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Predicting Dynamic Stress in Centrifugal Compressors

[+] Author Affiliations
D. Lee Hill

Dresser-Rand Company

Paper No. IMECE2004-60162, pp. 105-126; 22 pages
doi:10.1115/IMECE2004-60162
From:
  • ASME 2004 International Mechanical Engineering Congress and Exposition
  • Process Industries
  • Anaheim, California, USA, November 13 – 19, 2004
  • Conference Sponsors: Process Industries Division
  • ISBN: 0-7918-4717-9 | eISBN: 0-7918-4178-2, 0-7918-4179-0, 0-7918-4180-4
  • Copyright © 2004 by ASME

abstract

The best analytical process to resolve the dynamic stress in rotating machinery has not yet been established. This is largely due to the different classes of the fluid induced vibration that exist today. This reported effort establishes a sound methodology of resolve fluid induced stresses that occur at resonant frequencies. The proposed process incorporates the use of transient sliding mesh computational fluid dynamics and forced frequency response finite element analysis. Details of the new process are provided along with any perceived limitations. There are 2 detailed case studies that are provided. The results obtained are validated with experimental impeller strain gauge data that was obtained during a full-load hydrocarbon test program. These case studies also provide good insight into the role volutes play on the dynamic stress of impellers.

Copyright © 2004 by ASME
Topics: Compressors , Stress

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