Počet záznamů: 1

Ventilation Processes in a Three-Dimensional Street Canyon

SYSNO ASEP	0458864
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Ventilation Processes in a Three-Dimensional Street Canyon
Tvůrce(i)	Nosek, Štěpán (UT-L)_{RID, ORCID} Kukačka, L. (CZ) Kellnerová, Radka (UT-L)_{RID, ORCID} Jurčáková, Klára (UT-L)_{RID, ORCID} Jaňour, Zbyněk (UT-L)_{RID, ORCID}
Zdroj.dok.	Boundary Layer Meteorology - ISSN 0006-8314 Roč. 159, č. 2 (2016), s. 259-284
Poč.str.	26 s.
Forma vydání	Tištěná - P
Jazyk dok.	eng - angličtina
Země vyd.	NL - Nizozemsko
Klíč. slova	Coherent structures ; line source ; pollution flux measurements ; street canyon ; wind tunnel
Vědní obor RIV	BK - Mechanika tekutin
CEP	GAP101/12/1554 GA ČR - Grantová agentura ČR
	GA15-18964S GA ČR - Grantová agentura ČR
Institucionální podpora	UT-L - RVO:61388998
UT WOS	000374666100005
EID SCOPUS	84957027027
DOI	10.1007/s10546-016-0132-2
Anotace	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.
Pracoviště	Ústav termomechaniky
Kontakt	Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823
Rok sběru	2017

Počet záznamů: 1