Water properties default model - IFC67

If no EOS is specified for WATER, the density, viscosity, internal energy, and enthalpy of pure H₂O are taken from the steam tables [IFC10]. With this method the properties are valid for a pressure and temperature range of \(0 < P < 1000\) bars, and \(0 < T < 800\) °C. Although very accurate, this method can make the problem more difficult to solve, and can cause some convergence problem in some cases.