A twin-screw rotor profile design and computational fluid dynamic simulation method. (November 2015)

• Record Type: Journal Article
• Authors: He, X.; Pan, C.; Wu, M.; Ji, X.; Zhang, R.
• Is Part Of: Materials research innovations. Volume 19(2015)Supplement 8
• Page Start: S8-721
• Page End: S8-726
• Publication Date: 2015-11
• Subjects: Computational fluid dynamics -- Freeform curves -- Design -- Rotor profile; Materials -- Research -- Periodicals; Matériaux -- Recherche -- Périodiques; 620.1105
• DOI: 10.1179/1432891715Z.0000000001879
• Languages: English
• ISSNs: 1432-8917

Abstract

Abstract : There are increasing demands for more efficient screw compressor design method which could overcome the problems of rotor profile modification and compressor performance test establishment. As a result, non-uniform rational B-spline curves and computational fluid dynamics theory were introduced as a new method of twin-screw compressor rotor profile design. In this paper, unilateral asymmetric combined cycloid with pin gear arc rotor profile was put as the research object to develop a new rotor profile. Non-uniform rational B-spline curves, which are easy to be modified, are applied to the new rotor profile design. The twin-screw compressor flow field simulation models of both the new and the original one are created. The pressure and velocity distribution law of the twin-screw compressor under the operating speed are explored with the FLUENT software. The simulation results provide the basis for further optimisation of the new rotor profile design.