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@ARTICLE{Gauding:837113,
author = {Gauding, Michael and Dietzsch, Felix and Göbbert, Jens
Henrik and Thévenin, Dominique and Abdelsamie, Abouelmagd
and Hasse, Christian},
title = {{D}issipation element analysis of a turbulent non-premixed
jet flame},
journal = {Physics of fluids},
volume = {29},
number = {8},
issn = {1089-7666},
address = {[S.l.]},
publisher = {American Institute of Physics},
reportid = {FZJ-2017-06102},
pages = {085103 -},
year = {2017},
abstract = {The objective of the present work is to examine the
interaction between turbulent mixing and chemistry by
employing the method of dissipation elements in a
non-premixed turbulent jet flame. The method of dissipation
elements [L. Wang and N. Peters, J. Fluid Mech. 554,
457–475 (2006)] is used to perform a space-filling
decomposition of the turbulent jet flow into different
regimes conditioned on their location with respect to the
reaction zone. Based on the non-local structure of
dissipation elements, this decomposition allows us to
discern whether points away from stoichiometry are connected
through a diffusive layer with the reaction zone. In a next
step, a regime based statistical analysis of dissipation
elements is carried out by means of data obtained from a
direct numerical simulation. Turbulent mixing and chemical
reactions depend strongly on the mixture fraction gradient.
From a budget between strain and dissipation, the mechanism
for the formation and destruction of mean gradients along
dissipation elements is inspected. This budget reveals that
large gradients in the mixture fraction field occur at a
small but finite length scale. Finally, the inner structure
of dissipation elements is examined by computing statistics
along gradient trajectories of the mixture fraction field.
Thereby, the method of dissipation elements provides a
statistical characterization of flamelets and novel insight
into the interaction between chemistry and turbulence.},
cin = {JSC / NIC / JARA-HPC},
ddc = {530},
cid = {I:(DE-Juel1)JSC-20090406 / I:(DE-Juel1)NIC-20090406 /
$I:(DE-82)080012_20140620$},
pnm = {511 - Computational Science and Mathematical Methods
(POF3-511) / Symmetry Analysis and DNS of a Turbulent Plane
Jet $(hfg02_20161101)$},
pid = {G:(DE-HGF)POF3-511 / $G:(DE-Juel1)hfg02_20161101$},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000409227500046},
doi = {10.1063/1.4991574},
url = {https://juser.fz-juelich.de/record/837113},
}