Porovnání různých modelů turbulence při řešení rychlostních polí v uličním kaňonu a porovnání s měřením

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F04%3APU55908" target="_blank" >RIV/00216305:26210/04:PU55908 - 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

COMPARISON OF DIFFERENT TURBULENCE MODELS APPLIED TO MODELLING OF AIRFLOW IN URBAN STREET CANYON AND COMPARISON WITH MEASUREMENTS

Popis výsledku v původním jazyce

The CFD code StarCD was used for airflow modeling in an urban street canyon. A numerical model of a calculated area involves not only the studied street canyon but also surrounding buildings. Series of calculations were done for three different wind directions, namely longitudinal, perpendicular and oblique wind direction. The wind direction orientation is related to the longitudinal axis of the studied street canyon. Velocity fields were solved for wind velocities 3 m/s and 6 m/s as obtained from theemeasurements at height 25 m above ground level. In total, three different turbulence models were tested. As a first one, K- Hi-Re model was used as the most common model used in CFD. As a second, K- RNG model of turbulence was taken into account. From different studies it follows that this model provides good results of air flow in urban areas. Third, the K- Lo-Re model of turbulence (Lien, F.S., Chen, W.L., and Leschziner, M.A., 1996) was used. Three different wind directions and two di

Název v anglickém jazyce

COMPARISON OF DIFFERENT TURBULENCE MODELS APPLIED TO MODELLING OF AIRFLOW IN URBAN STREET CANYON AND COMPARISON WITH MEASUREMENTS

Popis výsledku anglicky

The CFD code StarCD was used for airflow modeling in an urban street canyon. A numerical model of a calculated area involves not only the studied street canyon but also surrounding buildings. Series of calculations were done for three different wind directions, namely longitudinal, perpendicular and oblique wind direction. The wind direction orientation is related to the longitudinal axis of the studied street canyon. Velocity fields were solved for wind velocities 3 m/s and 6 m/s as obtained from theemeasurements at height 25 m above ground level. In total, three different turbulence models were tested. As a first one, K- Hi-Re model was used as the most common model used in CFD. As a second, K- RNG model of turbulence was taken into account. From different studies it follows that this model provides good results of air flow in urban areas. Third, the K- Lo-Re model of turbulence (Lien, F.S., Chen, W.L., and Leschziner, M.A., 1996) was used. Three different wind directions and two di

Druh

D - Stať ve sborníku

CEP obor

DI - Znečištění a kontrola vzduchu

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2004

Kód důvěrnosti údajů

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

Název statě ve sborníku

sborník - 27th International Technical Meeting on Air Pollution Modelling and its Application

ISBN

0-230-94659-3

ISSN

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e-ISSN

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Počet stran výsledku

2

Strana od-do

501-502

Název nakladatele

University of Calgary

Místo vydání

Banff, calgary,Canada

Místo konání akce

Banff

Datum konání akce

24. 10. 2004

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

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