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Temperature Rise During Deep Surge in Centrifugal Compression System FREE

[+] Author Affiliations
Ji Dai, Chuangang Gu, Yongmiao Miao

Xi’an Jiaotong University, Xi’an, Shannxi, P.R. China

Paper No. 95-GT-438, pp. V001T01A103; 11 pages
doi:10.1115/95-GT-438
From:
  • ASME 1995 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 1: Turbomachinery
  • Houston, Texas, USA, June 5–8, 1995
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7878-1
  • Copyright © 1995 by ASME

abstract

A theoretical model for temperature calculation is presented to understand the tendency of temperature rise during deep surge in a low-speed centrifugal compression system. The one-dimensional aerodynamic equations of unsteady incompressible flow are employed in all components of the system. The equations are suitable to the impeller as well as the stationary parts. The one-dimensional time varied coordinate and control volume approaches for numerical scheme are used in the model. If flow rates in every deep surge cycle are provided from transients calculation or experimental data, the temperature in any position of the system can be evaluated at any step of time. A small low-pressure centrifugal compressor facility for surge experiments is set up. The dynamic measurements for flow and temperature during deep surge are implemented, and the data from measurements can be applied to verify the reliability of present model. Some phenomena can also be discovered from experimental observations. Based on the present experimental and numerical investigations, the characteristics of temperature rise during deep surge are analyzed for different volumes of system and different boundary conditions. Some results are concluded, which are valuable in engineering.

Copyright © 1995 by ASME
This article is only available in the PDF format.

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