[Zurück]

S. Glawischnig, K. Hammerberg, M. Vuckovic, K. Kiesel, A. Mahdavi:
"A case study of geometry-based automated calculation of microclimatic attributes";
Vortrag: ECPPM 2014 eWork and eBusiness in Architecture, Engineering and Construction, Wien, Österreich; 17.09.2014 - 19.09.2014; in: "Proceedings of the 10th European Conference on Product and Process Modelling (ECPPM2014), Vienna, Austria, 17-19 September 2014", A. Mahdavi, B. Martens, R.J. Scherer (Hrg.); Taylor & Francis - Balkema, 1/1/Boca Raton|London|New York|Leiden (2014), ISBN: 978-1-138-02710-7; S. 231 - 236.

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The microclimate varies significantly within a city depending on factors such as presence, distribution
and density of buildings, green areas, water bodies, etc. Therefore detailed information on the urban
microclimate is needed to reliably predict the energy performance of buildings as well as the outdoor thermal
comfort in urban spaces. Urban scale microclimatic simulation requires complex and time consuming numeric
calculations (e.g. computational fluid dynamics). Therefore, simpler methods to describe and estimate climate
on an urban scale are needed. In order to assess the urban climate in general and the urban heat island phenomena
in particular a variety of data streams with regard to the urban context must be obtained. The present
contribution introduces a collection of methods to assess geometric microclimatic attributes of urban units of
observation in Vienna. The introduced framework contains algorithms for the calculation of (i) sky view factor,
(ii) aspect ratio, (iii) pervious and impervious surfaces, (iv) built and unbuilt area fraction, (v) mean building
compactness, (vi) built surface fraction.