Ventilation Processes in a Three-Dimensional Street Canyon

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F16%3A00458864" target="_blank" >RIV/61388998:_____/16:00458864 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1007/s10546-016-0132-2" target="_blank" >http://dx.doi.org/10.1007/s10546-016-0132-2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10546-016-0132-2" target="_blank" >10.1007/s10546-016-0132-2</a>

Result language

angličtina

Original language name

Ventilation Processes in a Three-Dimensional Street Canyon

Original language description

The ventilation processes in three different street canyons of variable roof geometry were investigated in a wind tunnel using a ground-level line source. A constant roof height was used in the first case, while a variable roof height along the leeward or windward walls was simulated in the two other cases. All street-canyon models were exposed to a neutrally stratified flow with two approaching wind directions, perpendicular and oblique. The relative pollutant removals and spatially-averaged concentrations within the canyons revealed that the model with constant roof height has higher re-emissions than models with variable roof heights. The nomenclature for the ventilation processes according to quadrant analysis of the pollutant flux was introduced. The venting of polluted air increased when the wind direction changed from perpendicular to oblique, irrespective of the studied canyon model. Strong correlations (>0.5) between coherent structures and ventilation processes were found at roof level, irrespective of the canyon model and wind direction.

Czech name

—

Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BK - Liquid mechanics

OECD FORD branch

—

Project

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

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

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

Name of the periodical

Boundary Layer Meteorology

ISSN

0006-8314

e-ISSN

—

Volume of the periodical

159

Issue of the periodical within the volume

2

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

26

Pages from-to

259-284

UT code for WoS article

000374666100005

EID of the result in the Scopus database

2-s2.0-84957027027