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Proceedings Paper

Passive control of jet with three-wedge nozzle
Author(s): Hailing An; Wei Shu; Xin Liu
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Paper Abstract

Three-wedged nozzle was used to control turbulent structures generated form circular orifice. Experimental data were acquired with HWA and processed with spectrum analysis and wavelet transform. Similar results were obtained that relatively large structures are dominated at the exit edges for both circular jet and 3-wedge jet. Much higher frequency signals presenting small structures are detected near the core region. Compared with circular jet, the structures of higher frequency in 3-wedge jet show that the tabs on the exit nozzle make turbulent mixing efficient at relatively small scales. The frequency of vortex shedding at the tip of the wedge was obtained and it is consistent with the theoretical value.

Paper Details

Date Published: 29 May 2002
PDF: 4 pages
Proc. SPIE 4537, Third International Conference on Experimental Mechanics, (29 May 2002); doi: 10.1117/12.468776
Show Author Affiliations
Hailing An, Tianjin Univ. (China)
Wei Shu, Tianjin Univ. (China)
Xin Liu, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 4537:
Third International Conference on Experimental Mechanics
Xiaoping Wu; Yuwen Qin; Jing Fang; Jingtang Ke, Editor(s)

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