# Water properties – Trangenstein and Grabowsky¶

This uses a model from Trangenstein to describe density dependence on temperature and pressure, while it uses a model from Grabowsky to model the water viscosity as function of the temperature.

See example below:

EOS WATER
SURFACE_DENSITY 1000.0 kg/m^3
DENSITY TRANGENSTEIN
VISCOSITY GRABOWSKI
END


Note that in the example above, the IFC67 default model is used for enthalpy, because no other model is specified.

See Trangenstein density and Grabowsky viscosity models in the theory manual. These density and viscosity models do not need to be applied together, and are compatible with other property model selections.