Local velocities and determination of the energy dissipation in an agitated vessel

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F13%3A00423202" target="_blank" >RIV/67985874:_____/13:00423202 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Local velocities and determination of the energy dissipation in an agitated vessel

Popis výsledku v původním jazyce

The most mixing processes are designed using the value of the input energy per unit mass which is an essential integral parameter. Although the processes such as dispergation, flocculation etc. are drive by that phenomenon, the exact knowledge of the dissipation rate distribution is still difficult to obtained because the direct measurement of the local dissipation rate has not been established yet. Therefore we decided to derive the local dissipation rates and integral scale lengths using the temporaldependencies of the local velocities. Several data obtained for an agitated vessel from the measurements (LDA, PIV) and numerical simulations (LES) are compared and processed by the turbulence spectral analysis in selected points with respect of the relation to dominant flow and turbulence isotropy. The dissipation rates and the integral scale lenghts are derived using the various methods and theoretical presumptions which are compared and analysed.

Název v anglickém jazyce

Local velocities and determination of the energy dissipation in an agitated vessel

Popis výsledku anglicky

The most mixing processes are designed using the value of the input energy per unit mass which is an essential integral parameter. Although the processes such as dispergation, flocculation etc. are drive by that phenomenon, the exact knowledge of the dissipation rate distribution is still difficult to obtained because the direct measurement of the local dissipation rate has not been established yet. Therefore we decided to derive the local dissipation rates and integral scale lengths using the temporaldependencies of the local velocities. Several data obtained for an agitated vessel from the measurements (LDA, PIV) and numerical simulations (LES) are compared and processed by the turbulence spectral analysis in selected points with respect of the relation to dominant flow and turbulence isotropy. The dissipation rates and the integral scale lenghts are derived using the various methods and theoretical presumptions which are compared and analysed.

Druh

D - Stať ve sborníku

CEP obor

BK - Mechanika tekutin

OECD FORD obor

—

Projekt

<a href="/cs/project/GAP101%2F12%2F2274" target="_blank" >GAP101/12/2274: Lokální rychlost disipace turbulentní energie v míchaných reaktorech & bioreaktorech</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název statě ve sborníku

XXI Ogólnopolska Konferencja Inżynierii Chemicznej i Procesowej

ISBN

978-83-7518-594-2

ISSN

—

e-ISSN

—

Počet stran výsledku

1

Strana od-do

—

Název nakladatele

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie

Místo vydání

Szczecin

Místo konání akce

Kołobrzeg

Datum konání akce

2. 9. 2013

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—