This paper covers a comprehensive forced response analysis conducted on a multistage compressor and compared with the largest forced response experimental data set ever obtained in the field. The steady-state aerodynamic performance and stator wake predictions compare well with the experimental data, although losses are underestimated. Coupled and uncoupled unsteady simulations are conducted on the stator–rotor configuration. It is shown that the use of a decoupled method for forced response cannot yield accurate results for cases with strong inter-row interactions. The individual and combined contributions of the upstream and downstream stators are also assessed. The downstream stator is found to have a tremendous impact on the forced response predictions due to the constructive interactions of the two stator rows. Finally, predicted mistuned blade amplitudes are compared to mistuned experimental data. The average amplitudes match the experiments very well, while the maximum response amplitude is underestimated.
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June 2016
Research-Article
Mistuned Forced Response Predictions of an Embedded Rotor in a Multistage Compressor
Nicole L. Key
Nicole L. Key
Zucrow Laboratories,
School of Mechanical Engineering,
Purdue University,
West Lafayette, IN 47907
e-mail: nkey@ecn.purdue.edu
School of Mechanical Engineering,
Purdue University,
West Lafayette, IN 47907
e-mail: nkey@ecn.purdue.edu
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Fanny M. Besem
Robert E. Kielb
Paul Galpin
Laith Zori
Nicole L. Key
Zucrow Laboratories,
School of Mechanical Engineering,
Purdue University,
West Lafayette, IN 47907
e-mail: nkey@ecn.purdue.edu
School of Mechanical Engineering,
Purdue University,
West Lafayette, IN 47907
e-mail: nkey@ecn.purdue.edu
1Corresponding author.
2Present address: Numeca, San Francisco, CA 94109.
Contributed by the International Gas Turbine Institute (IGTI) of ASME for publication in the JOURNAL OF TURBOMACHINERY. Manuscript received October 17, 2015; final manuscript received November 4, 2015; published online February 9, 2016. Editor: Kenneth C. Hall. Review conducted by David Wisler.
J. Turbomach. Jun 2016, 138(6): 061003 (10 pages)
Published Online: February 9, 2016
Article history
Received:
October 17, 2015
Revised:
November 4, 2015
Citation
Besem, F. M., Kielb, R. E., Galpin, P., Zori, L., and Key, N. L. (February 9, 2016). "Mistuned Forced Response Predictions of an Embedded Rotor in a Multistage Compressor." ASME. J. Turbomach. June 2016; 138(6): 061003. https://doi.org/10.1115/1.4032164
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