functionrho_ph_dd
Second order derivative function of rho_ph
Extends from Modelica.Icons.Function (Icon for functions).
Information
## Copyright © EDF 2002 - 2025 ## ThermoSysPro Version 4.2
Inputs
| Type | Name | Default | Description |
|---|---|---|---|
| Units.SI.Pressure | p | pressure | |
| Units.SI.SpecificEnthalpy | h | specific enthalpy | |
| ThermoSysPro.Properties.WaterSteam.Common.IF97TwoPhaseAnalytic | aux | auxiliary record | |
| Real | p_d | derivative of pressure | |
| Real | h_d | derivative of specific enthalpy | |
| Real | p_dd | second derivative of pressure | |
| Real | h_dd | second derivative of specific enthalpy |
Outputs
| Type | Name | Default | Description |
|---|---|---|---|
| Real | rho_dd | Second derivative of density |