COMMENTS ON "RELATIONSHIPS BETWEEN HIGHER MOMENTS OF CONCENTRATION AND OF DOSE IN TURBULENT DISPERSION"

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Authors
  1. Yee, E.
  2. Chan, R.
Corporate Authors
Defence Research Establishment Suffield, Ralston ALTA (CAN)
Abstract
Mole and Clarke (1995, hereafter MC) demonstrated that there was a collapse in plume concentration data when certain normalized higher moments of teh fluctuating concentration were plotted against each other. In particular, MC demonstrated that the concentration kurtosis and skewness exhibit a characteristic collapse onto a single curve when plotted against each other, ad did the normalized 5th moment of concentration (super-skewness) against either skewness or kurtosis. This observation has an important implication with regard to the parametrization of the concentration probability density function (PDF); namely, the concentration PDF requires the specification of at most one shape parameter (viz., three parameters in total including those for location and scale) for its proper representation over a wide range of plume positions. although MC investigated the relationship betwen skewness and kurtosis (viz., between the normalized third and fourth moments), they did not consider the next lower-order relationship between fluctuation intensity (i.e., standard deviation of concentration divided by mean concentration) and skewness (viz., betrween the normalized second and third moments). TRUNCATED
Keywords
Distribution functions
Date of publication
01 Jul 1996
Number of Pages
11
Reprinted from
Boundary-Layer Meteorology, vol 82, 1997, p 341-351
DSTKIM No
97-03471
CANDIS No
503190
Format(s):
Hardcopy;Document Image stored on Optical Disk

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