
Accession Number : AD0690895
Title : A CORRELATION OF FIELD OBSERVATIONS OF PLUME RISE,
Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE FLUID MECHANICS LAB
Personal Author(s) : Fay,James A. ; Escudier,Marcel ; Hoult,David P.
Report Date : APR 1969
Pagination or Media Count : 40
Abstract : Data from 137 sets of plume observations, comprising nearly 1500 data points, are correlated with two simple formulae. These formulae, one for the buoyancydominated rise region and the other for the stratificationdominated leveledoff region of a plume, represent an approximate form of an entrainment theory for the case of uniform atmospheric stratification and zero wind shear. The two formulae are found to correlate the data equally well over all values of the stack exit and meteorological parameters, provided only that the bulk mean velocity of the stack gases exceeds the mean wind speed by at least 20%. The ratio of observed to calculated plume rise is found to be distributed log normally about the mean value. (Author)
Descriptors : (*WASTE GASES, AERODYNAMIC CHARACTERISTICS), BUOYANCY, AIR POLLUTION, MOMENTUM, CORRELATION TECHNIQUES, WIND, EQUATIONS OF MOTION, VELOCITY
Subject Categories : Aerodynamics
Fluid Mechanics
Air Pollution and Control
Distribution Statement : APPROVED FOR PUBLIC RELEASE