Spatio-Temporal Description of the Swirling Flow in Hydraulic Turbine

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F15%3APU114348" target="_blank" >RIV/00216305:26210/15:PU114348 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/s35147-015-0511-5" target="_blank" >http://dx.doi.org/10.1007/s35147-015-0511-5</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s35147-015-0511-5" target="_blank" >10.1007/s35147-015-0511-5</a>

Result language
angličtina
Original language name
Spatio-Temporal Description of the Swirling Flow in Hydraulic Turbine
Original language description
Highly swirling flow leaves runner of the hydraulic turbine, which is operated off the best efficiency point. Instability of the swirling flow results in so called vortex rope. Rotating vortex rope is a source of pressure pulsations, causes structural loads, vibrations and noise. Proper orthogonal decomposition (POD) provides a spatio-temporal description of the draft tube swirling flow and proves that only a very limited number of the flow eigenmodes is necessary to describe the flow dynamics. Construction of the reduced order model (ROM), which is derived by projection of Navier-Stokes equation onto POD basis forms a suitable state equation for the draft tube flow control. Paper presents review of POD application to draft tube flows and proposal of extension to ROM and closed loop flow control.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20704 - Energy and fuels

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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