caa a22 4500 477093671 CHVBK 20180405111521.0 cr unu---uuuuu 170330e19960801xx s 000 0 eng 10.1007/BF00190672 doi (NATIONALLICENCE)springer-10.1007/BF00190672 Use of caged fluorescent dyes for the study of turbulent passive scalar mixing [Elektronische Daten] [J. Guilkey, K. Gee, P. McMurtry, J. Klewicki] The non-intrusive initialization of a flow field with distinct and spatially segregated scalar components represents a significant experimental difficulty. Here a new technique is described which makes possible the non-intrusive initialization of a spatially binary passive scalar field in a laminar or turbulent flow field. This technique uses photoactivatable (caged) fluorescent dyes dissolved in the flow medium. The scalar field within the flow field is tagged or initialized by "uncaging” the appropriate regions with an ultraviolet excimer laser. Mixing between the tagged and untagged regions is quantified using standard laser induced fluorescence techniques. The method is currently being used to study mixing in a turbulent pipe flow. Springer-Verlag, 1996 Guilkey J. Physical Fluid Dynamics Laboratory, Department of Mechanical Engineering, University of Utah, 3209 MEB, 84112, Salt Lake City, Utah, USA aut Gee K. Molecular Probes, 4849 Pitchford Avenue Eugene, 97402-0414, Oregon, USA aut McMurtry P. Physical Fluid Dynamics Laboratory, Department of Mechanical Engineering, University of Utah, 3209 MEB, 84112, Salt Lake City, Utah, USA aut Klewicki J. Physical Fluid Dynamics Laboratory, Department of Mechanical Engineering, University of Utah, 3209 MEB, 84112, Salt Lake City, Utah, USA aut Experiments in Fluids Springer-Verlag 21/4(1996-08-01), 237-242 0723-4864 21:4<237 1996 21 348 https://doi.org/10.1007/BF00190672 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00190672 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Guilkey J. Physical Fluid Dynamics Laboratory, Department of Mechanical Engineering, University of Utah, 3209 MEB, 84112, Salt Lake City, Utah, USA aut NATIONALLICENCE 700 1- Gee K. Molecular Probes, 4849 Pitchford Avenue Eugene, 97402-0414, Oregon, USA aut NATIONALLICENCE 700 1- McMurtry P. Physical Fluid Dynamics Laboratory, Department of Mechanical Engineering, University of Utah, 3209 MEB, 84112, Salt Lake City, Utah, USA aut NATIONALLICENCE 700 1- Klewicki J. Physical Fluid Dynamics Laboratory, Department of Mechanical Engineering, University of Utah, 3209 MEB, 84112, Salt Lake City, Utah, USA aut NATIONALLICENCE 773 0- Experiments in Fluids Springer-Verlag 21/4(1996-08-01), 237-242 0723-4864 21:4<237 1996 21 348 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer