caa a22 4500 477092845 CHVBK 20180405111519.0 cr unu---uuuuu 170330e19961201xx s 000 0 eng 10.1007/s003480050026 doi (NATIONALLICENCE)springer-10.1007/s003480050026 Planar laser induced fluorescence technique for measurements of concentration fields in continuous stirred tank reactors [Elektronische Daten] [I. Houcine, H. Vivier, E. Plasari, R. David, J. Villermaux]  A new non-intrusive method based on laser sheet visualization and image processing has been developed to measure the instantaneous concentration fields of a non-reacting fluorescent dye in a continuous stirred tank reactor. The method consists of measuring the fluorescence intensity of a tracer excited by a thin planar laser sheet and in transforming it into an instantaneous concentration field of tracer by a calibration procedure. This allows the characterization of mixing in a plane defined as the cross section of the flow by the laser sheet. Flow visualization images have been recorded on video tape and subsequently digitized. The relationship between the intensity of the fluorescent light and the grey level of the images has been established. The first result is the instantaneous field of dye concentration. A contacting parameter between the fluids coming from the two inlet sources, and emphasizing the average state of the mixing, has been defined and its field has been determined. The field of temporal variance, which characterizes the segregation of the investigated zone, has also been computed. Springer-Verlag Berlin Heidelberg, 1996 Houcine I. Laboratoire des Sciences du Génie Chimique CNRS - ENSIC - INPL, 1, Rue Grandville B.P. 451, F-54001 Nancy Cedex, France, FR aut Vivier H. Laboratoire des Sciences du Génie Chimique CNRS - ENSIC - INPL, 1, Rue Grandville B.P. 451, F-54001 Nancy Cedex, France, FR aut Plasari E. Laboratoire des Sciences du Génie Chimique CNRS - ENSIC - INPL, 1, Rue Grandville B.P. 451, F-54001 Nancy Cedex, France, FR aut David R. Laboratoire des Sciences du Génie Chimique CNRS - ENSIC - INPL, 1, Rue Grandville B.P. 451, F-54001 Nancy Cedex, France, FR aut Villermaux J. Laboratoire des Sciences du Génie Chimique CNRS - ENSIC - INPL, 1, Rue Grandville B.P. 451, F-54001 Nancy Cedex, France, FR aut https://doi.org/10.1007/s003480050026 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s003480050026 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Houcine I. Laboratoire des Sciences du Génie Chimique CNRS - ENSIC - INPL, 1, Rue Grandville B.P. 451, F-54001 Nancy Cedex, France, FR aut NATIONALLICENCE 700 1- Vivier H. Laboratoire des Sciences du Génie Chimique CNRS - ENSIC - INPL, 1, Rue Grandville B.P. 451, F-54001 Nancy Cedex, France, FR aut NATIONALLICENCE 700 1- Plasari E. Laboratoire des Sciences du Génie Chimique CNRS - ENSIC - INPL, 1, Rue Grandville B.P. 451, F-54001 Nancy Cedex, France, FR aut NATIONALLICENCE 700 1- David R. Laboratoire des Sciences du Génie Chimique CNRS - ENSIC - INPL, 1, Rue Grandville B.P. 451, F-54001 Nancy Cedex, France, FR aut NATIONALLICENCE 700 1- Villermaux J. Laboratoire des Sciences du Génie Chimique CNRS - ENSIC - INPL, 1, Rue Grandville B.P. 451, F-54001 Nancy Cedex, France, FR aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer