Bi-variate moment method simulation of coagulating and sintering alumina nano-particles in flames

Daniel E. Rosner, Jouni Pyykönen

Research output: Contribution to journalArticleScientificpeer-review

56 Citations (Scopus)

Abstract

The design/control of particle synthesis reactors is hampered by the cumbersome nature of simulation methods (such as “sectional” representations of the particle population balance equation) to track the evolution of coagulating, restructuring populations in complex flow environments. Bivariate PBE‐methods were investigated using generalizations of a recent Gaussian quadrature‐based “moment” approach (McGraw, 1997; Wright et al., 2001). A 9‐moment method was applied to an extensive data set recently obtained using a “seeded” laminar flame reactor with laser‐based, as well as TEM‐grid thermophoretic sampling. Alumina nano‐aggregate population evolution is predicted using available rate/transport laws (for coagulation, thermophoresis and sintering) and the efficacy is predicted, and, together with the efficacy of such simulation methods for parameter estimation, is also illustrated inferring a “best fit” activation energy for nanoparticle sintering. Variants/extensions of these techniques should enable their incorporation into, say, full PDF‐methods for turbulent synthesis reactors, using improved rate laws.
Original languageEnglish
Pages (from-to)476-491
JournalAIChE Journal
Volume48
Issue number3
DOIs
Publication statusPublished - 2002
MoE publication typeA1 Journal article-refereed

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Aluminum Oxide
Method of moments
Alumina
Sintering
Thermophoresis
Coagulation
Parameter estimation
Population
Activation energy
Sampling
Nanoparticles

Cite this

Rosner, Daniel E. ; Pyykönen, Jouni. / Bi-variate moment method simulation of coagulating and sintering alumina nano-particles in flames. In: AIChE Journal. 2002 ; Vol. 48, No. 3. pp. 476-491.
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Bi-variate moment method simulation of coagulating and sintering alumina nano-particles in flames. / Rosner, Daniel E.; Pyykönen, Jouni.

In: AIChE Journal, Vol. 48, No. 3, 2002, p. 476-491.

Research output: Contribution to journalArticleScientificpeer-review

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