Physical properties

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Variables
Physical properties
Compressible module
Collaboration diagram for Physical properties:

## Variables
integer, save | icv
| additional property More...
integer, save | iviscv
| additional property: More...
integer, save | ieos
| indicates the equation of state. Only perfect gas with a constant adiabatic coefficient, ieos=1 is available, but the user can complete the subroutine cfther, which is not a user subroutine, to add new equations of state. More...

## Detailed Description

## Variable Documentation

integer, save icv

additional property

integer, save ieos

indicates the equation of state. Only perfect gas with a constant adiabatic coefficient, ieos=1 is available, but the user can complete the subroutine cfther, which is not a user subroutine, to add new equations of state.

integer, save iviscv

additional property:

- 0 indicates that the volume viscosity is constant and equal to the reference volume viscosity viscv0.
- 1 indicates that the volume viscosity is variable: its variation law must be specified in the user subroutine uscfpv.

Always useful. The volume viscosity is defined by the formula expressing the stress: