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Proceedings Paper

Study on the near-wake flow behind EBMC flameholder
Author(s): Lianjie Yue; Bao-jie Liu; Maolin Yang
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Paper Abstract

The detailed near-wake flow behind the Edge Blowing Mixture Curtain flameholder and the V-gutter flameholder were investigated by using 2D cross-correlation on-line PIV in a low speed wind tunnel. Experiments were conducted at the main flow velocity of 10m/s and 20m/s, the jet velocity of 10m/s and 20m/s respectively. Results show that near-wake flow structure of both flameholders is governed mainly by large-scale vortices in the form of vortex street, and the jet increase the size of the vortices. But symmetrical large-scale vortices appear when the momentum ratio of the jet to the main flow is high, which is disadvantage to combustion. Based on the research on the instantaneous flow, the instantaneous viewpoint of the flame stability mechanism was brought forwad. Important effect of alternate formation and shedding of vortices on the flame stability was discussed. All of these offer important theoretic basis for further studying combustion performance of the novel flameholder.

Paper Details

Date Published: 29 April 2003
PDF: 11 pages
Proc. SPIE 5058, Optical Technology and Image Processing for Fluids and Solids Diagnostics 2002, (29 April 2003); doi: 10.1117/12.509744
Show Author Affiliations
Lianjie Yue, CAS, Institute of Mechanics (China)
Bao-jie Liu, Beijing Univ. of Aeronautics and Astronautics (China)
Maolin Yang, Beijing Univ. of Aeronautics and Astronautics (China)

Published in SPIE Proceedings Vol. 5058:
Optical Technology and Image Processing for Fluids and Solids Diagnostics 2002
Gong Xin Shen; Soyoung S. Cha; Fu-Pen Chiang; Carolyn R. Mercer, Editor(s)

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