The Interaction of the Precessing Vortex Core and Reverse Flow Zone in the Exhaust of a Swirl Burner

Author:

Syred N1,O'Doherty T1,Froud D1

Affiliation:

1. School of Engineering, University of Wales College of Cardiff, Wales

Abstract

This paper describes recent work at Cardiff to gain further understanding of the fundamental processes occurring in swirl burners. The phenomenon of the precessing vortex core has been characterized via the use of a two-component laser anemometry system and the signal from a hot-wire anemometry probe for triggering purposes. This has allowed the rotating three-dimensional flow associated with the precessing vortex core to be characterized for the first time at different downstream sections. Regions of reversed mean tangential velocity have been identified while new insights into the basic structure of the reverse flow zone have been provided.

Publisher

SAGE Publications

Subject

Mechanical Engineering,Energy Engineering and Power Technology

Reference9 articles.

1. Syred N., Gupta A. K., Beer J. M. Temperature and density gradient changes arising with the precessing vortex core and vortex breakdown in swirl burners. Proceedings of Fifteenth International Symposium on Combustion, 1975, pp. 587–597 (The Combustion Institute, Pittsburgh, Pa.).

2. Combustion in swirling flows: A review

3. Claypole T. C., Syred N. Coherent structures in swirl generators and combustors. Proceedings of the Symposium on Vortex flows held at the Winter Annual Meeting of ASME, Chicago, 1980, pp. 47–56, Library of Congress Catalog Card 80–69187.

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