Numerické modelování turbulentního proudění kolem třírozměrného schodu

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F06%3A02122060" target="_blank" >RIV/68407700:21220/06:02122060 - 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

Numerical Modelling of Turbulent Flow over Three Dimensional Backward Facing Step

Popis výsledku v původním jazyce

The work deals with numerical modelling of 3D steady turbulent flow over backward facing step in a channel of rectangular cross-section. Two geometries with different boundary conditions and Reynolds numbers are computed. The mathematical model is basedon Reynolds averaged Navier-Stokes equations for incompressible fluid. The turbulence models are eddy viscosity (SST) and explicit algebraic Reynolds stress model (EARSM). The Navier-Stokes equations are solved by an implicit artificial compressibility method with higher order upwind dicretization for convective term. The influence of constitutive relation for Reynolds stress is observed. The differences caused by turbulence modeling are apparent already in the inlet straight channel in the form of corner secondary vortices captured only by EARSM model. The vortical structures downstream of the step were observed as well. The results are compared with measurements.

Název v anglickém jazyce

Numerical Modelling of Turbulent Flow over Three Dimensional Backward Facing Step

Popis výsledku anglicky

The work deals with numerical modelling of 3D steady turbulent flow over backward facing step in a channel of rectangular cross-section. Two geometries with different boundary conditions and Reynolds numbers are computed. The mathematical model is basedon Reynolds averaged Navier-Stokes equations for incompressible fluid. The turbulence models are eddy viscosity (SST) and explicit algebraic Reynolds stress model (EARSM). The Navier-Stokes equations are solved by an implicit artificial compressibility method with higher order upwind dicretization for convective term. The influence of constitutive relation for Reynolds stress is observed. The differences caused by turbulence modeling are apparent already in the inlet straight channel in the form of corner secondary vortices captured only by EARSM model. The vortical structures downstream of the step were observed as well. The results are compared with measurements.

Druh

A - Audiovizuální tvorba

CEP obor

BA - Obecná matematika

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2006

Kód důvěrnosti údajů

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

ISBN

963-420-872-X

Místo vydání

Budapest

Název nakladatele resp. objednatele

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Verze

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Identifikační číslo nosiče

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