CB Christof Gromke

TL;DR: In this paper, the influence of tree planting with different tree crown porosity was investigated and the results obtained in this work by combining wind tunnel experiments and CFD based simulations suggest ways to obtain quantitative information for assessment, planning and implementation of exposure mitigation using trees in urban street canyons.

TL;DR: In this paper, an idealized model of an urban street canyon with one row of trees arranged along the center axis was performed in an atmospheric boundary layer wind tunnel and the approach flow was directed perpendicular to the street axis, where a line source embedded in the bottom of the street was used to release tracer gas for the simulation of traffic exhaust emissions.

TL;DR: The investigations carried out in this work allowed us to set up an appropriate CFD modelling methodology for the study of the aerodynamic effects of tree planting in street canyons, and the results obtained can be used by city planners for the design of tree plantings in the urban environment with regard to air quality issues.

TL;DR: In this article, the aerodynamic effects of trees on local scale flow and pollutant concentration in idealized street canyon configurations by means of laboratory experiments and Computational Fluid Dynamics (CFD).

TL;DR: In this paper, the authors performed wind-tunnel studies of dispersion processes of traffic exhaust in urban street canyons with tree planting and tracer gas concentrations using electron capture detection (ECD) and flow fields using laser Doppler velocimetry (LDV) were measured.