A STUDY ON AIR POLLUTION. DIFFUSION AND SAMPLING (thesis)
Technical Report
·
OSTI ID:4014008
A diffusion equation is presented for an instantaneously created gas cloud, starting from the Newtonian equation of motion of a particle in turbulent air and from the equation of continuity. A derivation based on the principles outlined by Schmidt is demonstrated on a theoretical model and a comparison is made with Sutton's results on the same model. The effect of large eddies on diffusion is considered. A theory is presented for use in the sampling of gases and of particles from turbulent streaming air. Factors affecting sampling precision are discussed. Results of experiments are included which support the theories developed. Empirical relations are given between the turbulent diffusion parameters occurring in the diffusion equations and some easily measurable meteorological quantities. (C.H.)
- Research Organization:
- Utrecht. Rijksuniversiteit
- NSA Number:
- NSA-15-018334
- OSTI ID:
- 4014008
- Report Number(s):
- NP-10108
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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