Large eddy simulation of turbulent flame synthesis of silica nanoparticles with an extended population balance model
File(s)
Published version
Author(s)
Tsagkaridis, Malamas
Papadakis, George
Jones, William P
Rigopoulos, Stelios
Type
Journal Article
Abstract
In the present study, a recently proposed extended population balance equation (PBE) model for aggregation and sintering is incorporated into a large eddy simulation-probability density function (LES-PDF) modelling framework to investigate synthesis of silica nanoparticles in a turbulent diffusion flame. The stochastic field method is employed to solve the LES-PBE-PDF equations, characterising the influence of the unresolved sub-grid scale motions and accounting for the interactions between turbulence, chemistry and particle dynamics. The models for gas-phase chemistry and aerosol dynamics are the same as those recently used by the authors to simulate silica synthesis in a laminar flame (Tsagkaridis et al. in Aerosol Sci Technol 57(4):296–317, 2023). Thus, by retaining the same kinetics without any adjustments in parameters, we focus on the modelling issues arising in silica flame synthesis. The LES results are compared with experimental in-situ small-angle X-ray scattering (SAXS) data from the literature. Good agreement is found between numerical predictions and experimental data for temperature. However, the LES model underestimates the SAXS data for the primary particle diameter by a factor of two. Possible reasons for this discrepancy are discussed in view of the previous laminar flame simulations.
Date Issued
2023-09
Date Acceptance
2023-08-02
Citation
Flow, Turbulence and Combustion, 2023, 111 (3), pp.1029-1057
ISSN
0003-6994
Publisher
Springer
Start Page
1029
End Page
1057
Journal / Book Title
Flow, Turbulence and Combustion
Volume
111
Issue
3
Copyright Statement
© The Author(s) 2023. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
License URL
Identifier
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:001060300100001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
Subjects
AEROSOL SYNTHESIS
COAGULATION
Flame synthesis
FLUID-PARTICLE DYNAMICS
FORMULATION
Mechanics
NUCLEATION
PDF methods
Physical Sciences
Population balance
PROBABILITY DENSITY-FUNCTION
REACTORS
SCALAR
Science & Technology
Silica nanoparticles
SIZE
Stochastic field method
Technology
Thermodynamics
TITANIA
Turbulent flame
Publication Status
Published
Date Publish Online
2023-08-26