Velocity spectra and transition into turbulence in synthetic jets

0360101 - ÚT 2012 RIV CZ eng C - Conference Paper (international conference)
Tesař, Václav
Velocity spectra and transition into turbulence in synthetic jets.
25th Symposium on Anemometry. Praha: Institute of Hydrodynamics ASCR, v. v. i., 2011 - (Chára, Z.; Klaboch, L.), s. 63-73. ISBN 978-80-87117-08-8.
[Symposium on Anemometry /25./. Holany - Litice (CZ), 31.05.2011-01.06.2011]
R&D Projects: GA ČR(CZ) GCP101/11/J019
Institutional research plan: CEZ:AV0Z20760514
Keywords : synthetic jet * spectral analysist * transition into turbulence
Subject RIV: BK - Fluid Dynamics

Paper investigates transition into turbulence in synthetic jet. The investigation was based on the quasi-similarity model with model parameter varying along the jet trajectory.The distance travelled from the nozzle to the location of the transition depends on the driving frequency – and hence on the size of the vortical structures, which were modelled by a sphetical vortex model. It appears the trasnsition takes placeat the distance equal to ~20 diameters of this model object.
Permanent Link: http://hdl.handle.net/11104/0197733