0

Full Content is available to subscribers

Subscribe/Learn More  >

Detailed CFD Modeling of the Mixing Behavior in Oil Supply Pockets of Heavy Duty Gas and Steam Turbine Journal Bearings

[+] Author Affiliations
Stephan Uhkoetter, Stefan aus der Wiesche

Muenster University of Applied Sciences, Steinfurt, Germany

Franz Joos

Helmut-Schmidt-University, Hamburg, Germany

Paper No. GT2014-25074, pp. V07BT32A002; 10 pages
doi:10.1115/GT2014-25074
From:
  • ASME Turbo Expo 2014: Turbine Technical Conference and Exposition
  • Volume 7B: Structures and Dynamics
  • Düsseldorf, Germany, June 16–20, 2014
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4577-6
  • Copyright © 2014 by ASME

abstract

Oil supply pockets are essential parts for the functionality of journal bearings, because mixing and oil carry-over issues are substantially dominated by these design features. In recent years, the great potential of Computational Fluid Dynamics (CFD) has been recognized. An extensive analysis of the turbulent multiphase flow phenomena including cavitation has been reported for a whole gas and steam turbine journal bearing (GT2012). Furthermore, the complex structure of the turbulent flow in an oil supply pocket has been investigated numerically and validated by Laser-Doppler-Anemometry (LDA) measurements (GT2013). The interaction between oil supply jets with the main flow and the effective mixing behavior remained as challenging tasks. Therefore this study focused on this interaction by means of an up-scaled geometry and a full scale journal bearing. Due to the upscaled geometry, it was possible to assess the flow phenomena experimentally. An extensive CFD analysis including large eddy simulation (LES) was conducted and validated by flow visualizations. The influence of geometric features and performance parameters was investigated. It was found, that even minor changes of the inflow conditions could lead to measurable effects with regard to mixing and oil carry-over behavior.

Copyright © 2014 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