TY  - JOUR
AU  - Hoffmann, A.
AU  - Zimmermann, F.
AU  - Scharr, H.
AU  - Krömker, S.
AU  - Schulz, C.
TI  - Instantaneous three-dimensional visualization of concentration distributions in turbulent flows with cross-plane laser-induced fluorescence imaging
JO  - Applied physics / B
VL  - 80
SN  - 0946-2171
CY  - Berlin
PB  - Springer
M1  - PreJuSER-44108
SP  - 125 - 131
PY  - 2005
N1  - Record converted from VDB: 12.11.2012
AB  - 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.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000225524900019
DO  - DOI:10.1007/s00340-004-1670-8
UR  - https://juser.fz-juelich.de/record/44108
ER  -