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Aerosol Science and Technology Volume 19, 1993 - Issue 4
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Original Articles

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

F. Einar Kruis Center for Aerosol Processes, University of Cincinnati, Department of Chemical Engineering, Cincinnati, OH, 45221; Particle Technology Laboratory, Department of Chemical Engineering, Delft University of Technology, 2628, BL Delft, The Netherlands
,
Karl A. Kusters Center for Aerosol Processes, University of Cincinnati, Department of Chemical Engineering, Cincinnati, OH, 45221
,
Sotiris E. Pratsinis Center for Aerosol Processes, University of Cincinnati, Department of Chemical Engineering, Cincinnati, OH, 45221
&
Brian Scarlett Particle Technology Laboratory, Department of Chemical Engineering, Delft University of Technology, 2628, BL Delft, The Netherlands
Pages 514-526 | Received 27 Jan 1993, Accepted 21 Jun 1993, Published online: 12 Jun 2007
 
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Abstract

A simple model describing the evolution of particle morphology, size, and number concentration by coagulation and sintering is presented that neglects the spread of the polydispersity of aggregate and primary particles. The influence of irregular/fractal structure on the collision kernel is accounted for, from the free molecular to the continuum regime. The model predictions compare well to those of a detailed two-dimensional sectional model of nonspherical particle dynamics. After a theoretical evaluation of the main sintering mechanism, the proposed model was applied to laser synthesis of silicon in an aerosol reactor.

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