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URN: urn:nbn:de:swb:90-290669
Originalveröffentlichung
DOI: 10.1080/14685248.2012.679343

The influence of frequency-limited and noise-contaminated sensing on reactive turbulence control schemes

Stroh, A.; Frohnapfel, B.; Hasegawa, Y.; Kasagi, N.; Tropea, C.

Abstract:
The opposition control proposed by Choi et al. [1] is investigated using direct numerical simulation to see how bandwidth-limited and noise-contaminated sensing influence its control performance. It is found that the sensing frequency can be reduced substantially when the control scheme is modified to account for the convection speed of themeasured sensor signal. Noisy sensor signals are shown to strongly affect the achievable net energy saving rate and energy gain at high sensing frequencies, while their influence is weaker for reduced sensing frequencies. These results also hold for increased Reynolds number, where the performance of the control scheme is generally lower.


Zugehörige Institution(en) am KIT Institut für Strömungsmechanik (ISTM)
Publikationstyp Zeitschriftenaufsatz
Jahr 2012
Sprache Englisch
Identifikator ISSN: 1468-5248
KITopen ID: 1000029066
Erschienen in Journal of Turbulence
Band 13
Heft 16
Seiten N16
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