Modelling of Supercritical Turbulent Flow ower an Inclined Backward-Facing Step in a Open Channel

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F11%3APU95732" target="_blank" >RIV/00216305:26110/11:PU95732 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Modelling of Supercritical Turbulent Flow ower an Inclined Backward-Facing Step in a Open Channel

Popis výsledku v původním jazyce

The contribution deals with the experimental and numerical modelling of supercritical turbulent flow in an open channel with an inclined backward-facing step on its bottom. The step with the height h = 100 mm and the inclination angle alfa = 20 was placed in the water channel of the cross-section 200x200 mm. Experiments were carried out by means of the PIV and LDA measuring techniques. Numerical simulations were executed by the commercial software ANSYS CFX 12.0. Numerical results obtained by the two-equation SST model and the EARSM model completed by transport equations for turbulent energy and specific dissipation rate were compared with experimental data. The modelling was concentrated particularly on the flow pattern near the step including the possible flow separation and the corresponding changes of free surface. The agreement of numerical results obtained by means of the EARSM model with experimental data is quite good.

Název v anglickém jazyce

Modelling of Supercritical Turbulent Flow ower an Inclined Backward-Facing Step in a Open Channel

Popis výsledku anglicky

The contribution deals with the experimental and numerical modelling of supercritical turbulent flow in an open channel with an inclined backward-facing step on its bottom. The step with the height h = 100 mm and the inclination angle alfa = 20 was placed in the water channel of the cross-section 200x200 mm. Experiments were carried out by means of the PIV and LDA measuring techniques. Numerical simulations were executed by the commercial software ANSYS CFX 12.0. Numerical results obtained by the two-equation SST model and the EARSM model completed by transport equations for turbulent energy and specific dissipation rate were compared with experimental data. The modelling was concentrated particularly on the flow pattern near the step including the possible flow separation and the corresponding changes of free surface. The agreement of numerical results obtained by means of the EARSM model with experimental data is quite good.

Druh

D - Stať ve sborníku

CEP obor

BK - Mechanika tekutin

OECD FORD obor

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Projekt

<a href="/cs/project/GA103%2F09%2F0977" target="_blank" >GA103/09/0977: Experimentální a numerické modelování turbulentního proudění s rozsáhlým odtržením</a><br>

Návaznosti

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

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název statě ve sborníku

17th International Conference Engineering Mechanics 2011

ISBN

978-80-87012-33-8

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

495-498

Název nakladatele

Ústav termomechaniky AVČR

Místo vydání

Svratka

Místo konání akce

Svratka

Datum konání akce

9. 5. 2011

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

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