0

Full Content is available to subscribers

Subscribe/Learn More  >

An Experimental Study on Droplet Generation in Bearing Chambers Caused by Roller Bearings

[+] Author Affiliations
P. Gorse, K. Dullenkopf, H.-J. Bauer, S. Wittig

Universität Karlsruhe, Karlsruhe, Germany

Paper No. GT2008-51281, pp. 1681-1692; 12 pages
doi:10.1115/GT2008-51281
From:
  • ASME Turbo Expo 2008: Power for Land, Sea, and Air
  • Volume 4: Heat Transfer, Parts A and B
  • Berlin, Germany, June 9–13, 2008
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4314-7 | eISBN: 0-7918-3824-2
  • Copyright © 2008 by ASME

abstract

The lifetime of aero-engine roller bearings strongly depends on lubrication and particularly on sufficient cooling provided by the oil system of the engine. During the development of advanced engines the overall oilflow has to be minimized to reduce size and weight of oil pipes and pumps. To support this development a fundamental understanding of the complex air/oilflow in bearing chambers is required. Although numerous efforts to characterize the liquid wall films were performed in recent years, only few investigations were carried out to carefully study the droplet generation in bearing chambers under realistic conditions. Therefore, the current research was initiated. Within the scope of this paper, a comprehensive experimental study on the droplet generation by a cylindrical roller bearing was carried out for a wide range of engine relevant conditions. In a first step, the oilflow near the roller bearing was visualized in a model bearing compartment. The results revealed that the pressure difference across the bearing and the design of the bearing support have strong influence on the generation of droplets. Furthermore, the velocity of the droplets was determined by means of stereoscopic particle image velocimetry. Based on these results a significantly improved understanding of the droplet generation caused by roller bearings was derived and compared to the experiments.

Copyright © 2008 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