Comparative Study of Experiment And Les on Street Canyon Dynamics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F14%3A00427473" target="_blank" >RIV/61388998:_____/14:00427473 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Comparative Study of Experiment And Les on Street Canyon Dynamics

Popis výsledku v původním jazyce

The paper deals with comparison between experimental data and numerical simulation concerning street canyon dynamics. Experimental data was obtained in the wind channel with Time-Resolved Particle Image Velocimetry (TR-PIV). By PIV, two components of velocity were measured in vertical plane at the axis of the channel. The almost identical boundary conditions were simulated by LES. The wind dynamics inside the street canyon was captured and then analysed by Fourier analysis, Wavelet analysis, Quadrant Reynolds decomposition, spatial and temporal correlation and Proper orthogonal decomposition (POD). These methods were consequently used for the mutual comparison between LES and experimental data was done. Some discrepancies were revealed in the time-meanvalues between LES and PIV. However the spectrum, momentum flux and especially POD yielded very similar results what suggests that dynamics in terms of variance was properly modelled by LES.

Název v anglickém jazyce

Comparative Study of Experiment And Les on Street Canyon Dynamics

Popis výsledku anglicky

The paper deals with comparison between experimental data and numerical simulation concerning street canyon dynamics. Experimental data was obtained in the wind channel with Time-Resolved Particle Image Velocimetry (TR-PIV). By PIV, two components of velocity were measured in vertical plane at the axis of the channel. The almost identical boundary conditions were simulated by LES. The wind dynamics inside the street canyon was captured and then analysed by Fourier analysis, Wavelet analysis, Quadrant Reynolds decomposition, spatial and temporal correlation and Proper orthogonal decomposition (POD). These methods were consequently used for the mutual comparison between LES and experimental data was done. Some discrepancies were revealed in the time-meanvalues between LES and PIV. However the spectrum, momentum flux and especially POD yielded very similar results what suggests that dynamics in terms of variance was properly modelled by LES.

Druh

O - Ostatní výsledky

CEP obor

DG - Vědy o atmosféře, meteorologie

OECD FORD obor

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Projekt

<a href="/cs/project/GAP101%2F12%2F1554" target="_blank" >GAP101/12/1554: Experimentální výzkum organizovaných struktur v turbulentní mezní vrstvě nad drsným povrchem s překážkami</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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