Analysis of turbulent synthetic jet by dynamic mode decomposition

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F17%3A00319969" target="_blank" >RIV/68407700:21220/17:00319969 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1051/epjconf/201714302040" target="_blank" >http://dx.doi.org/10.1051/epjconf/201714302040</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/epjconf/201714302040" target="_blank" >10.1051/epjconf/201714302040</a>

Result language
angličtina
Original language name
Analysis of turbulent synthetic jet by dynamic mode decomposition
Original language description
The article deals with the analysis of CFD results of the turbulent synthetic jet. The numerical simulation of Large Eddy Simulation (LES) using commercial solver ANSYS CFX has been performed. The unsteady flow field is studied from the point of view of identification of the moving vortex ring, which has been identified both on the snapshots of flow field using swirling-strength criterion and using the Dynamic Mode Decomposition (DMD) of five periods. It is shown that travelling vortex ring vanishes due to interaction with vortex structures in the synthesised turbulent jet. DMD modes with multiple of the basic frequency of synthetic jet, which are connected with travelling vortex structure, have largest DMD amplitudes.
Czech name
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Czech description
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Project
<a href="/en/project/GA14-08888S" target="_blank" >GA14-08888S: Control of flow fields by means of fluid oscillation</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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