Original title: Wind tunnel measurement of turbulent and advective scalar fluxes, case study on an intersection ventilation
Authors: Kukačka, Libor ; Nosek, Štěpán ; Kellnerová, Radka ; Jurčáková, Klára ; Jaňour, Zbyněk
Document type: Papers
Conference/Event: Experimental Fluid Mechanics 2011, Jičín (CZ), 2011-11-22 / 2011-11-25
Year: 2011
Language: eng
Abstract: The objective of this study is to determine processes of vertical ventilation above the X-shaped intersection in an idealised symmetric urban area in several approach flow directions. An experimental set-up for simultaneous measurement of the flow velocity and the tracer gas concentration was assembled. Vertical advective and turbulent fluxes of passive contaminant were computed from synchronised measured velocity and concentration signals in a regular grid placed at the roof top level above the studied intersection. Spatial distribution and contributions of the turbulent transport to ventilation of the area were determined.
Keywords: air pollution; atmospheric boundary layer; contaminant spreading; scalar fluxes; wind tunnel modelling
Project no.: CEZ:AV0Z20760514 (CEP)
Host item entry: Experimental Fluid Mechanics 2011, ISBN 978-80-7372-784-0
Note: Související webová stránka: www.kez.tul.cz

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0204652

Permalink: http://www.nusl.cz/ntk/nusl-81237


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