A simple model for spatially-averaged wind profiles within and above an urban canopy (Articolo in rivista)

Type
Label
  • A simple model for spatially-averaged wind profiles within and above an urban canopy (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1007/s10546-007-9250-1 (literal)
Alternative label
  • Silvana Di Sabatino; Efisio Solazzo; Paolo Paradisi; Rex Britter (2008)
    A simple model for spatially-averaged wind profiles within and above an urban canopy
    in Boundary-layer meteorology (Dordrecht. Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Silvana Di Sabatino; Efisio Solazzo; Paolo Paradisi; Rex Britter (literal)
Pagina inizio
  • 131 (literal)
Pagina fine
  • 151 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.springerlink.com/content/18728m6ur654v124/ (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 127 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 21 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 1 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
  • Google Scholar (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Dipartimento di Scienza dei Materiali, Laboratorio di Climatologia e Meteorologia, University of Salento, Lecce, Italy Division of Environmental Health & Risk Management, School of Geography, Earth & Environmental Sciences, University of Birmingham, Birmingham, UK Istituto di Scienze dell'Atmosfera e del Clima (ISAC-CNR), Lecce Unit, Lecce, Italy Engineering Department, University of Cambridge, Cambridge, UK (literal)
Titolo
  • A simple model for spatially-averaged wind profiles within and above an urban canopy (literal)
Abstract
  • This paper deals with the modelling of the flow in the urban canopy layer. It critically reviews a well-known formula for the spatially-averaged wind profile, originally proposed by Cionco in 1965, and provides a new interpretation for it. This opens up a number of new applications for modelling mean wind flow over the neighbourhood scale. The model is based on a balance equation between the obstacle drag force and the local shear stress as proposed by Cionco for a vegetative canopy. The buildings within the canopy are represented as a canopy element drag formulated in terms of morphological parameters such as ?f and ?p (the ratios of plan area and frontal area of buildings to the lot area). These parameters can be obtained from the analysis of urban digital elevation models. The shear stress is parameterised using a mixing length approach. Spatially-averaged velocity profiles for different values of building packing density corresponding to different flow regimes are obtained and analysed. The computed solutions are compared with published data from wind tunnel and water-tunnel experiments over arrays of cubes. The model is used to estimate the spatially-averaged velocity profile within and above neighbourhood areas of real cities by using vertical profiles of ?f . (literal)
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