Numerical Modeling of the Flow in a Vaneless Diffuser of Centrifugal Compressor Stage. (24th September 2013)

• Record Type: Journal Article
• Authors: Kalinkevych, Mykola; Shcherbakov, Oleg
• Other Names: Chen W.-H. Academic Editor.; Juncu G. Academic Editor.
• Is Part Of: ISRN mechanical engineering. Volume 2013(2013)
• Publication Date: 2013-09-24
• Subjects: Mechanical engineering -- Periodicals; Mechanical engineering; Periodicals; Electronic journals; 621
• DOI: 10.1155/2013/602384
• Languages: English
• ISSNs: 2090-5122

Abstract

Abstract : This paper presents the results of numerical investigation of the flow in a vaneless diffuser of centrifugal compressor stage. Simulations were performed using both a commercial CFD package ANSYS CFX and the own-designed computer program. Steady conditions involving SST turbulence model were used for the calculations using CFX. To consider the interaction between impeller and diffuser, not just a diffuser but the whole stage was calculated. The own-designed methodology is based on solving of conservation equations with assumptions that flow in a diffuser is steady state and axisymmetric. The flow area is divided into the flow core and boundary layers. Results of calculation were compared with experimental data.