No-Moving-Part Two-Regimes Control of an Airfoil Cascade

0339605 - ÚT 2011 CZ eng C - Conference Paper (international conference)
Tesař, Václav
No-Moving-Part Two-Regimes Control of an Airfoil Cascade.
Topical Problems of Fluid Mechanics 2010. Praha: Ústav termomechaniky, AV ČR, v. v. i., 2010 - (Příhoda, J.; Kozel, K.), s. 151-154. ISBN 978-80-87012-25-3.
[Conference TOPICAL PROBLEMS OF FLUID MECHANICS 2010. Praha (CZ), 10.02.2010-11.02.2010]
R&D Projects: GA ČR GA101/07/1499; GA AV ČR IAA200760705
Institutional research plan: CEZ:AV0Z20760514
Keywords : airfoil cascade * separation control * fluidic valves
Subject RIV: BK - Fluid Dynamics

Airfoil cascades are essential parts of energy converting machines. The paper discusses a new concept of flow control in the cascade, inspired by fluidic amplifiers based on the Coanda effect. In place of mechanically articulated blades, the airfoil properties are controlled by auxiliary flow issuing from a slit nozzle in the blade. The alternate attachment to either one of a pair of attachment walls results in two alternative flow regimes. Several applications are discussed in detail, mainly concentrating on a cascade controlling the entrance flow into the vortex chamber of a turn-down flow control valve.
Permanent Link: http://hdl.handle.net/11104/0183081