A tracer approach to investigating instantaneous plume diffusion and turbulence
Conference
·
OSTI ID:422884
- Univ. of Montana, Butte, MT (United States). Environmental Engineering Dept.
- Washington State Univ., Pullman, WA (United States)
Downwind of a continuous point source, plume concentrations fluctuate instantaneously as meteorological conditions change in time. Small-scale eddies will cause the plume to spread relative to the instantaneous centerline while larger-scale motions will cause the plume to meander. With recent advances in fast-response instrumentation for measuring real-time concentrations in the field, it is now possible to obtain data to describe the growth of instantaneous plumes. Relationships have been developed to predict plume diffusion coefficients from simple meteorological parameters, and thus far, the equations appear to be robust. The purpose of this paper is to summarize and compare diffusion coefficients from three independent field studies in which instantaneous plumes were sampled downwind of ground-level sources.
- OSTI ID:
- 422884
- Report Number(s):
- CONF-960127--
- Country of Publication:
- United States
- Language:
- English
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