Building and Environment(英国)

http://www.sciencedirect.com/science/journal/03601323/83Volume 83,Pages 1-188(January 2015)(1)CFD analysis of transpirational cooling by vegetation:Case study for specific meteorological conditions during a heat wave in Arnhem,Netherlands,P11-26,by

Abstract： The transpirational cooling of vegetation as a measure to mitigate outdoor air temperatures was investigated for a street canyon in the city center of Arnhem, the Netherlands for the meteorological conditions of an afternoon hour on a hot summer day during a heat wave with wind of speed 5.1 m/s at 10 m above ground and direction along the canyon. Computational Fluid Dynamics （CFD） simulations with locally applied vegetation in the street, i.e. avenue-trees, fhcade greening, roof greening and all three combined, were performed. The 3D steady-state Reynolds-averaged Navier-Stokes （RANS） equations were closed by the realizable k-ε turbulence model extended with source and sink terms to represent the effects of vegetation on air flow.