Simulation of the hydrodynamic behaviour of aggregated particles

Peukert W, Binder C, Thürey N, Schmid HJ, Rüde U (2006)

Publication Language: English

Publication Status: Published

Publication Type: Conference contribution, Conference Contribution

Publication year: 2006

Event location: Orlando, FL US

URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=80053693369&origin=inward

Abstract

The drag force on aggregates and partially sintered agglomerates is assessed using different techniques. In the free molecular regime - most relevant for nanoscaled particles in air at ambient or lower pressures - it has been shown that the projected area is very well representing the drag force of aggregates. In the continuum regime however, the projected area is not suitable to get a unique correlation with the drag force. This has been shown by applying two different techniques, namely the Lattice-Boltzmann Method (LBM) and Accelerated Stokesian Dynamics (ASD) to study the drag of agglomerates. Both methods have been compared in terms of accuracy and computational effort. It is shown that they give comparable results if all numerical parameters are controlled carefully. LBM requires a much higher computational effort, however, in contrast to ASD it is able to simulate partially sintered agglomerates as well. The results show that even a very small amount of sintering leads to a significant reduction in the drag force. The variation in drag force for single aggregates at different orientations or for the orientation averaged drag force of different aggregates of the same size is examined and discussed in both regimes.

Authors with CRIS profile

Wolfgang Peukert Lehrstuhl für Partikelsynthese (LFG) Ulrich Rüde Lehrstuhl für Informatik 10 (Systemsimulation) (LSS)

How to cite

APA:

Peukert, W., Binder, C., Thürey, N., Schmid, H.-J., & Rüde, U. (2006). Simulation of the hydrodynamic behaviour of aggregated particles. In Proceedings of the 2006 AIChE Spring National Meeting - 5th World Congress on Particle Technology. Orlando, FL, US.

MLA:

Peukert, Wolfgang, et al. "Simulation of the hydrodynamic behaviour of aggregated particles." Proceedings of the 2006 AIChE Spring National Meeting - 5th World Congress on Particle Technology, Orlando, FL 2006.

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