Numerical calculation of london-van der waals adhesion force distributions for different shaped particles--颗粒学报PARTICUOLOGY

Sonnenberg, J.-P., & Schmidt, E. (2005). Numerical calculation of london-van der waals adhesion force distributions for different shaped particles. China Particuology, 3(1), 19-22. https://doi.org/10.1016/S1672-2515(07)60156-0

Numerical calculation of london-van der waals adhesion force distributions for different shaped particles

Jost-Peter Sonnenberg ^*, Eberhard Schmidt

Safety Technology/Environmental Protection, Department D, University of Wuppertal, 42097 Wuppertal, Germany

10.1016/S1672-2515(07)60156-0

Volume 3, Issues 1–2, April 2005, Pages 19-22

Received 5 January 2005, Accepted 1 February 2005, Available online 14 December 2007.

E-mail: sonne@uni-wuppertal.de

Highlights

Abstract

A basic method to calculate van der Waals dispersion force distributions for submicron superquadric particles in particle-wall systems is presented. The force distribution is achieved by rotating particles through a large number of arbitrary spatial orientations, each time keeping constant the contact distance to the wall surface while calculating the dispersion force. To accomplish this, the use of 2D particle shape suffices, that is, through using an inter-dimensional function, which has been determined previously. A further development of the method within digital image analysis may lead to possible applications to forecasting the macroscopic properties of particle systems, for example, flowability, agglomeration behavior or dispersibility. For small ranges of superquadric particle shapes, each with a different size, the way from determining the inter-dimensional function up to applying image analysis is shown in an example.

Graphical abstract

Keywords

dispersion force distributions; image analysis; superquadratic particle shapes

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