0

Full Content is available to subscribers

Subscribe/Learn More  >

CFD Modeling to Study the Effect of Spacer Design on Centrifugal Compressor Exit Scroll Performance

[+] Author Affiliations
Vrushabhendra V. Patri, Uday K. Meduri

GE Oil & Gas, Bangalore, KA, India

Giuseppe Iurisci, Marco Giachi

GE Oil & Gas, Firenze, Italy

Paper No. GTINDIA2013-3593, pp. V001T01A008; 10 pages
doi:10.1115/GTINDIA2013-3593
From:
  • ASME 2013 Gas Turbine India Conference
  • ASME 2013 Gas Turbine India Conference
  • Bangalore, Karnataka, India, December 5–6, 2013
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-5616-1
  • Copyright © 2013 by ASME

abstract

Present day Centrifugal Compressor (CC) technology trend is moving towards innovative designs for improved performance. Computational Fluid Dynamics (CFD) plays an important role in the assessment and improvement of CC component design. Statoric parts like inlet plenum, diffuser, return channel, and exit scroll play a vital role in determining the overall performance of any compressor.

Exit scrolls (volute) are an integral part of any CC. A volute is essentially a flow collecting duct with its cross-section area increasing around the circumference as more volume of fluid is added. There are different types of volutes used for CC based on the type of application, casing size and the site conditions. The performance of a volute is very important in terms of magnitude of losses, static pressure recovery as well as impact on the upstream impeller. It is essential that the volute is well matched with the impeller and diffuser at the best stage efficiency point.

In addition to that, some obstructions needed for mechanical purposes (spacers, bolts, grooves) result in more losses, decreasing overall compressor efficiency affecting severely the upstream impeller. The purpose of this paper is to describe an extensive CFD analysis that was performed to understand and quantify the negative impact arising due to the presence of spacers, their shapes and circumferential location on the performance of the whole compressor.

The paper is divided into two sections. First section describes the CFD studies to understand performance of a typical scroll with spacers (boat tail spacers) as obstacles and effect of tangential location of spacers. The second section describes the CFD studies to understand the impact of the shape of spacers in a comparative manner.

Copyright © 2013 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In