Proper Orthogonal Decomposition of Turbulent Flow above Urban Area

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F11%3A00363627" target="_blank" >RIV/61388998:_____/11:00363627 - 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
Proper Orthogonal Decomposition of Turbulent Flow above Urban Area
Original language description
This contribution describes the character of turbulent flow generated above series of street canyons in wind-channel. Main concern is to clarify how intermittent dynamics of the flow determines the ventilation process inside the canyon. Since geometry ofbuilding around street canyon significantly affects the flow regime, two shapes of building are studied and comparison of these two regimes is done. During experiment, velocity data are measured using PIV with high-repetition rate. Over than three thousand snapshots of instantaneous velocity are then analysed by Proper Orthogonal Decomposition (POD). This method reveals the measure of coherence of the flow and decomposes the individual snapshots into dynamics modes. For example, the first mode in shearlayer (localised at the roof level) contains almost 55% of global turbulent kinetic energy, what is an in
Czech name
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Czech description
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Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Conference Topical Problems of Fluid Mechanics 2011
ISBN
978-80-87012-32-1
ISSN
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e-ISSN
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Number of pages
2
Pages from-to
55-56
Publisher name
Institute of Thermomechanics AS CR, v. v. i.
Place of publication
Prague
Event location
Praha
Event date
Feb 16, 2011
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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