English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

In most simulations of fine particles in reacting flows, including sootingflames, enthalpy exchanges between gas and particle phases and differentialdiffusion between the two phases are most often neglected, since the particlemass fraction is generally very small. However, when the nanoparticles massfraction is very large representing up to 50% of the mixture mass, theconservation of the total enthalpy and/or the total mass becomes critical. Inthe present paper, we investigate the impact of mass and enthalpy conservationin the modeling of titania nanoparticles synthesis in flames, classicallycharacterized by a high conversation rate and consequently a high nanoparticlesconcentration. It is shown that when the nanoparticles concentration is high,neglecting the enthalpy of the particle phase may lead to almost 70% relativeerror on the temperature profile and to relative errors on the main titaniaspecies mass fractions and combustion products ranging from 20% to 100%. It isalso established that neglecting the differential diffusion of the gas phasewith respect to the particle phase is also significant, with almost 15%relative error on the TiO$_2$ mole fraction, although the effect on combustionproducts is minor.

Importance of mass and enthalpy conservation in the modeling of titania nanoparticles flame synthesis