Decomposition of the swirling flow field downstream of Francis turbine runner

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F12%3APU102029" target="_blank" >RIV/00216305:26210/12:PU102029 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1088/1755-1315/15/6/062008" target="_blank" >http://dx.doi.org/10.1088/1755-1315/15/6/062008</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1755-1315/15/6/062008" target="_blank" >10.1088/1755-1315/15/6/062008</a>

Result language

angličtina

Original language name

Decomposition of the swirling flow field downstream of Francis turbine runner

Original language description

Practical application of proper orthogonal decomposition (POD) is presented. Spatio-temporal behaviour of the coherent vortical structures in the draft tube of hydraulic turbine is studied for two partial load operating points. POD enables to identify the eigen modes, which compose the flow field and rank the modes according to their energy. Swirling flow fields are decomposed, which provides information about their streamwise and crosswise development and the energy transfer among modes. Presented methodology also assigns frequencies to the particular modes, which helps to identify the spectral properties of the flow with concrete mode shapes. Thus POD offers a complementary view to current time domain simulations or measurements.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JE - Non-nuclear power engineering, energy consumption and utilization

OECD FORD branch

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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

2012

Confidentiality

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

Article name in the collection

IOP Conference Series-Earth and Environmental Science

ISBN

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ISSN

1755-1315

e-ISSN

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Number of pages

8

Pages from-to

1-8

Publisher name

IOP Publishing Ltd.

Place of publication

Neuveden

Event location

Beijing

Event date

Aug 19, 2012

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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