Influence of Carrying Frequency Phase Shift of Synthetic Jet Generator on The Noise
1.
SYSNO ASEP
0427864
Document Type
C - Proceedings Paper (int. conf.)
R&D Document Type
Conference Paper
Title
Influence of Carrying Frequency Phase Shift of Synthetic Jet Generator on The Noise
Author(s)
Pick, P. (CZ) Matějka, Milan (UT-L) Skála, V. (CZ)
Source Title
Topical Problems of Fluid Mechanics 2014. - Praha : Ústav termomechaniky AV ČR, v. v. i., 2014 / Šimurda D. ; Bodnár T.
- ISBN 978-80-87012-51-2
Pages
s. 93-96
Number of pages
4 s.
Publication form
Print - P
Action
Topical Problems of Fluid Mechanics 2014
Event date
19.02.2014-21.02.2014
VEvent location
Praha
Country
CZ - Czech Republic
Event type
EUR
Language
eng - English
Country
CZ - Czech Republic
Keywords
synthetic jet ; modulationfreqency ; carrying frequency ; noise
Subject RIV
BK - Fluid Dynamics
R&D Projects
GAP101/10/1230 GA ČR - Czech Science Foundation (CSF)
GA101/08/1112 GA ČR - Czech Science Foundation (CSF)
Institutional support
UT-L - RVO:61388998
Annotation
The main topic of this article is the influence of phase shift of neighbouring synthetic jet generators to the flow field past a hump and noise reduction. Syntheetic jet generators are placed in the hump in front of point of boundary layer separation. The carrying frequency of actuating signal, wich is driving the synthetic jet generator, is shifted for about 180°. The modulated frequency, which corresponds to the shading frequency of the flow, is superposed on the carrying signal. Finally, the benefits of phase shift signal of neighbouring synthetic jet generators are described, as far as the produced noise and the total loss coefficient decrease are concerned.
Workplace
Institute of Thermomechanics
Contact
Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823
Year of Publishing
2015
Number of the records: 1
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