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Toward the development of a virtual spray test-rig using the Smoothed Particle Hydrodynamics method

Chaussonnet, G. 1; Braun, S. 1; Dauch, T. 1; Keller, M. 1; Sänger, A. 2; Jakobs, T. ORCID iD icon 2; Koch, R. 1; Kolb, T. 2; Bauer, H.-J. 1
1 Karlsruher Institut für Technologie (KIT)
2 Institut für Technische Chemie (ITC), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

In this work we present the numerical simulation of air-assisted liquid atomization at high pressure us-
ing the Smoothed Particle Hydrodynamics (SPH) method. Different post-processing tools are applied to
facilitate the comparison with experimental observations. This allows to quantitatively validate the nu-
merical method against the experiment, in terms of (i) frequency of the Kelvin–Helmholtz instability that
develops on the jet surface, and (ii) statistical distribution of the jet intact length. The qualitative com-
parison also shows a good prediction of the jet global instability and of the fragmented liquid lumps,
with regards to length and time scales. In addition, the post-processing tools also give access to the local
parameters of the generated spray in the vicinity of the nozzle, which are not easily accessible in a real
experiments. Using these tools, 1D profiles and 2D maps of the liquid phase properties such as the vol-
ume fraction, the droplet concentration, the Sauter Mean Diameter (SMD) and the droplet sphericity are
presented. Because of the Lagrangian nature of the SPH method, it is also possible to monitor the whole
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Postprint §
DOI: 10.5445/IR/1000089863
Veröffentlicht am 16.02.2020
DOI: 10.1016/j.compfluid.2019.01.010
Zitationen: 13
Web of Science
Zitationen: 14
Zitationen: 15
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Technische Chemie (ITC)
Institut für Thermische Strömungsmaschinen (ITS)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 02.2019
Sprache Englisch
Identifikator ISSN: 0045-7930
KITopen-ID: 1000089863
HGF-Programm 34.14.02 (POF III, LK 01) Vergasung
Erschienen in Computers & fluids
Verlag Elsevier
Band 180
Seiten 68–81
Vorab online veröffentlicht am 15.02.2019
Schlagwörter Smoothed Particle Hydrodynamics, Air-assisted breakup, Atomization cascade, Spray characteristics, Virtual spray test-rig
Nachgewiesen in Scopus
Web of Science
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