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Transient performance prediction of an axial compressor considering VIGV operation speeds

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An Erratum to this article was published on 01 November 2014

Abstract

In the present study, transient performance and flow characteristics of a 1.5-stage compressor with VIGV are investigated using CFD. The level of accuracy of CFD approach is evaluated by comparing the predicted performance against experimental data of a 3.5-stage compressor. The main objective of the present research is to quantitatively estimate the performance of transonic axial-flow compressor under transient operation of VIGV compared to steady-state performances on static IGV condition. The present study is performed to investigate the effect of VIGV movement on the performance characteristics when the VIGV setting angle varies with time. The VIGV is set to rotate in the clockwise and counterclockwise directions. The results were compared with steady-state predictions. Reasonable differences are observed in mass flow rate predictions (2%∼6%) between the transient and the steady-state calculations as VIGV operation speed varies. As VIGV operation speed increases, the difference in mass flow rate also increases. Therefore, a change in work input of the compressor is confirmed due to changes in mass flow rate. This is mainly caused by the changes in deviation and incidence angles depending on the operation speed and operation direction (clockwise and counterclockwise). The changes in deviation and incidence angles reflected on the entropy distribution. Even in mid-span, there is variation in angles depending on the operation speed and direction.

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Author information

Authors and Affiliations

  1. Department of Aerospace Engineering, Pusan National University, Busan, 609-735, Korea

    Donghyun Kim, Sangjo Kim & Kuisoon Kim

  2. School of Mechanical Engineering, Pusan National University, Busan, 609-735, Korea

    Changmin Son

  3. The 4th R&D Institute, Agency for Defense Development, Daejeon, Korea

    Myungho Kim & Seongki Min

Authors
  1. Donghyun Kim
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  2. Sangjo Kim
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  3. Changmin Son
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  4. Kuisoon Kim
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  5. Myungho Kim
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  6. Seongki Min
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Corresponding author

Correspondence to Changmin Son.

Additional information

Recommended by Associate Editor Byeong Rog Shin

Donghyun Kim is a Ph.D. candidate of Department of Aerospace Engineering in Pusan National University (PNU), Busan, Korea. He received his M.S. degree in field of compressible flow in 2013 from Pusan National University, Korea. His research focuses on a multistage axial compressor aerodynamics and performance analysis.

Changmin Son is a professor of School of Mechanical Engineering in Pusan National University (PNU), Busan, Korea. He joined Turbine Systems in Rolls-Royce plc in 2002, after completing his doctoral degree in University of Oxford. In Rolls-Royce plc, he contributed to various engine development programs.

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Kim, D., Kim, S., Son, C. et al. Transient performance prediction of an axial compressor considering VIGV operation speeds. J MECH SCI TECHNOL 28, 4099–4107 (2014). https://doi.org/10.1007/s12206-014-0923-7

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  • DOI: https://doi.org/10.1007/s12206-014-0923-7

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