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The fine structure of a slender scalar plume in sheared turbulence

The fine structure of a slender scalar plume in sheared turbulence
The fine structure of a slender scalar plume in sheared turbulence
We present measurements of the fine structure of a passive scalar plume in uniformly sheared turbulence generated in a water tunnel. We report on the mixed velocity-scalar statistics of the plume, including the probability density functions of the velocity, scalar, and scalar derivatives, as well as conditional expectations of the velocity and the scalar derivatives, conditioned upon the scalar fluctuations. Such results are particularly relevant to models that are intended to be used for solving the balance equation of the scalar pdf. Specifically, we address the effect of having a highly intermittent scalar field, in which case the scalar pdf is highly skewed and non-Gaussian and the conditional expectations of the velocity components are distinctly non-linear.
978-3-319-29129-1
0930-8989
259-263
Springer
Vanderwel, Christina
fbc030f0-1822-4c3f-8e90-87f3cd8372bb
Tavoularis, Stavros
9800ff44-e983-4293-a2b1-f29eec90d359
Vanderwel, Christina
fbc030f0-1822-4c3f-8e90-87f3cd8372bb
Tavoularis, Stavros
9800ff44-e983-4293-a2b1-f29eec90d359

Vanderwel, Christina and Tavoularis, Stavros (2016) The fine structure of a slender scalar plume in sheared turbulence. In Progress in Turbulence VI. vol. 165, Springer. pp. 259-263 . (doi:10.1007/978-3-319-29130-7_45).

Record type: Conference or Workshop Item (Paper)

Abstract

We present measurements of the fine structure of a passive scalar plume in uniformly sheared turbulence generated in a water tunnel. We report on the mixed velocity-scalar statistics of the plume, including the probability density functions of the velocity, scalar, and scalar derivatives, as well as conditional expectations of the velocity and the scalar derivatives, conditioned upon the scalar fluctuations. Such results are particularly relevant to models that are intended to be used for solving the balance equation of the scalar pdf. Specifically, we address the effect of having a highly intermittent scalar field, in which case the scalar pdf is highly skewed and non-Gaussian and the conditional expectations of the velocity components are distinctly non-linear.

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Published date: March 2016
Venue - Dates: iTi Conference on Turbulence, Italy, 2014-09-22 - 2014-09-24
Organisations: Aeronautics, Astronautics & Comp. Eng, Aerodynamics & Flight Mechanics Group, Faculty of Engineering and the Environment

Identifiers

Local EPrints ID: 389797
URI: https://eprints.soton.ac.uk/id/eprint/389797
ISBN: 978-3-319-29129-1
ISSN: 0930-8989
PURE UUID: ade9b644-da31-4e88-af67-af217078e47f

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Date deposited: 15 Mar 2016 14:36
Last modified: 20 Jul 2019 06:03

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