Aggregation rate of fine particles in turbulent flows

Shaoxian Song Hu, S. Lu, Y. Zhang, A. Lopez-Valdivieso, T. Fort

Resultado de la investigación: Contribución a una revistaArtículo

8 Citas (Scopus)

Resumen

An aggregation rate equation for fine particle suspensions in a turbulent flow has been derived in this study on the basis of the Tchen equation and a Gaussian probability distribution of particle-particle relative velocity, in which aggregation rate was correlated with a repulsive potential energy barrier. In the derivation, a capture efficiency term has been presented to estimate the correlation quantitatively. It has been found that capture efficiency depends on an initial aggregation rate constant, which can be represented by the slope of an E (aggregation degree) versus t (aggregation time) curve in a fine particle suspension at t → 0. Accordingly, capture efficiency could be experimentally determined through an aggregation kinetics test. In this work, this determination was tested with fine quartz and rhodochrosite suspensions in turbulent flows, and the results were compared with those obtained by computations based on the aggregation rate equation.

Idioma originalInglés
Páginas (desde-hasta)67-74
Número de páginas8
PublicaciónJournal of Dispersion Science and Technology
Volumen25
N.º1
DOI
EstadoPublicada - 1 ene 2004

Huella dactilar

turbulent flow
Turbulent flow
Agglomeration
Suspensions
derivation
quartz
potential energy
Quartz
slopes
Energy barriers
Potential energy
kinetics
Probability distributions
curves
estimates
Rate constants
Kinetics

Citar esto

Song Hu, Shaoxian ; Lu, S. ; Zhang, Y. ; Lopez-Valdivieso, A. ; Fort, T. / Aggregation rate of fine particles in turbulent flows. En: Journal of Dispersion Science and Technology. 2004 ; Vol. 25, N.º 1. pp. 67-74.
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Aggregation rate of fine particles in turbulent flows. / Song Hu, Shaoxian; Lu, S.; Zhang, Y.; Lopez-Valdivieso, A.; Fort, T.

En: Journal of Dispersion Science and Technology, Vol. 25, N.º 1, 01.01.2004, p. 67-74.

Resultado de la investigación: Contribución a una revistaArtículo

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AU - Lu, S.

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AU - Lopez-Valdivieso, A.

AU - Fort, T.

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