The application of modern Computational Fluid Dynamics techniques for increasing the efficiency and stability of an axial compressor in an industrial gas turbine

Sedunin, Viacheslav A.; Komarov, O. V.; Блинов, В. Л.; Skorokhodov, Alexander Vladimirovich; Procopets, A. O.

doi:10.2495/eq140671

Cited by 3 publications

(3 citation statements)

References 4 publications

(4 reference statements)

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“…Previous experience [1], [7] has shown too optimistic prediction of a mass flow comparing to the real compressor. This was explained by miss-prediction of the size of separation zones at the end-walls.…”

Section: Cfd Calculations and Analysismentioning

confidence: 99%

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Redesign of an Axial Compressor With Mass Flow Reduction of 30%

Sedunin¹,

Komarov²,

Blinov³

et al. 2018

WIT Transactions on Ecology and the Environment

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In this paper redesign process of an axial compressor of a Gas Turbine for mechanical drive is discussed together with computational results and experimental data. The goal of the project was to reduce compressor mass flow by 30% and at the same time to increase compressor specific work by about 10%. This could not be achieved by conventional methods such as re-staggering of Inlet Guide Vanes. Throughflow and CFD calculations were performed for redesigned versions. As a result an updated compressor was produced for the real engine and achieved design objectives. This paper shows how the swept area distribution along the compressor affects stage loading distribution and surge limits.

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Section: Cfd Calculations and Analysismentioning

confidence: 99%

“…Though, it was expected to reduce the isentropic efficiency of the compressor by about 2%. Similar re-design project was carried earlier on for better stage matching (see [1]).…”

Section: Introductionmentioning

confidence: 99%

Redesign of an Axial Compressor With Mass Flow Reduction of 30%

Sedunin¹,

Komarov²,

Blinov³

et al. 2018

WIT Transactions on Ecology and the Environment

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“…One of the key factors determining the efficiency of a gas turbine engine is the performance of an axial compressor and turbine. Since the flow in axial turbomachines is generally three-dimensional, it is important to consider a appropriate flow operating point in the blade channels [3].…”

Section: Introductionmentioning

confidence: 99%

Identification of corner separation modelling in axial compressor stage

et al. 2020

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The paper presents a study of corner separations in hub to blade region at various operation conditions towards compressor stall. It is known that for compressor flows with low or none separations computation fluid dynamics with RANS methods work quite well, however, for highly separated flows they are no longer entirely valid. Therefore, several criteria were applied for prediction and quantification of possible corner separation, and the main interest of this work is in predicting the separation just before it will actually happen by certain flow metrics, so these metrics can be further used as a ‘pre-stall’ criteria whilst the RANS CFD operating point still behave within its appropriate limits. Also the effect of shear lean is discussed in the presented context.

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