Scalar interactions between parallel jets measured using a two-channel PLIF technique
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A two-channel PLIF technique that simultaneously quantifies two scalar fields is presented. The technique consists of two independently operated single-color PLIF systems that synchronously image a common region. Two dyes (fluorescein sodium salt and oxazine 725) are excited by two lasers (argon-ion and krypton-ion), and the resulting fluorescence is imaged by a pair of cameras. The two-channel system is used to study mixing between two parallel jets, each transporting a different scalar species. Time-averaged and instantaneous mixing statistics are calculated and used to show the effects of turbulent structure on scalar mixing. In particular, the existence of positive spatial correlations between the two scalar fields is demonstrated in off-axis mixing regions.
- Crimaldi JP, Cadwell JR, Weiss JB (2008) Reaction enhancement of isolated scalars by vortex stirring. Phys Fluids 20(7). doi:10.1063/1.2963139
- Heikkila J, Silven O (1997) A four-step camera calibration procedure with implicit image correction. In: IEEE computer society conference on computer vision and pattern recognition, pp 1106–1112. doi:10.1109/CVPR.1997.609468
- Ware B, Cyr D, Gorti S, Lanni F (1983) Electrophoretic and frictional properties of particles in complex media measured by laser light scattering and fluorescence photobleaching recovery. In: Dahneke BE (eds) Measurement of suspended particles by quasi-elastic light scattering.. Wiley, New York, pp 255–289Google Scholar
- Zhang Z (1999) Flexible camera calibration by viewing a plane from unknown orientations. In: International Conference on Computer Vision, Corfu, Greece, pp 666–673Google Scholar