The present paper confirms experimentally the theoretical result by Talamelli and Gavarini (Flow, Turbul. & Combust., 2006), who proposed that the wake behind a separation wall between two streams of a coaxial jet creates the condition for an absolute instability. This instability, by means of the induced vortex shedding, provides a continuous forcing mechanism for the control of the flow field. The potential of this passive mechanism as an easy, effective and practical way to control the near-field of interacting shear layers has been demonstrated and its effect towards increased turbulence activity has been shown.
Örlü R., Segalini A., Alfredsson P.H., Talamelli A. (2008). On the passive control of the near-field of coaxial jets by means of vortex shedding. BERLIN : s.n.
On the passive control of the near-field of coaxial jets by means of vortex shedding
SEGALINI, ANTONIO;TALAMELLI, ALESSANDRO
2008
Abstract
The present paper confirms experimentally the theoretical result by Talamelli and Gavarini (Flow, Turbul. & Combust., 2006), who proposed that the wake behind a separation wall between two streams of a coaxial jet creates the condition for an absolute instability. This instability, by means of the induced vortex shedding, provides a continuous forcing mechanism for the control of the flow field. The potential of this passive mechanism as an easy, effective and practical way to control the near-field of interacting shear layers has been demonstrated and its effect towards increased turbulence activity has been shown.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
