Abstract

FZJ-2026-01876

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Turbulence effects on nano-particle formation

Cifuentes, L. (Corresponding author)FZJ*

2026

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Please use a persistent id in citations: doi:10.34734/FZJ-2026-01876

Abstract: The effect of turbulence on particle-forming flames is investigated via three-dimensional direct numerical simulations. Premixed and non-premixed methane-air turbulent planar jet flames doped with titanium tetraisopropoxide (TTIP), forming titanium dioxide $TiO_2$ nanoparticles, are investigated using the sectional model and a finite-rate chemistry approach. These simulations resolve the smallest relevant scales - the Batchelor scales - of the nanoparticle field. The change in particle concentrations due to diffusion, coagulation, and nucleation is defined and characterized by the particle number concentration layers. Several regions of the computational domain with different turbulent intensities are analyzed, and the effects of the complex normal and tangential strain rates that govern the thickness of particle-number-concentration fronts are evaluated. This information is subsequently used to discuss the physics of how turbulence affects premixed and non-premixed particle-forming flames, to develop transferable models for nanoparticle-synthesis simulations.

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Contributing Institute(s):

1. Jülich Supercomputing Center (JSC)

Research Program(s):

1. 5111 - Domain-Specific Simulation & Data Life Cycle Labs (SDLs) and Research Groups (POF4-511) (POF4-511)
2. SDLFSE - SDL Fluids & Solids Engineering (SDLFSE) (SDLFSE)

Appears in the scientific report 2026

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Database coverage:

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