A Model for the Statistics of Concentration Fluctuations Arising from Dual Source Releases

PDF

Authors
  1. Yee, E.
Corporate Authors
Defence Research Establishment Suffield, Ralston ALTA (CAN)
Abstract
The higher-order correlation functions for the concentration fluctuations arising from a two-point-source configuration have been calculated analytically within the context of the phenomenology of a fluctuating plume model (viz., a meandering plume model which explicitly incorporates internal fluctuations). Explicit expressions for the second-, third-, and fourth-order correlation functions between the concentration fluctuations produced by two point sources are given in terms of the source separation d and 5 physically based parameters that define the generalized fluctuating plume model: namely, the absolute plume dispersion, sigma a, which determines the outer plume length scale; the relative plume dispersion, sigma r, which determines the inner plume length scale; the fluctuation, ir, in relative coordinates which determines the internal concentration fluctuation level; the correlation coefficient, r, between the positions of the centroids of the two interfering plumes; and, the correlation coefficient, r*, between the concentration fluctuations of the two plumes in relative coordinates which determines the degree of internal mixing of the two scalars.
Keywords
Atmospheric dispersion models;Distribution functions;Cloud dispersion;Concentration fluctuations;Higher-order correlation functions;Water channel simulation;Interaction of Two Plumes
Report Number
DRES-TR-2000-027 — Technical Report
Date of publication
01 Jun 2000
Number of Pages
56
DSTKIM No
CA002092
CANDIS No
513902
Format(s):
Hardcopy;Document Image stored on Optical Disk

Permanent link

Document 1 of 1

Date modified: