0
RESEARCH PAPERS

Performance of Radial Clearance Rim Seals in Upstream and Downstream Rotor–Stator Wheelspaces

[+] Author and Article Information
S. Dadkhah, A. B. Turner

Thermo-Fluid Mechanics Research Centre, School of Engineering and Applied Sciences, University of Sussex, Brighton, BN1 9QT, United Kingdom

J. W. Chew

Rolls Royce plc, Derby, United Kingdom

J. Turbomach 114(2), 439-445 (Apr 01, 1992) (7 pages) doi:10.1115/1.2929163 History: Received February 06, 1991; Online June 09, 2008

Abstract

A new experimental facility for the investigation of rim sealing is described and measurements are presented for two representative radial clearance seals with a nominally axisymmetric external flow. One radial seal has an upward rotor lip and is upstream of the rotor, while the other has an upward stator lip and is downstream of the rotor. Measurements include surface pressures, tangential velocities in the core region of the disk cavity flow, and traverses of gas concentration in the cavity showing the distribution of mainstream ingestion. Tests were conducted at rotational Reynolds numbers up to 3 × 106 with nominal seal clearance to radius ratios in the range 0.002 to 0.01. For the radial seals a differential pressure criterion is found to overestimate the minimum sealing flow. Tangential velocity measurements in the wheelspace are in excellent agreement with other workers’ measurements and with theoretical predictions.

Copyright © 1992 by The American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Discussions

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 Journal Articles
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