Unsteady Swirling Flows in Gas Turbines.
Abstract
The overall objective was to acquire fundamental understanding of phenomena characterized by violent fluctuation induced by swirling flow - the 'vortex whistle', often found to occur in various aircraft engine components. By conducting a comprehensive and systematic investigation into the 'vortex whistle', it was intended to achieve the following specific goals: (1) by performing analysis to predict the frequency of the vortex whistle and verifying it against the experimental results, one can detune the natural frequencies of engine components away from it in order to ensure their structural integrity, and (2) by appealing to the mechanism of acoustic streaming induced by the vortex whistle, we explained, through both analysis and experiment, the transformation of steady radial profile - in particular the total temperature separation or the Ranque-Hilsch tube effect; the implications of this are that the radial distortion of the flow field may have strong bearing on the 'steady' aero data obtained in the swirling flow environment of gas turbines. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1983
- Accession Number
- ADA128386
Entities
People
- M. Kurosaka
Organizations
- University of Tennessee Space Institute