ANALYZING CIRCULAR ROTOR PROFILE’S EFFECTS TO PERFRORMANCE OF LOBE PUMP

Abstract

The paper is mainly focused on analysis characteristics of lobe pump with
circular rotor profile. Based on the geometric analysis and mathematical
circular model, the tooth profile is generated with six different distance ratio
(e). The results shows that distance ratio affects significantly to the shape of
tooth profile and pump performance. The output pressure and velociy increase
when the distance ratio increases. Distance ratio between 0.9 and 0.95
provides a much advantage than each others. The study also illustrates that
three lobe rotor does not increase pump performance but it provides a more
stable flow than two lobe rotor.