|  | programmer's documentation | 
|   | 
| Variables | |
| integer, save | irun | 
| alias for boundary conditions  More... | |
| integer, save | irunh | 
| alias for boundary conditions  More... | |
| double precision, save | cv0 | 
| additional property  More... | |
| double precision, save | viscv0 | 
| reference volume viscosity (noted  in the equation expressing  in the paragraph dedicated to iviscv) always useful, it is the used value, unless the user specifies the volume viscosity in the user subroutine uscfpv  More... | |
| integer, save | ippred | 
| pressure predicion by an evolution equation  More... | |
| integer, save | igrdpp | 
| indicates whether the pressure should be updated (=1) or not (=0) after the solution of the acoustic equation always usef  More... | |
| integer, save | icfgrp | 
| indicates if the boundary conditions should take into account (=1) or not (=0) the hydrostatic balance.  More... | |
| double precision, save cv0 | 
additional property
| integer, save icfgrp | 
indicates if the boundary conditions should take into account (=1) or not (=0) the hydrostatic balance.
Always useful.
In the cases where gravity is predominant, taking into account the hydrostatic pressure allows to get rid of the disturbances which may appear near the horizontal walls when the flow is little convective.
Otherwise, when icfgrp=0, the pressure condition is calculated from the solution of the unidimensional Euler equations for a perfect gas near a wall, for the variables "normal velocity", "density" and "pressure":
Case of an expansion (M <= 0):
 
Case of a schock (M > 0):
 
with  , internal Mach number calculated with the variables taken in the cell.
, internal Mach number calculated with the variables taken in the cell. 
| integer, save igrdpp | 
indicates whether the pressure should be updated (=1) or not (=0) after the solution of the acoustic equation always usef
| integer, save ippred | 
pressure predicion by an evolution equation
| integer, save irun | 
alias for boundary conditions
| integer, save irunh | 
alias for boundary conditions
 1.8.3.1
 1.8.3.1