WOLFRAM SYSTEM MODELER
    v3b_phRegion 3 b: inverse function v(p,h)  | 
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SystemModel["Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.v3b_ph"]

This information is part of the Modelica Standard Library maintained by the Modelica Association.
Equation number 5 from:
| p | 
         Type: Pressure (Pa) Description: Pressure  | 
    
|---|---|
| h | 
         Type: SpecificEnthalpy (J/kg) Description: Specific enthalpy  | 
    
| v | 
         Type: SpecificVolume (m³/kg) Description: Specific volume  | 
    
|---|