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Real‐Time Visualization of Internal and External Concentration Fields in Multiphase Systems via Laser‐induced Fluorescence and Rainbow Schlieren Deflectometry During and After Droplet Production
Author(s) -
Heine Jens Stefan,
Schulz Joschka Marco,
Junne Henning,
Böhm Lutz,
Kraume Matthias,
Bart HansJörg
Publication year - 2020
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.202000135
Subject(s) - schlieren , rainbow , fluorescence , schlieren imaging , optics , laser induced fluorescence , materials science , capillary action , laser , visualization , chemistry , physics , composite material , computer science , artificial intelligence
The applicability of laser‐induced dye fluorescence (LIF) and rainbow schlieren deflectometry (RSD) for qualitative, non‐invasive real‐time visualization of spatial concentration distributions in two standard reference systems is presented. The combination of LIF and RSD enables measurements inside and outside of droplets and is able to overcome limitations of both measurement techniques. Experimental results in the presence of interfacial phenomena are compared and the connection between inner and outer effects is shown during droplet production at a capillary.