Description: Head observed at inlet area of the installation, corresponding to the sum of the height, pressure head and velocity head  ; Name: Total head at inlet area of the installation
Description: Determined total head at the inlet area of the installation, which corresponds to the sum of geodetic head, pressure head and velocity head; Name: Total head at inlet area of the installation
Description: comprising a fluid together with substances in solid or gaseous states, whether due to deliberate addition or a change of state caused by a change in conditions; Name: multi-phase