New fluidic-oscillator concept for flow-separation control

V. Tesař; S. Zhong; F. Rasheed

doi:10.2514/1.J051791

New fluidic-oscillator concept for flow-separation control

V. Tesař, S. Zhong, F. Rasheed

Mechanical and Aerospace Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

A novel fluidic oscillator, particularly suitable to serve as the key element in actuators for control of fluid flows, was proposed and experimentally investigated. Its core part, as in known oscillators, is a fluidic bistable jet-deflection diverter amplifier. The unique feature of the new layout is the absence of the closed feedback loop channels. Instead, there is a quarter-wave Helmholtz resonator tube connected to one of the amplifier control terminals. The acoustic waves traveling in it and reflected from its open end cause the phase-delayed switching of the amplifier. The main advantage is high achievable oscillation frequency and no dependence on the flow rate. Copyright © 2012 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.

Original language	English
Pages (from-to)	397-405
Number of pages	8
Journal	AIAA Journal
Volume	51
Issue number	2
DOIs	https://doi.org/10.2514/1.J051791
Publication status	Published - Feb 2013

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title = "New fluidic-oscillator concept for flow-separation control",

abstract = "A novel fluidic oscillator, particularly suitable to serve as the key element in actuators for control of fluid flows, was proposed and experimentally investigated. Its core part, as in known oscillators, is a fluidic bistable jet-deflection diverter amplifier. The unique feature of the new layout is the absence of the closed feedback loop channels. Instead, there is a quarter-wave Helmholtz resonator tube connected to one of the amplifier control terminals. The acoustic waves traveling in it and reflected from its open end cause the phase-delayed switching of the amplifier. The main advantage is high achievable oscillation frequency and no dependence on the flow rate. Copyright {\textcopyright} 2012 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.",

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AU - Zhong, S.

AU - Rasheed, F.

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AB - A novel fluidic oscillator, particularly suitable to serve as the key element in actuators for control of fluid flows, was proposed and experimentally investigated. Its core part, as in known oscillators, is a fluidic bistable jet-deflection diverter amplifier. The unique feature of the new layout is the absence of the closed feedback loop channels. Instead, there is a quarter-wave Helmholtz resonator tube connected to one of the amplifier control terminals. The acoustic waves traveling in it and reflected from its open end cause the phase-delayed switching of the amplifier. The main advantage is high achievable oscillation frequency and no dependence on the flow rate. Copyright © 2012 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.

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JO - AIAA Journal

JF - AIAA Journal

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New fluidic-oscillator concept for flow-separation control

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