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

Result code in 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>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

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

Original language description

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

Czech name

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

Czech description

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 thhemeasurements 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

Type

D - Article in proceedings

CEP classification

DI - Pollution and air control

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2004

Confidentiality

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

Article name in the collection

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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Number of pages

2

Pages from-to

501-502

Publisher name

University of Calgary

Place of publication

Banff, calgary,Canada

Event location

Banff

Event date

Oct 24, 2004

Type of event by nationality

CST - Celostátní akce

UT code for WoS article

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