US EPA

2659125 

Journal Article 

ATMOSPHERIC BOUNDARY LAYER MODELLING AS MEAN VELOCITY PROFILE USED FOR WIND TUNNEL TESTS ON CONTAMINANT DISPERSION IN THE ATMOSPHERE 

Degeratu, M; Georgescu, AM; Bandoc, G; Alboiu, NI; Cosoiu, CI; Golumbeanu, M 

2013 

Yes 

Journal of Environmental Protection and Ecology
ISSN: 1311-5065 

14 

1 

22-28 

WOS:000317437400003 

Generally for the wind engineering phenomena and particularly for the gaseous contaminant dispersion in the atmosphere modelling in wind tunnels, the simulation of the atmospheric boundary layer mean velocity distribution corresponding to the studied area at the model scale must be ensured. The paper presents first the atmospheric boundary layer equations, the Ekman spiral model and a comparison of two of the laws that describe the mean velocity profile of the atmospheric boundary layer. These laws, namely the logarithmic law (the Prandtl law) and the power law, can be transposed at model scale in the test section of a boundary layer wind tunnel. In the performed tests, achieved in the boundary layer wind tunnel (BLWT 1), a scale transposition of the atmospheric boundary layer mean velocity profile corresponding to the power law was obtained. This law provides a description of the mean velocity profile on the entire thickness of the atmospheric boundary layer. The developed tests using BLWT 1 have successfully simulated the vertical mean velocity distribution for diverse land roughness, respectively for different Davenport exponent alpha values. 

atmospheric contaminant dispersion; logarithmic law; power law; boundary layer wind tunnel