||Turbulent diffusion behind vehicles : experimentally determined influence of vortex air in vehicle wake /
Thompson, Roger S. ;
Eskridge, R. E.
||Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
|| U.S. Environmental Protection Agency, Atmospheric Sciences Research Laboratory,
Air pollution ;
Motor vehicles ;
Exhaust gases ;
Exhaust emissions ;
Wind tunnels ;
Automobile exhaust ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||8 pages ; 28 cm
||The wake of a moving vehicle was stimulated using a wind tunnel with a moving floor. The vehicle models, both scale and block-shaped, were held in a fixed position while the floor moved at the upstream air speed. This simulates an automobile traveling on a straight highway in still ambient air. Vertical and lateral profiles of mean and fluctuating velocities and mean tracer concentration were obtained. Profiles were taken at distances of 15-60 model heights downstream. Two exhaust source positions were used: at the center of the rear of the vehicle and on the side just behind the rear wheel. It was found that the scale vehicles induce a pair of vortices in the wake that modify the velocity and concentration patterns in a minor way from that of the block car.
||"Journal article." "EPA/600/J-87/479." "Published in Atmospheric Environment, vol. 21, no. 10 pp. 2091-2097, 1987." Microfiche.
||Research Triangle Park, NC :
||Pub. in Atmospheric Environment, v21 n10 p2091-2097 1987. See also PB87-208690.
|Corporate Au Added Ent
||United States. ; Atmospheric Sciences Research Laboratory.
||Experimentally determined influence of vortex air in vehicle wake.
|PUB Date Free Form
||PC A02/MF A01
|OCLC Time Stamp
|OCLC Rec Leader
||01278nam 2200289Ka 45020