Dynamic Effects of Pressure Loads in Three Screw Pump Rotors

[+] Author and Article Information
G. C. Mimmi, P. E. Pennacchi

Dipartimento di Meccanica Strutturale, Università degli studi di Pavia, Via Ferrata 1, I-27100 Pavia, Italy

J. Mech. Des 120(4), 589-592 (Dec 01, 1998) (4 pages) doi:10.1115/1.2829319 History: Received December 01, 1997; Revised August 01, 1998; Online December 11, 2007


In a previous paper the authors have dealt with the calculation of the pressure loads on the rotors of a three screw pump. The pressure loads can be modelled as a force and a moment. In particular, starting from the knowledge of rotor geometry, the loads can be calculated and subdivided into their components along the screw axes. In this paper the simulation results obtained by using the proposed model are presented. The results show that the satellite screws are thrust towards the case in a specified direction. This fact can be verified in practice, since the cases actually present a wear zone in a particular position.

Copyright © 1998 by The American Society of Mechanical Engineers
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