Passive control of jet with three-wedge nozzle

Hailing An; Wei Shu; Xin Liu

doi:10.1117/12.468776

29 May 2002 Passive control of jet with three-wedge nozzle

Hailing An, Wei Shu, Xin Liu

Proceedings Volume 4537, Third International Conference on Experimental Mechanics; (2002) https://doi.org/10.1117/12.468776
Event: Third International Conference on Experimental Mechanics, 2002, Beijing, China

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.

Citation Download Citation

Hailing An, Wei Shu, and Xin Liu "Passive control of jet with three-wedge nozzle", Proc. SPIE 4537, Third International Conference on Experimental Mechanics, (29 May 2002); https://doi.org/10.1117/12.468776

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