Comparison of wavelet analysis with velocity derivatives for detection of shear layer and vortices inside a turbulent boundary layer

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F11%3A00370298" target="_blank" >RIV/61388998:_____/11:00370298 - isvavai.cz</a>

Result on the web

<a href="http://iopscience.iop.org/1742-6596/318/6/062012?fromSearchPage=true" target="_blank" >http://iopscience.iop.org/1742-6596/318/6/062012?fromSearchPage=true</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1742-6596/318/6/062012" target="_blank" >10.1088/1742-6596/318/6/062012</a>

Result language

angličtina

Original language name

Comparison of wavelet analysis with velocity derivatives for detection of shear layer and vortices inside a turbulent boundary layer

Original language description

Detection of highly energetic structure in the turbulent flow can be easily done by wavelet analysis, especially with Morlet function as a mother wavelet for detection of repetitious low-frequency structures and Mexican hat for detection of vortices. Since wavelet analysis can be simply applied on one-point measurement, the better understanding of its meaning is welcome. In this project, turbulent boundary layer was investigated with focus on intermittent dynamics. PIV snapshot were used for comparisonwith Wavelet analysis results, since PIV was performed with high sample frequency (500 Hz). Instantaneous snapshots of velocity and vorticity were studied also by POD and spectra of particular expansion coefficients were computed. Vorticity from planar velocity vectors was used as a suitable methods for recognition of strongly deformed streamlines.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DG - Atmospheric sciences, meteorology

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2011

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Physics, Conference Series

ISSN

1742-6596

e-ISSN

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Volume of the periodical

318

Issue of the periodical within the volume

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Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

1-10

UT code for WoS article

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EID of the result in the Scopus database

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