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Magnetic resonance velocimetry reveals secondary flow in falling films at the microscale

Saliba, Georges C. 1; Korvink, Jan G. 2; Brandner, Juergen J. 3
1 Karlsruher Institut für Technologie (KIT)
2 Institut für Mikrostrukturtechnik (IMT), Karlsruher Institut für Technologie (KIT)
3 Karlsruhe Nano Micro Facility (KNMF), Karlsruher Institut für Technologie (KIT)

Abstract:

To design better falling film microreactors, concrete knowledge of the flow and the ability to produce complex channel structures are
necessary. The efficiency of falling film microreactors is most often determined by studying the composition of the liquid after it has exited
the system. In the present study, Magnetic Resonance Velocimetry is used to obtain three-dimensional, three-component velocity fields inside
of falling films flowing in open microchannels. The microchannels were made by two-photon polymerization. It was possible to resolve the
complex shape of the liquid–gas interface and to observe, for the first time, secondary flow inside of a falling film at the microscale.


Verlagsausgabe §
DOI: 10.5445/IR/1000172630
Veröffentlicht am 23.07.2024
Originalveröffentlichung
DOI: 10.1063/5.0214609
Scopus
Zitationen: 1
Web of Science
Zitationen: 1
Dimensions
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Karlsruhe Nano Micro Facility (KNMF)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 07.2024
Sprache Englisch
Identifikator ISSN: 1070-6631, 1527-2435, 0031-9171, 1089-7666, 2163-4998
KITopen-ID: 1000172630
Erschienen in Physics of Fluids
Verlag American Institute of Physics (AIP)
Band 36
Heft 7
Seiten Art.-Nr.: 071705
Vorab online veröffentlicht am 08.07.2024
Nachgewiesen in Web of Science
Dimensions
Scopus
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