1(26) 2014

Article	WIND PATTERN FEATURES IN TYPICAL CITY MODELS
Authors	M. Myagkov, Moscow Institute of Architecture (State Academy), Moscow, Russia L. Alekseeva, Moscow State University, Moscow, Russia
Abstract	Wind conditions in urban environments are important for a number of reasons. Outdoor aeration, interior natural ventilation, bioclimatic comfort and air pollutants dispersion are most important. That is why basic city morphology options should be found yet at the urban planning stage with consideration of local wind climate. This paper is intended for establishing a range of urban planning decisions, based on the three typical city models – «city-cup», «city-hill» and «city-plateau» - affecting urban wind climate under high, moderate and low wind velocity conditions. These three case studies illustrate the possibilities and limitations of applying urban wind climate control measures to improve living conditions. To validate typical models in different wind climates simulations with the use of ENVI-met software suite were carried out. Comparison of derived wind field statistics allows to reveal the optimal town-planning decisions for various wind climates. The knowledge obtained from this analysis provides planners and architects a way to consider wind protection options that should be applied in climate-conscious design.
Keywords:	climate-sensitive design; town planning; wind conditions; numerical simulation of microclimate; ENVI-met software
	Article (RUS)
References	Arhitekturnaja fizika: Uchebnik dlja vuzov [The Architectural Physics: Textbook for High Schools]. Moscow, 2005, 448 p. Myagkov M.S., Gubernskij Ju.D., Konova L.I., Lickevich V.K. Gorod, arhitektura, chelovek i klimat [City, Architecture, Man and Climate] Moscow, 2007, 344 p. SP 42.13330.2011 Gradostroitel'stvo. Planirovka i zastrojka gorodskih i sel'skih poselenij (Aktualizirovannaya redakcija SNiP 2.07.01-89*) [Building Code: Urban Planning. Planning and Building of Urban and Rural Settlements (the updated issue of SNiP 2.07.01-89*]. Minregion Rossii, 2010. Grimmond C. S. B. Progress in measuring and observing the urban atmosphereю – Theoretical and Applied Climatology, 2006, Vol. 84, no.1-3, pp. 3-22. Bruse M. Die vorliegende Dokumentation beschreibt die aktuelle Version von ENVI-met inklusive der vorgenommenen nderungen. (Einzelne Abschnitte können hierbei noch von der aktuellen Version abweichen), 2004. Available at: http://www.envi-met.com/documents/Envimet30.PDF MGSN 1.04-2005 «Vremennye normy i pravila proektirovanija planirovki i zastrojki uchastkov territorii vysotnyh zdanij-kompleksov, vysotnyh gradostroitel'nyh kompleksov v gorode Moskve» [Provisional Norms and Rules of Designing and Building of the Sites of High-rise Buildings-complexes, High-rise Urban Complexes in the City of Moscow], 2005. Morris A.E.J. History of Urban Form Before the Industrial Revolution (3-d edition). Harlow: England Pearson Education Ltd., 1994, 444 p. Rizka A. A., Henze G. P. Improved airflow around multiple rows of buildings in hot arid climates. - Energy and Buildings, 2010, Vol. 42(10), pp. 1711-1718. Louka P., Belcher S. E., Harrison R. G. Modified street canyon flow. J. of Wind Engineering and Industrial Aerodynamics, 1998, no. 74-6, pp. 485-493. Allegrini J., Dorer V., Carmeliet J. Wind tunnel measurements of buoyant flows in street canyons. Building and Environment, 2013, no 59, pp. 315-326. Hebbert M., Janković, V., Webb, B. City Weathers: meteorology and urban design 1950- 2010. University of Manchester, Manchester Architecture Research Centre [Сетевой ресурс]. Available at: http://www.sed.manchester.ac.uk/architecture/research/csud/workshop/2011CityWeathers. pdf Oke T.R. Boundary layer climates. London: Routledge, 1999, 435 p. Miller C.A., Davenport A.G. Guidelines for the calculation of wind speed-ups in complex terrain. J. of Wind Engineering and Industrial Aerodynamics, 1998, Vol. 74−76, pp. 189−197. Hang J., Sandberg M., Li Y. Effect of urban morphology on wind condition in idealized city models. - Atmospheric Environment, 2009, Vol. 43(4), pp. 869-878.