High-frequency fluidic oscillator

被引：22

作者：

Tesar, Vaclav ^{[1
]}

机构：

[1] Acad Sci Czech Republ, Inst Thermomech, Vvi, Prague, Czech Republic

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2015年 / 234卷

关键词：

Pulsating flow; Jet; Fluidics; Fluidic oscillator; Frequency spectra; Captive vortex; SEPARATION CONTROL; FLOW;

D O I：

10.1016/j.sna.2015.08.019

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

There is a number of potential applications for no-moving-part fluidic oscillators if they could oscillate in the kilohertz range and yet be of convenient, i.e. not too small size. The solution offered in this paper is based on a new oscillation principle, with stationary rotating vortex inside the chamber bounded by two attachment walls. The response to gradually increasing air flow rate has shown three distinct regimes, of prime importance being the constant Strouhal number regime at small Reynolds numbers from Re similar to 2600 to Re similar to 6000, oscillating at f = 1.7 kHz and f similar to 5 kHz, respectively. Even higher frequency f similar to 8.2 kHz was found in another, higher Re regime. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：158 / 167

页数：10

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