The sealing line is a major leakage path affecting various performances of twin-rotor fluid
machines (TRFMs). The rotor profile generation methods using a sealing line proposed
previously are improvable further. A key factor, inter-lobe clearance, can be considered at
the initial design stage of rotor profile; and a more universal model suitable for opened and
closed sealing lines can be studied further to generate varied rotor profiles for different
applications. Therefore, this study proposes a parameterized sealing line (PSL) with …