Journal Article

PreJuSER-44108

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Instantaneous three-dimensional visualization of concentration distributions in turbulent flows with cross-plane laser-induced fluorescence imaging

Hoffmann, A. ; Zimmermann, F. ; Scharr, H.FZJ* ; Krömker, S. ; Schulz, C.

2005
Springer Berlin

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Please use a persistent id in citations: doi:10.1007/s00340-004-1670-8

Abstract: A laser-based technique for measuring instantaneous three-dimensional species concentration distributions in turbulent flows is presented. The laser beam from a single laser is formed into two crossed light sheets that illuminate the area of interest. The laser-induced fluorescence (LIF) signal emitted from excited species within both planes is detected with a single camera via a mirror arrangement. Image processing enables the reconstruction of the three-dimensional data set in close proximity to the cutting line of the two light sheets. Three-dimensional intensity gradients are computed and compared to the two-dimensional projections obtained from the two directly observed planes. Volume visualization by digital image processing gives unique insight into the three-dimensional structures within the turbulent processes. We apply this technique to measurements of toluene-LIF in a turbulent, non-reactive mixing process of toluene and air and to hydroxyl (OH) LIF in a turbulent methane-air flame upon excitation at 248 nm with a tunable KrF excimer laser.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Phytosphäre (ICG-III)

Research Program(s):

1. Chemie und Dynamik der Geo-Biosphäre (U01)

Appears in the scientific report 2005

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Database coverage:
JCR ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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