Construction of a reduced-order dynamic model for prospective swirling flow control in hydraulic turbine draft tube

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F19%3APU131780" target="_blank" >RIV/00216305:26210/19:PU131780 - isvavai.cz</a>

Výsledek na webu

<a href="https://iopscience.iop.org/article/10.1088/1755-1315/240/2/022065" target="_blank" >https://iopscience.iop.org/article/10.1088/1755-1315/240/2/022065</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1755-1315/240/2/022065" target="_blank" >10.1088/1755-1315/240/2/022065</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Construction of a reduced-order dynamic model for prospective swirling flow control in hydraulic turbine draft tube

Popis výsledku v původním jazyce

Vortex rope in Francis turbine draft tubes poses serious problems. Emphasis on operation of the turbines in wide operating range, quite far from the design point, is a challenge for both the turbine designers and power plant owners. While flow control becomes popular in aircraft and automotive industry, it is still feared in turbomachinery. Present paper brings results of investigations aimed on construction of a reduced order model, which describes dynamics of the swirling flow in the draft tube. First step is assesing the dominant modes of the flow, second step is projection of those modes onto a transport equation. Final set of ordinary differential equations is a relatively simple model of the time evolution of the flow dynamics, which is basis for the flow control aiming on mitigation of the instabilities (e.g. vortex rope).

Název v anglickém jazyce

Construction of a reduced-order dynamic model for prospective swirling flow control in hydraulic turbine draft tube

Popis výsledku anglicky

Vortex rope in Francis turbine draft tubes poses serious problems. Emphasis on operation of the turbines in wide operating range, quite far from the design point, is a challenge for both the turbine designers and power plant owners. While flow control becomes popular in aircraft and automotive industry, it is still feared in turbomachinery. Present paper brings results of investigations aimed on construction of a reduced order model, which describes dynamics of the swirling flow in the draft tube. First step is assesing the dominant modes of the flow, second step is projection of those modes onto a transport equation. Final set of ordinary differential equations is a relatively simple model of the time evolution of the flow dynamics, which is basis for the flow control aiming on mitigation of the instabilities (e.g. vortex rope).

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

<a href="/cs/project/GA17-01088S" target="_blank" >GA17-01088S: Prostorová nestabilita smykové vrstvy při nepříznivém gradientu tlaku</a><br>

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

IOP Conference Series: Earth and Environmental Science

ISBN

—

ISSN

1755-1315

e-ISSN

—

Počet stran výsledku

10

Strana od-do

1-10

Název nakladatele

Neuveden

Místo vydání

neuveden

Místo konání akce

Kyoto

Datum konání akce

17. 9. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000560282600065