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Journal of Applied Mathematics
Volume 2015 (2015), Article ID 682469, 7 pages
Research Article

Simulation and Modeling of Flow in a Gas Compressor

1Centre of Computational Engineering and Integrated Design (CEID), Lappeenranta University of Technology, 53850 Lappeenranta, Finland
2Laboratory of Applied Mathematics and Mechanics, Saint Petersburg State Polytechnical University, Saint Petersburg 195251, Russia
3Lappeenranta University of Technology, 53850 Lappeenranta, Finland

Received 22 October 2014; Revised 16 December 2014; Accepted 24 December 2014

Academic Editor: Guan H. Yeoh

Copyright © 2015 Anna Avramenko et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The presented research demonstrates the results of a series of numerical simulations of gas flow through a single-stage centrifugal compressor with a vaneless diffuser. Numerical results were validated with experiments consisting of eight regimes with different mass flow rates. The steady-state and unsteady simulations were done in ANSYS FLUENT 13.0 and NUMECA FINE/TURBO 8.9.1 for one-period geometry due to periodicity of the problem. First-order discretization is insufficient due to strong dissipation effects. Results obtained with second-order discretization agree with the experiments for the steady-state case in the region of high mass flow rates. In the area of low mass flow rates, nonstationary effects significantly influence the flow leading stationary model to poor prediction. Therefore, the unsteady simulations were performed in the region of low mass flow rates. Results of calculation were compared with experimental data. The numerical simulation method in this paper can be used to predict compressor performance.