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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN Печать: 2152-5102
ISSN Онлайн: 2152-5110

Выпуски:
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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v24.i4-6.250
pages 694-706

On-Line Process Control in Melt Spraying Using Phase-Doppler Anemometry

Joachim Domnick
Hochschule Esslingen, University of Applied Sciences, Germany
J. Raimann
Lehrstuhl für Strömwigsmechanik, Universität Erlangen-Nümberg, Erlangen, Germany
G. Wolf
Applikations- und Technikzentrum für Energieverfahrens-, Umwelt und Strömungstechnik (ATZ-EVUS), Vilseck, Germany
Alain Berlemont
UMR 6614-CORIA, CNRS, Universite et INSA de Rouen, BP12, Avenue de l'Universite, 76801 Saint-Etienne du Rouvray Cedex, France
M.-S. Cabot
Laboratoire d'Énergétique des Systemes et Precedes URA CNRS 230, CORIA, INSA de Rouen, France

Краткое описание

Phase Doppler anemometry (PDA) and Extended phase Doppler anemometry (EPDA) are used for the characterization of powders produced with different melt atomization techniques. A laboratory scale production type melt spray facility was adapted for the application of PDA and measurements were performed in conventional gas atomization (CGA) of melts. In liquid gas atomization (LGA) of melts an extended phase Doppler system has been used allowing a distinction between melt particles and liquefied gas droplets.
In CGA, the results obtained with PDA show some discrepancies with off-line powder characterization techniques, however, variations of process conditions leading to changes in the powder size distributions could be successfully detected. Hence, a first attempt is presented how phase-Doppler anemometry can be incorporated in a process control loop.
In LGA, liquefied gas droplets and melt droplets could be successfully discriminated by using a sign of phase EPDA system. However, additional measurements are necessary to improve the reproducibility of the results.


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