Time-Mean Structure of Axisymmetric Synthetic Jets

0345313 - ÚT 2011 RIV CH eng J - Journal Article
Tesař, Václav - Kordík, Jozef
Time-Mean Structure of Axisymmetric Synthetic Jets.
Sensors and Actuators A - Physical. Roč. 161, 1-2 (2010), s. 217-224. ISSN 0924-4247. E-ISSN 1873-3069
R&D Projects: GA ČR GA101/07/1499; GA AV ČR IAA200760705
Institutional research plan: CEZ:AV0Z20760514
Keywords : synthetic jet * similarity solution * fluid flow
Subject RIV: BK - Fluid Dynamics
Impact factor: 1.933, year: 2010
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6THG-50B49R5-1&_user=640952&_coverDate=06%2F30%2F2010&_rdoc=1&_fmt=high&_orig=search&_sort=d&_docanchor=&view=c&_searchStrId=1401478319&_rerunOrigin=scholar.google&_acct=C000034318&_version=1&_urlVersion=0&_userid=640952&md5=9c1ee293f204acab661943a9c5be6438

The paper is based on authors‘a earlier model of synthetic jets – in the form of a set of simple ordinary differential equations for similarity-transformed quantities. The solution depends on a dimensionless parameter evaluated from experimental data. In contrast to analogous situation in similarity solutions of other shear flows, the parameter instead of being a constant was found to vary along the jet. Experients also show there are two distinctly different regions with clearly recognisable transition.The region downstream from the transition exhibits turbulence structure similar – but not identical – to those of steady jets.
Permanent Link: http://hdl.handle.net/11104/0186619