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programmer's documentation
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Modules | |
Module for turbulence constants | |
Variables | |
double precision | tkelvi |
Temperature in Kelvin correponding to 0 degrees Celsius (= +273,15) More... | |
double precision | tkelvn |
Temperature in degrees Celsius corresponding to 0 Kelvin (= -273,15) More... | |
double precision | xcal2j |
Calories (1 cvar_al = xcal2j J) More... | |
double precision | stephn |
Stephan constant for the radiative module ![]() ![]() | |
double precision | rair |
Perfect gas constant for air (mixture) More... | |
real(c_double), pointer, save | cs_physical_constants_r |
Perfect gas constant in ![]() | |
real(c_double), pointer, save | gx |
Gravity. More... | |
real(c_double), pointer, save | gy |
real(c_double), pointer, save | gz |
integer(c_int), pointer, save | icorio |
Coriolis effects. More... | |
integer(c_int), pointer, save | ixyzp0 |
Physical constants of the fluid filling xyzp0 indicator. More... | |
integer(c_int), pointer, save | ieos |
indicates the equation of state for compressible module. Only perfect gas with a constant adiabatic coefficient, ieos=1 is available, but the user can complete the file cs_cf_thermo.h, which is not a user source, to add new equations of state. More... | |
integer(c_int), pointer, save | icp |
isobaric specific heat ![]() | |
integer(c_int), pointer, save | icv |
isochoric specific heat ![]() | |
integer(c_int), pointer, save | irovar |
variable density field ![]() | |
integer(c_int), pointer, save | ivivar |
variable viscosity field ![]() | |
integer(c_int), pointer, save | ivsuth |
Sutherland law for laminar viscosity and thermal conductivity Only useful in gas mix (igmix) specific physics. More... | |
real(c_double), pointer, save | ro0 |
reference density. Negative value: not initialized. Its value is not used in gas or coal combustion modelling (it will be calculated following the perfect gas law, with ![]() ![]() | |
real(c_double), pointer, save | viscl0 |
reference molecular dynamic viscosity. Negative value: not initialized. More... | |
real(c_double), pointer, save | p0 |
reference pressure for the total pressure. except with the compressible module, the total pressure ![]() ![]() ![]() ![]() | |
real(c_double), pointer, save | pred0 |
reference value for the reduced pressure ![]() ![]() | |
real(c_double), dimension(:), pointer, save | xyzp0 |
coordinates of the reference point ![]() | |
real(c_double), pointer, save | t0 |
reference temperature. More... | |
real(c_double), pointer, save | cp0 |
reference specific heat. More... | |
real(c_double), pointer, save | cv0 |
Reference isochoric specific heat. More... | |
real(c_double), pointer, save | psginf |
Stiffened gas (ieos=2) limit pressure (Pa) Equal to zero in perfect gas. More... | |
real(c_double), pointer, save | gammasg |
Stiffened gas (ieos=2) polytropic coefficient (dimensionless) More... | |
real(c_double), pointer, save | xmasmr |
Molar mass of the perfect gas in ![]() | |
real(c_double), pointer, save | pther |
Uniform thermodynamic pressure for the low-Mach algorithm Thermodynamic pressure for the current time step. More... | |
real(c_double), pointer, save | pthera |
Thermodynamic pressure for the previous time step. More... | |
real(c_double), pointer, save | pthermax |
pthermax: Thermodynamic maximum pressure for user clipping, used to model a venting effect More... | |
real(c_double), pointer, save cp0 |
reference specific heat.
Useful if there is 1 <= n <= nscaus, so that iscalt = n and itherm = 1 (there is a "temperature" scalar), unless the user specifies the specific heat in the user subroutine usphyv (icp > 0) with the compressible module or coal combustion, cp0 is also needed even when there is no user scalar.
real(c_double), pointer, save cs_physical_constants_r |
Perfect gas constant in .
real(c_double), pointer, save cv0 |
Reference isochoric specific heat.
Useful for the compressible module (J/kg/K)
real(c_double), pointer, save gammasg |
Stiffened gas (ieos=2) polytropic coefficient (dimensionless)
real(c_double), pointer, save gx |
Gravity.
real(c_double), pointer, save gy |
real(c_double), pointer, save gz |
integer(c_int), pointer, save icorio |
Coriolis effects.
integer(c_int), pointer, save icp |
isobaric specific heat
integer(c_int), pointer, save icv |
isochoric specific heat
integer(c_int), pointer, save ieos |
indicates the equation of state for compressible module. Only perfect gas with a constant adiabatic coefficient, ieos=1 is available, but the user can complete the file cs_cf_thermo.h, which is not a user source, to add new equations of state.
integer(c_int), pointer, save irovar |
variable density field :
integer(c_int), pointer, save ivivar |
variable viscosity field :
integer(c_int), pointer, save ivsuth |
Sutherland law for laminar viscosity and thermal conductivity Only useful in gas mix (igmix) specific physics.
integer(c_int), pointer, save ixyzp0 |
Physical constants of the fluid filling xyzp0 indicator.
real(c_double), pointer, save p0 |
real(c_double), pointer, save pred0 |
reference value for the reduced pressure (see ro0). It is especially used to initialise the reduced pressure and as a reference value for the outlet boundary conditions. For an optimised precision in the resolution of
, it is wiser to keep pred0 to 0. With the compressible module, the "pressure" variable appearing in the equations directly represents the total pressure. It is therefore initialized to p0 and not pred0 (see ro0). Always useful, except with the compressible module
real(c_double), pointer, save psginf |
Stiffened gas (ieos=2) limit pressure (Pa) Equal to zero in perfect gas.
real(c_double), pointer, save pther |
Uniform thermodynamic pressure for the low-Mach algorithm Thermodynamic pressure for the current time step.
real(c_double), pointer, save pthera |
Thermodynamic pressure for the previous time step.
real(c_double), pointer, save pthermax |
pthermax: Thermodynamic maximum pressure for user clipping, used to model a venting effect
double precision rair |
Perfect gas constant for air (mixture)
real(c_double), pointer, save ro0 |
reference density. Negative value: not initialized. Its value is not used in gas or coal combustion modelling (it will be calculated following the perfect gas law, with and
). With the compressible module, it is also not used by the code, but it may be (and often is) referenced by the user in user subroutines; it is therefore better to specify its value.
Always useful otherwise, even if a law defining the density is given by the user subroutines usphyv or uselph. indeed, except with the compressible module, CS does not use the total pressure when solving the Navier-Stokes equation, but a reduced pressure .
. where
is a reference point (see xyzp0) and
and
are reference values (see pred0 and p0). Hence, the term
in the equation is treated as
. The closer ro0 is to the value of
, the more
will tend to represent only the dynamic part of the pressure and the faster and more precise its solution will be. Whatever the value of ro0, both
and
appear in the listing and the post-processing outputs.. with the compressible module, the calculation is made directly on the total pressure
double precision stephn |
Stephan constant for the radiative module in
.
real(c_double), pointer, save t0 |
reference temperature.
Useful for the specific physics gas or coal combustion (initialization of the density), for the electricity modules to initialize the domain temperature and for the compressible module (initializations). It must be given in Kelvin.
double precision tkelvi |
Temperature in Kelvin correponding to 0 degrees Celsius (= +273,15)
double precision tkelvn |
Temperature in degrees Celsius corresponding to 0 Kelvin (= -273,15)
real(c_double), pointer, save viscl0 |
reference molecular dynamic viscosity. Negative value: not initialized.
Always useful, it is the used value unless the user specifies the viscosity in the subroutine usphyv
double precision xcal2j |
Calories (1 cvar_al = xcal2j J)
real(c_double), pointer, save xmasmr |
Molar mass of the perfect gas in (if ieos=1)
Always useful
real(c_double), dimension(:), pointer, save xyzp0 |
coordinates of the reference point for the total pressure.
Always useful, except with the compressible module.