A study of vortex shedding induced by dielectric barrier injection |
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| Authors: | C Louste M Daaboul H Romat |
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| Institution: | Laboratoire d''Etudes Aérodynamiques (LEA), Université de Poitiers, ENSMA, CNRS, SP2MI – Téléport 2, Boulevard Marie et Pierre Curie – BP 30179, 86962 Futuroscope Chasseneuil Cedex, France;Instituto de Tecnologma Elictrica, Av. Juan de la Cierva 24 - Parque Tecnolsgico, 46980 - Paterna (Valencia), Spain |
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| Abstract: | Previous works have proved that a dielectric barrier injection (DBI) device could be used as an electrohydrodynamic (EHD) actuator. Such a device was used to generate a wall jet with an average velocity of 0.14 m/s.In this study, the liquid flow induced in the surface vicinity by a DBI actuator is measured by Particle Image Velocimetry (PIV). The phase analysis of the flow velocity shows that the DBI actuator mainly acts as a vortex generator. The work presented in this paper underline the relation between the vortex structures and the polarity of the injecting electrode. |
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