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Mass Flow Scaling of Gas-Assisted Coaxial Atomizers

Wachter, S. 1; Jakobs, T. ORCID iD icon 1; Kolb, T. 1,2
1 Institut für Technische Chemie (ITC), Karlsruher Institut für Technologie (KIT)
2 Engler-Bunte-Institut (EBI), Karlsruher Institut für Technologie (KIT)

Abstract:

This study aims to derive basic principles for liquid mass flow scaling of gas-assisted coaxial nozzles. Four liquid mass flow steps were investigated in the range of M$_{liq}$ = 20–500 kg·h$^{-1}$, applying four atomizers with similar geometry designed at We$_{aero}$ = const. High-speed camera and phase Doppler anemometer were utilized to detect the local droplet size distribution. To estimate a reliable measurement plane, a detection method and determination according to the free jet theory was used. The resulting droplet size was analyzed, applying the aerodynamic Weber number, as well as the gas momentum flow. An empirical model was derived out of the measured data, which allows for liquid mass flow scaling when process parameters such as GLR, liquid mass flow, and required Sauter mean diameter are specified. The model was developed as a first step towards liquid mass flow scaling of gas-assisted coaxial atomizers within the investigated range of operating conditions.


Verlagsausgabe §
DOI: 10.5445/IR/1000143605
Veröffentlicht am 13.03.2022
Originalveröffentlichung
DOI: 10.3390/app12042123
Scopus
Zitationen: 3
Web of Science
Zitationen: 3
Dimensions
Zitationen: 4
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Technische Chemie (ITC)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2022
Sprache Englisch
Identifikator ISSN: 2076-3417
KITopen-ID: 1000143605
HGF-Programm 38.05.01 (POF IV, LK 01) Anthropogenic Carbon Cycle
Erschienen in Applied Sciences (Switzerland)
Verlag MDPI
Band 12
Heft 4
Seiten Art.-Nr.: 2123
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagwörter mass flow scaling; gas-assisted nozzles; Weber number; empirical model
Nachgewiesen in Dimensions
Scopus
Web of Science
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