Abstract
The paper describes experiments on acoustically excited axisymmetric turbulent jet flows. The investigation is based on the hypothesis that so called oblique transition may play a role in the breakdown to turbulence for an axisymmetric jet. For wall bounded flows oblique transition gives rise to steady streamwise streaks that break down to turbulence, as for instance documented by Elofsson & Alfredsson (J. Fluid Mech. 358). The scenario of oblique transition has so far not been considered for jet flows and the aim was to study the effect of two oblique modes on the transition scenario as well as on the flow dynamics. Even though it was not possible to detect the presence of streamwise streaks, for a certain range of the excitation frequencies, the turbulence intensity, at a fixed streamwise position, is found to be significantly reduced.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Batchelor G, Gill A (1962) Analysis of the stability of axisymmetric jets. J. Fluid Mech. 14:529–551
Corke T, Kusek S (1993) Resonance in axisymmetric jets with controlled helical-mode input. J. Fluid Mech. 249:307–336
Crow S, Champagne F (1971) Orderly structure in jet turbulence. J. Fluid Mech. 48:547–591
Elofsson P, Alfredsson P H (1998) An experimental study of oblique transition in plane Poiseuille flow. J. Fluid Mech. 358:177–202
Husain H, Hussain F (1995) Experiments on subharmonic resonance in a shear layer. J. Fluid Mech. 304:343–372
Örlü R (2009) Experimental studies in jet flows and zero pressure-gradient turbulent boundary layers. PhD thesis Royal Institute of Technology, Stockholm, Sweden
Zaman K, Hussain A K M F (1981) Turbulence suppression in free shear flows by controlled excitation. J. Fluid Mech. 103:133–159
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2010 Springer Science+Business Media B.V.
About this paper
Cite this paper
Örlü, R., Segalini, A., Talamelli, A., Alfredsson, P.H. (2010). Effect of oblique waves on jet turbulence. In: Schlatter, P., Henningson, D. (eds) Seventh IUTAM Symposium on Laminar-Turbulent Transition. IUTAM Bookseries, vol 18. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-3723-7_95
Download citation
DOI: https://doi.org/10.1007/978-90-481-3723-7_95
Published:
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-3722-0
Online ISBN: 978-90-481-3723-7
eBook Packages: EngineeringEngineering (R0)