Estimating the Local Turbulent Energy Dissipation Rate Using 2-D PIV Measurements and a 1-D Energy Spectrum Function

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F15%3A00230585" target="_blank" >RIV/68407700:21220/15:00230585 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1134/S004057951502013X" target="_blank" >http://dx.doi.org/10.1134/S004057951502013X</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1134/S004057951502013X" target="_blank" >10.1134/S004057951502013X</a>

Result language

angličtina

Original language name

Estimating the Local Turbulent Energy Dissipation Rate Using 2-D PIV Measurements and a 1-D Energy Spectrum Function

Original language description

A simple method for estimating the local turbulent energy dissipation rate for a non-isotropic state is proposed. The proposed method is based on an estimation of the isotropic dissipation rate under the assump- tion of local isotropy, which is subsequently corrected for the actual conditions. The level of anisotropy is char- acterized by the fluctuation velocity components. The isotropic dissipation rates are obtained by energy spec- trum function fitting. A data block averaging technique is used to smooth the spectrum. The effect of the data number within block on the calculated turbulent energy dissipation rate is taken into account. The proposed method has been tested on data obtained by a 2-D time-resolved PIV method. The effect of the spatial resolution of PIV on the estimation of the dissipation rate is also taken into account, using the correction proposed by Delafosse et al. (2011). The estimate of the local turbulent energy dissipation was found to be the same irre- spective

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

BK - Liquid mechanics

OECD FORD branch

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Project

<a href="/en/project/GAP101%2F12%2F2274" target="_blank" >GAP101/12/2274: Local rate of turbulent energy dissipation in agitated reactors & bioreactors</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2015

Confidentiality

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

Name of the periodical

Theoretical Foundations of Chemical Engineering

ISSN

0040-5795

e-ISSN

—

Volume of the periodical

49

Issue of the periodical within the volume

2

Country of publishing house

RU - RUSSIAN FEDERATION

Number of pages

12

Pages from-to

145-156

UT code for WoS article

000352910900003

EID of the result in the Scopus database

2-s2.0-84938243356