Detailed analysis of POD method applied on turbulent flow

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10132835" target="_blank" >RIV/00216208:11320/12:10132835 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.epj-conferences.org/index.php?option=com_article&access=doi&doi=10.1051/epjconf/20122501038&Itemid=129" target="_blank" >http://www.epj-conferences.org/index.php?option=com_article&access=doi&doi=10.1051/epjconf/20122501038&Itemid=129</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjconf/20122501038" target="_blank" >10.1051/epjconf/20122501038</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Detailed analysis of POD method applied on turbulent flow

Popis výsledku v původním jazyce

Proper orthogonal decomposition (POD) of a very turbulent flow inside a street canyon is performed. The energy contribution of each mode is obtained. Also, physical meaning of the POD result is clarified. Particular modes of POD are assigned to the particular flow events like a sweep event, a vortex behind a roof or a vortex at the bottom of a street. Test of POD sensitivity to the acquisition time of data records is done. Test with decreasing sample frequency is also executed. Further, interpolation ofPOD expansion coefficient is performed in order to test possible increase in sample frequency and get new information about the flow from the POD analysis. We tested a linear and a spline type of the interpolation and the linear one carried out a slightly better result.

Název v anglickém jazyce

Detailed analysis of POD method applied on turbulent flow

Popis výsledku anglicky

Proper orthogonal decomposition (POD) of a very turbulent flow inside a street canyon is performed. The energy contribution of each mode is obtained. Also, physical meaning of the POD result is clarified. Particular modes of POD are assigned to the particular flow events like a sweep event, a vortex behind a roof or a vortex at the bottom of a street. Test of POD sensitivity to the acquisition time of data records is done. Test with decreasing sample frequency is also executed. Further, interpolation ofPOD expansion coefficient is performed in order to test possible increase in sample frequency and get new information about the flow from the POD analysis. We tested a linear and a spline type of the interpolation and the linear one carried out a slightly better result.

Druh

O - Ostatní výsledky

CEP obor

BK - Mechanika tekutin

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

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