POD analysis of jet and vortex flows induced by oscillating backward facing step

Sertac Cadirci, Mustafa Ozsipahi*, Hasan Gunes

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Özet

An oscillatory, zero-net-mass flux actuator system, Jet and Vortex Actuator (JaVA), is implemented on the step wall of a backward facing step (BFS) in order to control the recirculation zone behind BFS. The actuator plate has a sinusoidal motion determined by the amplitude and the operating frequency. The proposed control method based on suction and blowing with an oscillating backward facing step seems to be effective in reducing the recirculation zone length and preventing flow separation downstream of BFS. Modal investigation of flow fields are performed by means of Proper Orthogonal Decomposition (POD). POD is applied to time-dependant snapshots of velocity fields at several operating frequencies. The POD modes revealed the behavior of the flow past a BFS under the effect of active flow control.

Orijinal dilİngilizce
Ana bilgisayar yayını başlığıProceedings of the 5th International Conference on Jets, Wakes and Separated Flows, ICJWSF 2015
EditörlerAntonio Segalini
YayınlayanSpringer Science and Business Media, LLC
Sayfalar249-257
Sayfa sayısı9
ISBN (Basılı)9783319306001
DOI'lar
Yayın durumuYayınlandı - 2016
Etkinlik5th International Conference on Jets, Wakes and Separated Flows, ICJWSF2015 - Stockholm, Sweden
Süre: 15 Haz 201518 Haz 2015

Yayın serisi

AdıSpringer Proceedings in Physics
Hacim185
ISSN (Basılı)0930-8989
ISSN (Elektronik)1867-4941

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???event.eventtypes.event.conference???5th International Conference on Jets, Wakes and Separated Flows, ICJWSF2015
Ülke/BölgeSweden
ŞehirStockholm
Periyot15/06/1518/06/15

Bibliyografik not

Publisher Copyright:
© Springer International Publishing Switzerland 2016.

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