functionddph_ph_dd
Second derivatives function of density
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 |
Outputs
| Type | Name | Default | Description |
|---|---|---|---|
| Real | ddph_ph | Second derivative of density by p at constant h | |
| Real | ddph_hp | Second mixed derivative of density by p and h |