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TsAGI Science Journal

ISSN Imprimer: 1948-2590
ISSN En ligne: 1948-2604

TsAGI Science Journal

DOI: 10.1615/TsAGISciJ.2013007486
pages 753-774

INVESTIGATION OF CHARACTERISTIC PROPERTIES OF FLOWS IN DUCTS DURING INTERFERENCE BETWEEN PERTURBATIONS AND PSEUDO-SHOCK

Natalya Valeryevna Guryleva
Central Aerohydrodynamic Institute (TsAGI), 1, Zhukovsky St., Zhukovsky, Moscow Region, 140180 Russia
Mikhail Anatolyevich Ivan'kin
Central Aerohydrodynamic Institute (TsAGI), 1, Zhukovsky str., Zhukovsky, 140180, Moscow region
Dmitry Aleksandrovich Lapinsky
Central Aerohydrodynamic Institute (TsAGI), 1, Zhukovsky St., Zhukovsky, Moscow Region, 140180 Russia
Valeriy Ivanovich Timoshenko
Institute of Technical Mechanics of National Academy of Sciences of Ukraine and National Space Agency of Ukraine (ITM of NASU and SSAU), 15 Leshko-Popelya St., Dnipropetrovsk 49600, Ukraine

RÉSUMÉ

The phenomenon of recirculation zones during the interaction of free or fixed pseudo-shock with perturbations from a thin needle, vortex filament and low-pressure jet is considered. The effect of this interaction on the integral characteristics of flows in ducts and the methods of their control are evaluated. Based on studies of the interaction of vortex filament generated ahead of the entry of the duct with pseudo-shock, a method to improve the characteristics of the flow in the duct in the case of a vortex filament passing into the inlet is offered. Improvement can be accomplished by the creation of a local recirculation zone at the duct entry by the sharp needle placed in front of the entry plane.


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