Identification of coherence in turbulent flows by local correlations

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F14%3A00430510" target="_blank" >RIV/61388998:_____/14:00430510 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Identification of coherence in turbulent flows by local correlations

Original language description

Coherent structures are not included in practically useful models of turbulence due to scarcity of data upon which the modelling could be based. The problem is indistinct, vague, and continuously varying boundary of each structure, making difficult evenidentification of its very existence. The introduced identification method operates with a pair of flow visualisation images, computing local correlation coefficients in sequentially interrogated small image parts. The coherence is revealed by high localvalues of the coefficient. There are two variants, a scalar and vector approaches. The method is shown applied to an experiment in which the structures play an important role.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

BK - Liquid mechanics

OECD FORD branch

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Project

<a href="/en/project/GA13-23046S" target="_blank" >GA13-23046S: Fludic oscillators for algae cultivation</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2014

Confidentiality

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

Article name in the collection

28th Symposium on Anemometry

ISBN

978-80-87117-11-8

ISSN

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e-ISSN

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Number of pages

18

Pages from-to

65-83

Publisher name

Institute of Hydrodynamics ASCR, v. v. i.

Place of publication

Praha

Event location

Holany-Litice

Event date

Jun 3, 2014

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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