WSL Institute for Snow and Avalanche Research SLF, Flueelastr. 11, 7260 Davos, Switzerland.
Environ Pollut. 2011 Aug-Sep;159(8-9):2094-9. doi: 10.1016/j.envpol.2010.11.012. Epub 2010 Dec 4.
A new vegetation modeling concept for Building and Environmental Aerodynamics wind tunnel investigations was developed. The modeling concept is based on fluid dynamical similarity aspects and allows the small-scale modeling of various kinds of vegetation, e.g. field crops, shrubs, hedges, single trees and forest stands. The applicability of the modeling concept was validated in wind tunnel pollutant dispersion studies. Avenue trees in urban street canyons were modeled and their implications on traffic pollutant dispersion were investigated. The dispersion experiments proved the modeling concept to be practicable for wind tunnel studies and suggested to provide reliable concentration results. Unfavorable effects of trees on pollutant dispersion and natural ventilation in street canyons were revealed. Increased traffic pollutant concentrations were found in comparison to the tree-free reference case.
开发了一种用于建筑物和环境空气动力学风洞研究的新植被建模概念。该建模概念基于流体动力学相似性方面，允许对各种植被进行小规模建模，例如农作物、灌木、树篱、单棵树和森林。该建模概念的适用性已在风洞污染物扩散研究中得到验证。对城市街道峡谷中的林荫树进行了建模，并研究了它们对交通污染物扩散的影响。扩散实验证明该建模概念适用于风洞研究，并提供了可靠的浓度结果。研究揭示了树木对峡谷中污染物扩散和自然通风的不利影响。与无树参考案例相比，发现交通污染物浓度增加。
