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Sparse-Lagrangian PDF Modelling of Silica Synthesis from Silane Jets in Vitiated Co-flows with Varying Inflow Conditions

Neuber, Gregor; Kronenburg, Andreas ; Stein, Oliver Thomas ORCID iD icon; Garcia, Carlos E.; Williams, Benjamin A. O.; Beyrau, Frank; Cleary, Matthew J.


This paper presents a comparison of experimental and numerical results for a series of turbulent reacting jets where silica nanoparticles are formed and grow due to surface growth and agglomeration. We use large-eddy simulation coupled with a multiple mapping conditioning approach for the solution of the transport equation for the joint probability density function of scalar composition and particulate size distribution. The model considers inception based on finite-rate chemistry, volumetric surface growth and agglomeration. The sub-models adopted for these particulate processes are the standard ones used by the community. Validation follows the “paradigm shift” approach where elastic light scattering signals (that depend on particulate number and size), OH- and SiO-LIF signals are computed from the simulation results and compared with “raw signals” from laser diagnostics. The sensitivity towards variable boundary conditions such as co-flow temperature, Reynolds number and precursor doping of the jet is investigated. Agreement between simulation and experiments is very good for a reference case which is used to calibrate the signals. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000158675
Veröffentlicht am 12.05.2023
DOI: 10.1007/s10494-020-00140-2
Zitationen: 4
Web of Science
Zitationen: 5
Zitationen: 5
Cover der Publikation
Zugehörige Institution(en) am KIT Engler-Bunte-Institut (EBI)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 04.2021
Sprache Englisch
Identifikator ISSN: 1573-1987, 0365-7132, 0003-6994, 1386-6184, 2212-0939
KITopen-ID: 1000158675
Erschienen in Flow, Turbulence and Combustion
Verlag Springer-Verlag
Band 106
Heft 4
Seiten 1167–1194
Vorab online veröffentlicht am 12.05.2020
Schlagwörter Multiple mapping conditioning, Nanoparticle flame synthesis, Elastic light scattering, LES
Nachgewiesen in Scopus
Web of Science
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