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Experiments in Fluids
Erschienen in: Experiments in Fluids 6/2005

01.12.2005 | Research Article

Active control of lifted diffusion flames with arrayed micro actuators

verfasst von: N. Kurimoto, Y. Suzuki, N. Kasagi

Erschienen in: Experiments in Fluids | Ausgabe 6/2005

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Abstract

Active control of a lifted flame issued from a coaxial nozzle is investigated. Arrayed micro flap actuators are employed to introduce disturbances locally into the initial shear layer. Shedding of large-scale vortex rings is modified with the flap motion, and the flame characteristics such as liftoff height, blowoff limit, and emission trend, are successfully manipulated. Spatio-temporal evolution of large-scale vortical structures and fuel concentration is examined with the aid of PIV and PLIF in order to elucidate the control mechanisms. It is found that, depending on the driving signal of the flaps, the near-field vortical structures are significantly modified and two types of lifted flames having different stabilization mechanisms are realized.
Vorheriger Artikel Droplet size and morphology characterization for dense sprays by image processing: application to the Diesel spray
Nächster Artikel Use of proper orthogonal decomposition for time interpolation from PIV data

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Metadaten
Titel
Active control of lifted diffusion flames with arrayed micro actuators
verfasst von
N. Kurimoto
Y. Suzuki
N. Kasagi
Publikationsdatum
01.12.2005
Verlag
Springer-Verlag
Erschienen in
Experiments in Fluids / Ausgabe 6/2005
Print ISSN: 0723-4864
Elektronische ISSN: 1432-1114
DOI
https://doi.org/10.1007/s00348-005-0033-5

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