Sand erosion technique applied to wind resource assessment

A review on the study of urban wind at the pedestrian level around buildings

“…Cons: Very expensive, sometimes dangerous, laser light shielding and reflection from buildings, not suitable for the cluster of buildings. Erosion Technique [12,34,[42][43][44][45] Pros: Area technique, results are comparable to HWA for high wind speed [12]. For high turbulent flow, this technique agrees well with PIV measurements of mean wind speed [42].…”

“…Infrared thermography [10,32,37] Pros: Non-intrusive Area technique, RMS, peak and spectrum value can be measured [37] Cons: Due to convection wind flow gets disturbed, sturdy and non-standard experimental set-up. No perfect correlation is obtained for temperature drop and wind speed [10] PIV [41,42] Pros: Non-intrusive area technique, high spatial resolution and directional sensitivity.…”

Flow and Dispersion Phenomena in a Simplified Urban Square

“…Since then, the method was used in a number of studies: [14] investigated snow erosion and deposition around an Antarctic base in complex terrain. [15] applied the method for wind resource assessment in a mountain area. Several researchers have shown that the entrainment of sand particles is a complex phenomenon, not only influenced by the average wind speed above the surface, but also by the gustiness of wind.…”

LES over RANS in building simulation for outdoor and indoor applications: A foregone conclusion?

“…These difficulties were directly linked to limitations in physical modeling and in computational requirements at those times, but many of those limitations are still to some extent present today. For indoor airflow, the challenges are represented by (1) the potentially large variations in turbulence levels with can include low-Reynolds effects and relaminarization of the flow; (2) the wide range of spatial scales from the length scale of the room to the details of inlet and outlet openings Salizzoni et al 2009;Tsang et al 2012;Conan et al 2012;Tominaga andBlocken 2015, 2016;Ricci et al 2017a), water channel measurements (e.g. Princevac 2010;Pournazeri et al 2012;Cruz-Salas et al 2014;Neophytou et al 2014;Karra et al 2017) or water tank experiments (e.g.…”