@inproceedings{6b0ccc9557a44717b53108d5c8e22316,

title = "Distributed moments of a scalar PDF",

abstract = "The evolution of concentration values in a turbulent flow is quantified by the probability density function (PDF) of concentration or more simply by the expected mass fraction function (EMF). It is convenient to use some lower-order moments to approximate the PDF or EMF. In this paper a particularly simple representation of these moments is explored. Concentration measurements using planar laser induced fluorescence (PLIF) are made over the cross-section of a fluorescent plume emanating from a point source in a grid-turbulence flow in a water tunnel. It is observed that the distributed moments across the plume are determined from a 'local' concentration scale and the mean concentration profile. The moments of the EMF appear to be related to the center-line moments and the EMF to have a simple, self-similar form when scaled with the center-line mean concentration.",

keywords = "Expected mass fraction, Grid turbulence, Particle image velocimetry (PIV), Planar laser induced fluorescence (PLIF), Turbulent diffusion",

author = "Partha Sarathi and Roi Gurka and Sullivan, {Paul J.} and Kopp, {Gregory A.}",

year = "2010",

month = dec,

day = "1",

language = "English",

isbn = "9788890357411",

series = "Modelling for Environment's Sake: Proceedings of the 5th Biennial Conference of the International Environmental Modelling and Software Society, iEMSs 2010",

pages = "313--321",

booktitle = "Modelling for Environment's Sake",

note = "5th Biennial Conference of the International Environmental Modelling and Software Society: Modelling for Environment's Sake, iEMSs 2010 ; Conference date: 05-07-2010 Through 08-07-2010",

}