PIV measurement of turbulent flow within a street canyon: detection of coherent motion

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F11%3A00363538" target="_blank" >RIV/61388998:_____/11:00363538 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

PIV measurement of turbulent flow within a street canyon: detection of coherent motion

Original language description

2-dimensional PIV measurement is performed in wind-channel with model of street canyons. Two geometries - flat and pitched roof - are tested in terms of flow dynamics. Velocity vector fields in vertical planes within canyons are analysed by Quadrant technique, Wavelet analysis and Proper Orthogonal Decomposition (POD). Wavelet analysis with Morlet function is applied on velocity data. Physical interpretation was done with help of PIV records. Most energetic events in the flow can be assigned to the sweep and ejection events. Vortices are not rare, however they do not bring energy in a quasi-periodic manner to be nicely detected by Morlet wavelet. POD is applied either on velocity data either on vorticity field. Rather a significant distinction betweendynamics above two shapes of roof is found out.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

DG - Atmospheric sciences, meteorology

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2011

Confidentiality

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

Article name in the collection

13th International Conference on Wind Engineerin

ISBN

978-1-907132-33-9

ISSN

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e-ISSN

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Number of pages

8

Pages from-to

1-8

Publisher name

Multi-Science Publishing Co Ltd

Place of publication

Amsterdam

Event location

Amsterdam

Event date

Jul 10, 2011

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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