Description

The keyword $DENSITY enables the definition of a fluid density model.

Parameters

The first parameter (int) indicates the density model type.

Density Models:

1. constant_density
2. rho(p) = rho_0*(1+beta_p*(p-p_0))
3. rho(C) = rho_0*(1+beta_C*(C-C_0))
4. rho(T) = rho_0*(1+beta_T*(T-T_0))
5. rho(C,T) = rho_0*(1+beta_C*(C-C_0)+beta_T*(T-T_0))
6. rho(p,T) = rho_0*(1+beta_p*(p-p_0)+beta_T*(T-T_0))
7. rho(p,p_v,T) no input data required
8. rho(p,T,C)
9. Molar mass
10. read density from a rho-P-T table
11. Peng-Robinson Equation of State
12. Redlich-Kwong Equation of State
13. Fundamental equation
14. Extended ideal gas equation based on super compressibility factor

18. calculated node densities from the phase transition model

In Example 1, the density model is set to 1, i.e. the density is constant. The second value (double) gives the water density (10°C) in kg/m3.

Examples

1

#FLUID_PROPERTIES
 $FLUID_TYPE
 LIQUID
 $DENSITY
 1 0.9997026e+03
 $VISCOSITY
 1 1.308e-003
#STOP