2010 | OriginalPaper | Buchkapitel
Experimental Investigation of the Mixing-Process in a Jet-in-Crossflow Arrangement by Simultaneous 2d-LIF and PIV
verfasst von : Camilo Cárdenas, Rainer Suntz, Henning Bockhorn
Erschienen in: Micro and Macro Mixing
Verlag: Springer Berlin Heidelberg
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A combination of simultaneous planar laser-induced fluorescence and particle image velocimetry measuring-technique is applied to investigate the flow field in a jet-in-crossflow arrangement. Two-dimensional maps of normalized averaged jet-concentrations <
c
>, axial turbulence intensities
Tu
x
andnormalized Reynolds-fluxes <
v
i
’c’
>
/U
max
are measured. In these experiments, the influence of a swirl in the jet as well as varying turbulence levels characterized by the Reynolds number on the mixing efficiency is investigated. A direct relation between Reynolds-fluxes (and -stresses) and the increasing turbulent flows’ mass-transfer is observed.