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ROLE OF INDIVIDUAL BUILDINGS IN SCALAR TRANSFER

SYSNO ASEP	0331558
Document Type	C - Proceedings Paper (int. conf.)
R&D Document Type	Conference Paper
Title	ROLE OF INDIVIDUAL BUILDINGS IN SCALAR TRANSFER
Title	Role individuálních budov v přenosu skaláru
Author(s)	Bezpalcová, Klára (UT-L)_{RID, ORCID} Ohba, M. (JP) Jaňour, Zbyněk (UT-L)_{RID, ORCID}
Source Title	Proceedings of the Conference on Physical Modelling of Flow and Dispersion Phenomena. - Rhode-St-Genése : von Karman Institute for Fluid Dynamics, 2009 / Beeck J. - ISBN 978-2-930389-42-7
Pages	e.1.1-e.1.8
Number of pages	8 s.
Action	PHYSMOD 2009
Event date	24.08.2009-26.08.2009
VEvent location	Rhode-St-Genése
Country	BE - Belgium
Event type	WRD
Language	eng - English
Country	BE - Belgium
Keywords	urban canopy ; vertical scalar transfer ; wind tunnel atmospheric boundary layer
Subject RIV	DG - Athmosphere Sciences, Meteorology
CEZ	AV0Z20760514 - UT-L (2005-2011)
Annotation	The vertical ventilation of a gaseous pollutant released at the street level to the relatively unobstructed flow above the urban canopy is the main interest of our study. Simultaneous measurement of passive tracer concentration and vertical wind component with high temporal resolution is very unique technique and allows us to directly derive the advective and turbulent vertical scalar transfer terms. Comparison of the measurements within 18 different arrangements of idealised urban canopies (with different packing densities, building layouts, and height variations) is shown. Both advective and turbulent vertical scalar transfer is enhanced in denser set-ups and set-ups with high variability of building heights. The individual buildings and their unique heights are important for the advective vertical transport and this phenomenon is stronger for denser set-ups. The turbulent vertical transport characteristics are mainly given by general urban roughness performance.
Workplace	Institute of Thermomechanics
Contact	Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823
Year of Publishing	2010

Number of the records: 1