Near wall measurements for pedestrian comfort studies in wind tunnels

Abstract:

The urban environment is dynamic and is constantly changing. Therefore, a proper planning is required in order to guarantee individuals’ well-being. A useful tool to study the urban environment is the wind tunnel which allows, through scaled-model testing, the evaluation of pedestrian comfort and pollutant dispersion as well as the evaluation of wind action on structures. This paper is focused on the pedestrian-level comfort due to wind mechanical action on outdoor spaces. The main goal was to compare experimental techniques used with this purpose in IPT’s wind tunnel. The analyzed techniques and the obtained conclusion were: the sand erosion technique is useful when studying large flat areas from the qualitative point of view; hotwire anemometers are always useful, especially when gusts must be taken into account, although they can be highly intrusive ant time consuming; Irwin sensors, developed specifically for near-wall measurements concerning pedestrian comfort studies, must be carefully manufactured and calibrated but can be installed in a large number of points along the model floor.


Reference:
MARTINS, Gabriel Borelli; COSTA, André Barsaglini da; JABARDO, Paulo José Saiz; NADER, Gilder. Medição em túneis de vento da velocidade do ar próxima à parede para estudos de conforto de pedestres. Revista IPT: Tecnologia e Inovação, v.2, n.7, p.41-58, abr., 2018.


Access to the article on the newspaper website:
http://revista.ipt.br/index.php/revistaIPT/article/view/55/64

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