Abstract:
Sand erosion can be an useful technique applied in wind tunnel studies of pedestrian-level wind comfort, heat islands and contaminant dispersion in urban environment. The technique generates a large amount of images which in turns can complicate the analysis as well as the presentation to policymakers. Image processing can help with that, by creating clearer color maps and animations. A specific image processing workflow was included to the new VisualEFM Julia package to simplify the extraction of sand erosion patterns from wind tunnel tests. To develop the package a 1:500 scaled model of an urban area in São Paulo was tested in the Atmospheric Boundary Layer Wind Tunnel of the Institute for Technological Research (IPT). The procedure adopted was able to automatically extract the erosion patterns and proved to be very useful for wind tunnel studies involving the ventilation in urban environments.
Referência:
MARTINS, Gabriel Borelli; KLEINE, Felipe Augusto Frazão. The Visulefm.JL package for wind tunnel studies of pedestrian-level wind using sand erosion technique. In: INTERNATIONAL CONGRESS OF MECHANICAL ENGINEERING, 27., 2023, Florianópolis. Lecture… 17 slides.
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