Dimensional arguments are used to predict plume rise for buoyant plumes in both stable and neutral air, for both calm and windy conditions. Dominant terms are assumed to be windpseed ū, “buoyancy flux” F (proportional to heat efflux), and a stability parameter s (proportional to potential temperature gradient). Observations presented support the dimensional analysis predictions, except that for final rise in a neutral atmosphere they are adeauate only for a conservative estimate of rise. The method is extended to predict maximum ground concentration of effluent gases in the worst situations {windy neutral and fumigation) for open country, valleys, and “canyons.” These predictions are compared ivith limited observations.
[1]
G. Csanady.
Some observations on smoke plumes.
,
1961,
International journal of air and water pollution.
[2]
G. Batchelor,et al.
Heat convection and buoyancy effects in fluids
,
1954
.
[4]
Stewart Ng,et al.
THE ATMOSPHERIC DIFFUSION OF GASES DISCHARGED FROM THE CHIMNEY OF THE HARWELL REACTOR BEPO
,
1958
.
[5]
C. H. Bosanquet,et al.
Dust Deposition from Chimney Stacks
,
1950
.
[6]
T. V. Crawford,et al.
Observations of Buoyant Plumes in Calm Stably Stratified Air
,
1962
.
[7]
H. Langhaar.
Dimensional analysis and theory of models
,
1951
.