Issues of gas dynamic characteristics modeling: a study on a centrifugal compressor model stage
In: E3S Web of Conferences, Vol 140, p 06003 (2019, 2019
Online
academicJournal
Zugriff:
The paper presents the results of CFD-calculations of a centrifugal compressor stage with a high-pressure 3D impeller and a vaneless diffuser. The stage was designed by Prof. A. M. Simonov in the Problem Laboratory of Compressor LPI according to the following design parameters: flow rate coefficient 0.080, loading factor 0.74, and the relative Mach number 0.78. Two design grids were used: 2.4 and 4.4 million cells for the sector with one blade. The entire stage was calculated with a sparser grid. Special “Stage” interface conditions are used to interface the gas-dynamic parameters at the boundary regions. The SST turbulence model was used in the calculations. The results of efficiency characteristics and work coefficient comparison showed the following: in design flow rate all three variants of the calculation overstate the loading factor by 14.3%; the calculated characteristics of polytrophic work coefficient in the staging of 360 degrees are closest to the experimental characteristics, but the absolute value is greater than 12% at a flow rate coefficient of 0.085; the maximum calculated efficiency of a stage (the circle of 360 degrees) is almost equal to the measured maximum efficiency.
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Issues of gas dynamic characteristics modeling: a study on a centrifugal compressor model stage
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Autor/in / Beteiligte Person: | Aleksey, Borovkov ; Igor, Voinov ; Yuri, Galerkin ; Aleksandr, Nikiforov ; Maksim, Nikitin ; Olga, Solovyeva ; Kirill, Kabalyk |
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Zeitschrift: | E3S Web of Conferences, Vol 140, p 06003 (2019, 2019 |
Veröffentlichung: | EDP Sciences, 2019 |
Medientyp: | academicJournal |
ISSN: | 2267-1242 (print) |
DOI: | 10.1051/e3sconf/201914006003 |
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