Experimental study on the use of the wake instability as a passive control in coaxial jet flows
2010 (English)In: Seventh IUTAM Symposium on Laminar-Turbulent Transition, 2010, 361-366 p.Conference paper (Refereed)
The present paper verifies experimentally the theoretical result by Talamelli and Gavarini (Flow, Turbul. & Combust., 2006), who proposed that the wake behind the separation wall between the two streams of a coaxial jet creates the condition for an absolute instability. This absolute instability, by means of the induced vortex shedding, provides a continuous forcing mechanism for the control of the flow field. The potential of the found control mechanism as well as its robustness has been verified and its ability to enhance the turbulence intensity within the inner and outer shear layer has been demonstrated.
Place, publisher, year, edition, pages
2010. 361-366 p.
Fluid Mechanics and Acoustics
IdentifiersURN: urn:nbn:se:kth:diva-83152DOI: 10.1007/978-90-481-3723-7_58ISI: 000277097200058ScopusID: 2-s2.0-78649865444ISBN: 978-90-481-3722-0OAI: oai:DiVA.org:kth-83152DiVA: diva2:498745
7th IUTAM Symposium on Laminar-Turbulent Transition. Royal Inst Technol, Stockholm, SWEDEN. JUN 23-26, 2009
QC 201202132012-02-122012-02-122012-02-13Bibliographically approved