On the modelling turbulent transition in turbine cascades with flow separation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F19%3A00503135" target="_blank" >RIV/61388998:_____/19:00503135 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/19:00349595

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0045793019300064?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0045793019300064?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.compfluid.2019.01.008" target="_blank" >10.1016/j.compfluid.2019.01.008</a>

Jazyk výsledku

angličtina

Název v původním jazyce

On the modelling turbulent transition in turbine cascades with flow separation

Popis výsledku v původním jazyce

The work discusses performance, modification and implementation details of three intermittency based transition models. The intermittency is applied in the SST eddy viscosity turbulence model and in an explicit algebraic Reynolds stress model (EARSM). Experimental results of transonic flows through turbine cascades at different Reynolds numbers are used as test cases, where the interaction of shock wave with laminar or turbulent boundary layer can be distinguished and reproduced in simulations. Of the transition models tested, only the criteria based (gamma-zeta model captures well the influence of Reynolds number on the transition. The criterion for transition on separation bubble has been re-formulated so that the model is local in stream-wise direction and applicable also in 3D flows. The model is still non-local in wall- normal direction but this is found acceptable considering its performance and the fact that its evaluation is made fully automatic in the framework of structured multi-block solver.

Název v anglickém jazyce

On the modelling turbulent transition in turbine cascades with flow separation

Popis výsledku anglicky

The work discusses performance, modification and implementation details of three intermittency based transition models. The intermittency is applied in the SST eddy viscosity turbulence model and in an explicit algebraic Reynolds stress model (EARSM). Experimental results of transonic flows through turbine cascades at different Reynolds numbers are used as test cases, where the interaction of shock wave with laminar or turbulent boundary layer can be distinguished and reproduced in simulations. Of the transition models tested, only the criteria based (gamma-zeta model captures well the influence of Reynolds number on the transition. The criterion for transition on separation bubble has been re-formulated so that the model is local in stream-wise direction and applicable also in 3D flows. The model is still non-local in wall- normal direction but this is found acceptable considering its performance and the fact that its evaluation is made fully automatic in the framework of structured multi-block solver.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20302 - Applied mechanics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Computers & Fluids

ISSN

0045-7930

e-ISSN

—

Svazek periodika

181

Číslo periodika v rámci svazku

March

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

160-172

Kód UT WoS článku

000466824800012

EID výsledku v databázi Scopus

2-s2.0-85060326345