Axisymmetric impinging jet excited by a synthetic jet system

0369145 - ÚT 2012 RIV US eng J - Článek v odborném periodiku
Trávníček, Zdeněk - Němcová, L. - Kordík, Jozef - Tesař, Václav - Kopecký, V.
Axisymmetric impinging jet excited by a synthetic jet system.
International Journal of Heat and Mass Transfer. Roč. 55, č. 4 (2012), s. 1279-1290. ISSN 0017-9310. E-ISSN 1879-2189
Grant CEP: GA AV ČR(CZ) IAA200760801; GA ČR(CZ) GA101/09/1959
Výzkumný záměr: CEZ:AV0Z20760514
Klíčová slova: impinging jet * synthetic jet * flow control
Kód oboru RIV: BK - Mechanika tekutin
Impakt faktor: 2.315, rok: 2012
http://www.sciencedirect.com/science/article/pii/S0017931011005126

An axisymmetric air jet was excited, using a system of four synthetic jets, to the helical or bifurcating modes. The task was studied experimentally: the flow visualization, hot-wire anemometry, PIV, and naphthalene sublimation techniques were used. The effects of the Strouhal number and nozzle-to-wall spacing on a distribution of the local heat transfer were evaluated. The most significant effects (heat transfer enhancement 40% in the stagnation area) were found at the Strouhal numbers 0.32, Reynolds number 1600, ratio of the control to primary jet momentum rates 2.4%, and under small nozzle-to-wall spacing H/D = 2.
Trvalý link: http://hdl.handle.net/11104/0203284