichlet value has been specified).
  • If the mass flow is going out, zero-flux condition are set for the scalars and the turbulent quantities.

◆ ifrent

integer ifrent

if itypfb=ifrent: free entrance based on Bernoulli equation when the flow is incoming, standard outlet when outgoing

◆ ifresf

integer ifresf

if itypfb=ifresf: free surface for mobile mesh boundary condition

  • Homogeneous Neumann boundary condition for velocity and total energy (seen by the reconstruction gradients and the diffusion operator).
  • Dirichlet (icodcl=1) for the pressure.

◆ igliss

integer igliss

boundary condition type for mesh velocity in ALE: sliding wall

◆ iindef

integer iindef

pointer for undefined type face (non-standard case)

◆ iparoi

integer iparoi

if itypfb=iparoi: smooth solid wall face, impermeable and with friction.

◆ iparug

integer iparug

if itypfb=iparug: rough solid wall face, impermeable and with friction.

◆ isolib

integer isolib

if itypfb=isolib: free outlet face (or more precisely free inlet/outlet with forced pressure)

  • The pressure is always treated with a Dirichlet condition, calculated with the constraint $\displaystyle \frac{\partial }{\partial n}\left(\frac{ \partial P}{\partial \tau}\right)=0$. The pressure is set to $P_0$ at the first isolib face met. The pressure calibration is always done on a single face, even if there are several outlets.
  • if the mass flow is coming in, the velocity is set to zero and a Dirichlet condition for the scalars and the turbulent quantities is used (or zero-flux condition if no Dirichlet value has been specified).
  • if the mass flow is going out, zero-flux condition are set for the velocity, the scalars and the turbulent quantities.
  • Nothing is written in icodcl or rcodcl for the pressure or the velocity. An optional Dirichlet condition can be specified for the scalars and turbulent quantities.
    Remarks
    A standard isolib outlet face amounts to a Dirichlet condition (icodcl=1) for the pressure, a zero Dirichlet condition if the mass flux is entering (or a homogeneous Neumann if outgoing) for the velocity, and a Dirichlet condition (icodcl=1) if the user has specified a Dirichlet value or a zero-flux condition (icodcl=3) for the other variables.

◆ isopcf

integer isopcf

if itypfb=isopcf: mixed outlet for compressible flow with a given pressure.

  • Boundary values are obtained by solving a Riemann problem between an inner (values at boundary cells center) and an outer state. The given pressure is considered as an outer value.
  • Homogeneous Neumann boundary condition for the pressure (seen by the reconstruction gradients and the diffusion operator).
  • Dirichlet (icodcl=1) for the velocity and the total energy.
  • Analytical boundary convective fluxes of momentum and total energy are computed. Note that the pressure boundary value is needed to compute those two fluxes. (seen by the pressure gradient of the momentum equation).
  • If the mass flow is coming in, Dirichlet condition for the scalars and the turbulent quantities is used (or zero-flux condition if no Dirichlet value has been specified).
  • If the mass flow is going out, zero-flux condition are set for the scalars and the turbulent quantities.

◆ isspcf

integer isspcf

if itypfb=isspcf: supersonic outlet for compressible flow.

  • Nothing needs to be given. The imposed state at the boundary is the upstream state (values in boundary cells).
  • Homogeneous Neumann boundary condition for the pressure (seen by the reconstruction gradients and the diffusion operator).
  • Dirichlet (icodcl=1) for the velocity and the total energy. (pressure boundary value seen by the pressure gradient of the momentum equation).
  • If the mass flow is coming in, Dirichlet condition for the scalars and the turbulent quantities is used (or zero-flux condition if no Dirichlet value has been specified).
  • If the mass flow is going out, zero-flux condition are set for the scalars and the turbulent quantities.

◆ isymet

integer isymet

if itypfb=isymet: symmetry face (or wall without friction).

  • Nothing to be writen in icodcl and rcodcl.

◆ ivimpo

integer ivimpo

boundary condition type for mesh velocity in ALE: imposed velocity.

  • In the case where all the nodes of a face have a imposed displacement, it is not necessary to fill the tables with boundary conditions mesh velocity for this face, they will be erased. In the other case, the value of the Dirichlet must be given in rcodcl(ifac,ivar,1) for every value of ivar (iuma, ivma and iwma). The other boxes of rcodcl and icodcl are completed automatically. The tangential mesh velocity is taken like a tape speed under the boundary conditions of wall for the fluid, except if wall fluid velocity was specified by the user in the interface or cs_user_boundary_conditions (in which case it is this speed which is considered).

◆ nscamx

integer nscamx

maximum number of scalars solutions of an advection equation, apart from the variables of the turbulence model $ (k, \varepsilon, R_{ij}, \omega, \varphi, \overline{f}, \alpha, \nu_t$) , that is to say the temperature and other scalars (passive or not, user-defined or not)

◆ nstrmx

integer nstrmx

maximum number of structures in ALE

◆ nvarmx

integer nvarmx

maximal number of variables = nscamx + 12 (u,v,w,P,Rij,e,alp)