recordHelmholtzDerivs
dimensionless Helmholtz energy and its derivatives
Extends from Modelica.Icons.Record (Icon for records).
Components
| Type | Name | Default | Description |
|---|---|---|---|
| MolarMass | MM | fluidConstants[1].molarMass | |
| SpecificHeatCapacity | R_s | Modelica.Constants.R/MM | specific gas constant |
| Density | d_crit | MM/fluidConstants[1].criticalMolarVolume | |
| Temperature | T_crit | fluidConstants[1].criticalTemperature | |
| Density | d | ||
| Real | delta | reduced density | |
| Temperature | T | ||
| Real | tau | inverse reduced temperature | |
| Real | i | f_i | |
| Real | it | (df_i/dtau)@delta=const | |
| Real | itt | (d2f_i/dtau2)@delta=const | |
| Real | ittt | (d3f_i/dtau3)@delta=const | |
| Real | r | f_r | |
| Real | rd | (df_r/ddelta)@tau=const | |
| Real | rdd | (d2f_r/ddelta2)@tau=const | |
| Real | rt | (df_r/dtau)@delta=const | |
| Real | rtt | (d2f_r/dtau2)@delta=const | |
| Real | rtd | (d2f_r/dtau ddelta) | |
| Real | rttt | (d3f_r/dtau3)@delta=const | |
| Real | rttd | (d3f_r/dtau2 ddelta) | |
| Real | rtdd | (d3f_r/dtau ddelta2) | |
| Real | rddd | (d3f_r/ddelta3)@tau=const |