Control of a Round Jet Intermittency and Transition to Turbulence by Means of an Annular Synthetic Jet
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F21%3A00544701" target="_blank" >RIV/61388998:_____/21:00544701 - isvavai.cz</a>
Result on the web
<a href="https://www.mdpi.com/2076-0825/10/8/185" target="_blank" >https://www.mdpi.com/2076-0825/10/8/185</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/act10080185" target="_blank" >10.3390/act10080185</a>
Alternative languages
Result language
angličtina
Original language name
Control of a Round Jet Intermittency and Transition to Turbulence by Means of an Annular Synthetic Jet
Original language description
This paper deals with active control of a continuous jet issuing from a long pipe nozzle by means of a concentrically placed annular synthetic jet. The experiments in air cover regimes of laminar, transitional, and turbulent main jet flows (Reynolds number ranges 1082–5181). The velocity profiles (time-mean and fluctuation components) of unforced and forced jets were measured using hot-wire anemometry. Six flow regimes are distinguished, and their parameter map is proposed. The possibility of turbulence reduction by forcing in transitional jets is demonstrated, and the maximal effect is revealed at Re = 2555, where the ratio of the turbulence intensities of the forced and unforced jets is decreased up to 0.45.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20304 - Aerospace engineering
Result continuities
Project
<a href="/en/project/GC21-26232J" target="_blank" >GC21-26232J: Heat and mass transfer enhancement in unsteady jet flows - utilization of effects of hysteresis, bistability and intermittency</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Actuators
ISSN
2076-0825
e-ISSN
2076-0825
Volume of the periodical
10
Issue of the periodical within the volume
8
Country of publishing house
CH - SWITZERLAND
Number of pages
24
Pages from-to
185
UT code for WoS article
000688740800001
EID of the result in the Scopus database
2-s2.0-85112362151