A Simple Model for the Evolution of the Characteristics of Aggregate Particles Undergoing Coagulation and Sintering

Kruis, Frank Einar; Kusters, Karl A.; Pratsinis, Sotiris E.; Scarlett, B. Florence

doi:10.1080/02786829308959656

Cited by 343 publications

(293 citation statements)

References 22 publications

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“…The agglomerate sizes of the particles predicted by an agglomeration model derived by Kruis et al (1993) were in good agreement with the measurements provided that the characteristic sintering time was properly fitted. In this study PCS measurements performed with the setup described above and model predictions are compared with each other and with samples, which were collected at different heights in the flame with a thermophoretic sam~ling.…”

Section: Introductionsupporting

confidence: 68%

“…The monodisperse model used here to describe particle growth of Si,N, was developed by Kruis et al (1993). They found that the results of the monodisperse model were in good agreement with both the results of a very detailed sectional model (Xiong et al, 1992) and with the experimental results of tests investigating the growth of silicon particles in the same reactor.…”

Section: Modelingsupporting

confidence: 54%

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Formation and Growth of Silicon Nitride Particles in a Laser-Driven Aerosol Reactor Investigated with Photon Correlation Spectroscopy and Electron Microscopy

Tuinman

Drunen

Marijnissen

et al. 1997

Aerosol Science and Technology

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ABSTRACT. This paper investigates the formation and growth of silicon nitride particles in a laser-driven aerosol reactor. This investigation is done on-line with photon correlation spectroscopy (PCS) and off-line with electron microscopy. The results of the measurements are compared with each other and with a monodisperse growth model that incorporates the influence of particle shape. PCS proved to be a good and fast monitoring technique, but it provides limited information: the intensity-weighted average particle size and approximate velocity. Electron microscope studies of samples showed good agreement with both the spectroscopy and the modeling results. The incorporation in the model and in the determination of the PCS diameter of the extra information about particle size and phase from the electron microscope photographs increases their accuracy. This is necessary if PCS combined with growth model are to be used for process control. Although the analysis techniques and the model are applied to a specific case, they are applicable in all types of flame reactors.

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Section: Introductionsupporting

confidence: 68%

Section: Modelingsupporting

confidence: 54%

Formation and Growth of Silicon Nitride Particles in a Laser-Driven Aerosol Reactor Investigated with Photon Correlation Spectroscopy and Electron Microscopy

Tuinman

Drunen

Marijnissen

et al. 1997

Aerosol Science and Technology

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“…However, real soot aggregates are composed of polydisperse primary particles and are partially coalesced. Surface-area equivalent diameter (d va ) and number (n va ) of the primary particles in polydisperse aggregates are defined as following (Kruis et al 1993):…”

Section: Theorymentioning

confidence: 99%

Improved sizing of soot primary particles using mass-mobility measurements

Dastanpour

Rogak

Graves

et al. 2015

Aerosol Science and Technology

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The properties and impacts of aggregated aerosol particles (i.e., soot, metal oxide fumes) depend on their morphology, as characterized by fractal dimension, prefactor, and primary particle diameter. The morphology may be measured directly by time-consuming ex situ microscopy or rapid but indirect in situ methods. Previously, it was found that particle mass and mobility measurements could be used for the estimation of the primary particle diameter of zirconia aggregates, using plausible assumptions related to the fractal structure (specifically, prefactor k a and exponent D a ). Since the formation and growth of zirconia aggregates are different from carbon soot, here we compare primary particle diameters measured directly from transmission electron microscopy analysis of soot particles with the diameters estimated from mass-mobility measurements. Performing extensive measurements on soot emissions from two reciprocating engines over a range of operating conditions, we found that there are no universal values of k a and D a that can be used for all conditions. However, new optimized values of k a and D a are estimated here for soot particles. The variation of the primary particle diameter with particle size is also taken into consideration and is shown to be essential to obtain physically realistic results. Using optimized values of k a and D a , the average primary particle sizing error is reduced for all soot types. This suggests that with some calibration, in situ sizing of the primary particle diameter, using mass and mobility measurements, can provide useful accuracy.

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“…ngd i R N s is the rate of destruction of crystals due to nucleation, growth and dissolution: 16) where:…”

Section: ( )mentioning

confidence: 99%

Development of Novel Crystallizer Design and Optimization Tools for Solution Crystallization

Linz¹,

Lythgoe²,

Anderko³

et al. 2004

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A Simple Model for the Evolution of the Characteristics of Aggregate Particles Undergoing Coagulation and Sintering

Cited by 343 publications

References 22 publications

Formation and Growth of Silicon Nitride Particles in a Laser-Driven Aerosol Reactor Investigated with Photon Correlation Spectroscopy and Electron Microscopy

Formation and Growth of Silicon Nitride Particles in a Laser-Driven Aerosol Reactor Investigated with Photon Correlation Spectroscopy and Electron Microscopy

Improved sizing of soot primary particles using mass-mobility measurements

Development of Novel Crystallizer Design and Optimization Tools for Solution Crystallization

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