Functions/Subroutines
subroutine	physical_constants_init
	Initialize Fortran physical constants API. This maps Fortran pointers to global C structure members.
subroutine	fluid_properties_init
	Initialize Fortran fluid properties API. This maps Fortran pointers to global C structure members.
subroutine	turb_reference_values_init
	Initialize Fortran RANS turbulence model API. This maps Fortran pointers to global C structure members.
subroutine	turb_model_constants_init
	Initialize Fortran turbulence model constants. This maps Fortran pointers to global C real numbers.

Variables
double precision	tkelvi
	Temperature in Kelvin correponding to 0 degrees Celsius (= +273,15)
double precision	xcal2j
	Calories (1 cvar_al = xcal2j J)
double precision	stephn
	Stephan constant for the radiative module $\sigma$ in $W.m^{-2}.K^{-4}$ .
real(c_double), pointer, save	rair
	Perfect gas constant for air (mixture)
real(c_double), pointer, save	rvapor
	Moist air gas constant (mixture)
real(c_double), pointer, save	rvsra
	ratio gas constant h2o/ dry air
real(c_double), pointer, save	clatev
	latent heat of evaporation
double precision	kboltz
	Boltzmann constant ( $J.K^{-1}$ )
double precision	cs_physical_constants_r
	Ideal gas constant ( $J.mol^{-1}.K^{-1}$ )
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	ixyzp0
	Physical constants of the fluid filling xyzp0 indicator.
integer(c_int), pointer, save	icp
	indicates if the isobaric specific heat is variable:
integer(c_int), pointer, save	icv
	isochoric specific heat
integer(c_int), pointer, save	irovar
	variable density field $\rho$ :
integer(c_int), pointer, save	ivivar
	variable viscosity field $\mu$ :
integer(c_int), pointer, save	ivsuth
	Sutherland law for laminar viscosity and thermal conductivity Only useful in gas mix (igmix) specific physics.
real(c_double), pointer, save	ro0
	reference density.
real(c_double), pointer, save	viscl0
	reference molecular dynamic viscosity.
real(c_double), pointer, save	p0
	reference pressure for the total pressure.
real(c_double), pointer, save	pred0
	reference value for the reduced pressure (see ro0).
real(c_double), dimension(:), pointer, save	xyzp0
	coordinates of the reference point $\vect{x}_0$ for the total pressure.
real(c_double), pointer, save	t0
	reference temperature.
double precision, save	eint0
	Reference internal energy for the barotropic compressible module.
real(c_double), pointer, save	cp0
	reference specific heat.
real(c_double), pointer, save	cv0
	Reference isochoric specific heat.
real(c_double), pointer, save	cpv0
	Reference isobaric specific heat for water vapor.
real(c_double), pointer, save	l00
	Latent heat.
real(c_double), pointer, save	cvl
	Reference specific heat for liquid water.
real(c_double), pointer, save	lambda0
	Reference thermal conductivity.
real(c_double), pointer, save	xmasmr
	Molar mass of the perfect gas in (if ieos=1)
integer(c_int), pointer, save	ipthrm
	Uniform variable thermodynamic pressure for the low-Mach algorithm.
real(c_double), pointer, save	pther
	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
real(c_double), pointer, save	sleak
	Leak surface.
real(c_double), pointer, save	kleak
	Leak head loss (2.9 by default, from Idelcick)
real(c_double), pointer, save	roref
	Initial reference density.
double precision, save	xkappa = 0.42d0
	$\kappa$ Karman constant. (= 0.42) Useful if and only if iturb >= 10. (mixing length, $k-\varepsilon$ , $R_{ij}-\varepsilon$ , LES, v2f or $k-\omega$ )
real(c_double), pointer, save	ypluli
	limit value of for the viscous sublayer. ypluli depends on the chosen wall function: it is initialized to 10.88 for the scalable wall function (iwallf=4), otherwise it is initialized to $1/\kappa\approx 2,38$ . In LES, ypluli is taken by default to be 10.88.
real(c_double), pointer, save	cmu
	constant $C_\mu$ for all the RANS turbulence models Warning, different values for the v2f model Useful if and only if iturb = 20, 21, 30, 31, 50, 51 or 60 ( $k-\varepsilon$ , $R_{ij}-\varepsilon$ or $k-\omega$ )
real(c_double), pointer, save	csrij
	Coefficient of interfacial coefficient in k-eps, used in Lagrange treatment.
double precision, save	xcl = 0.122d0
	constant of the Rij-epsilon EBRSM
double precision, save	xa1 = 0.1d0
	constant in the expression of Ce1' for the Rij-epsilon EBRSM
double precision, save	xct = 6.d0
	constant of the Rij-epsilon EBRSM
real(c_double), pointer, save	almax
	is a characteristic macroscopic length of the domain, used for the initialization of the turbulence and the potential clipping (with iclkep=1)
real(c_double), pointer, save	uref
	the characteristic flow velocity, used for the initialization of the turbulence. Negative value: not initialized.
real(c_double), pointer, save	xlesfl
	constant used in the definition of LES filtering diameter: $\delta = \text{xlesfl} . (\text{ales} . volume)^{\text{bles}}$ xlesfl is a constant used to define, for each cell $\omega_i$ , the width of the (implicit) filter: $\overline{\Delta}=xlesfl(ales*\|\Omega_i\|)^{bles}$ Useful if and only if iturb = 40 or 41
real(c_double), pointer, save	ales
	constant used to define, for each cell , the width of the (implicit) filter:
real(c_double), pointer, save	bles
	constant used to define, for each cell ,
real(c_double), pointer, save	csmago
	Smagorinsky constant used in the Smagorinsky model for LES. The sub-grid scale viscosity is calculated by $\displaystyle\mu_{sg}= \rho C_{smago}^2\bar{\Delta}^2\sqrt{2\bar{S}_{ij}\bar{S}_{ij}}$ where $\bar{\Delta}$ is the width of the filter and $\bar{S}_{ij}$ the filtered strain rate.
real(c_double), pointer, save	xlesfd
	ratio between explicit and explicit filter width for a dynamic model constant used to define, for each cell $\Omega_i$ , the width of the explicit filter used in the framework of the LES dynamic model: $\widetilde{\overline{\Delta}}=xlesfd\overline{\Delta}$ .
real(c_double), pointer, save	cdries
	van Driest constant appearing in the van Driest damping function applied to the Smagorinsky constant:
double precision, save	volmin
	minimal control volume
double precision, save	volmax
	maximal control volume
double precision, save	voltot
	total domain volume
real(c_double), pointer, save	xclt
	constant of EB-AFM and EB-DFM