%0 Journal Article
%A Hoffmann, A.
%A Zimmermann, F.
%A Scharr, H.
%A Krömker, S.
%A Schulz, C.
%T Instantaneous three-dimensional visualization of concentration distributions in turbulent flows with cross-plane laser-induced fluorescence imaging
%J Applied physics / B
%V 80
%@ 0946-2171
%C Berlin
%I Springer
%M PreJuSER-44108
%P 125 - 131
%D 2005
%Z Record converted from VDB: 12.11.2012
%X 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.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000225524900019
%R 10.1007/s00340-004-1670-8
%U https://juser.fz-juelich.de/record/44108