Wakes and secondary structures past stator wheel in test turbine VT-400 observed by PIV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F24%3A00582351" target="_blank" >RIV/61388998:_____/24:00582351 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/49777513:23210/24:43971908

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0997754624000165?dgcid=rss_sd_all" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0997754624000165?dgcid=rss_sd_all</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.euromechflu.2024.01.008" target="_blank" >10.1016/j.euromechflu.2024.01.008</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Wakes and secondary structures past stator wheel in test turbine VT-400 observed by PIV

Popis výsledku v původním jazyce

Flow inside the axial test turbine VT-400 is measured by using a standard methodology of Particle Image Velocimetry (PIV). The studied area lies between the stator and rotor wheel in meridional plane. This area covers both: the regular flow near hub and the endwall secondary structures as well. Regular structure of wakes and jets past stator blades is observed in terms of mean velocities and turbulence intensity. The fluctuations are close to isotropy and the energy distribution across length-scales exhibits almost Kolmogorov scaling. Near the hub, we observe secondary vortices. Despite the positive radial ejections in that regions, these secondary vortices drift towards the hub, they dissipate energy and circulation and their core grows in size. © 2024 The Authors

Název v anglickém jazyce

Wakes and secondary structures past stator wheel in test turbine VT-400 observed by PIV

Popis výsledku anglicky

Flow inside the axial test turbine VT-400 is measured by using a standard methodology of Particle Image Velocimetry (PIV). The studied area lies between the stator and rotor wheel in meridional plane. This area covers both: the regular flow near hub and the endwall secondary structures as well. Regular structure of wakes and jets past stator blades is observed in terms of mean velocities and turbulence intensity. The fluctuations are close to isotropy and the energy distribution across length-scales exhibits almost Kolmogorov scaling. Near the hub, we observe secondary vortices. Despite the positive radial ejections in that regions, these secondary vortices drift towards the hub, they dissipate energy and circulation and their core grows in size. © 2024 The Authors

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20302 - Applied mechanics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

European Journal of Mechanics B-Fluids

ISSN

0997-7546

e-ISSN

1873-7390

Svazek periodika

105

Číslo periodika v rámci svazku

May-June

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

151-163

Kód UT WoS článku

001172246600001

EID výsledku v databázi Scopus

2-s2.0-85183457748