Overview

Suspending solids in liquid through agitation is a feature of many processes. Examples are crystallisation, dissolution and waste water treatment. As is true for many multiphase systems, solids suspension is multi-scale in nature.

The behaviour of submillimeter particles is controlled by the flow generated by a thousand times larger impeller. Vice versa, the particles make themselves collectively feel at larger length scale by impacting the rheology of the solids-liquid mixture. Getting this length (and time) scale interaction right is a challenge for modelling and simulation approaches. It also is an opportunity. By using simulations to understand the details at small scale one can try and build closure models that properly account for the way micro-scale phenomena impact the macro scale.

The presentation will focus on examples rather than methodology to illustrate the subject of scale interaction as sketched above.

Speaker

Jos Derksen, Professor, University of Aberdeen

Jos was educated in the Netherlands where he obtained a PhD degree in Applied Physics from Eindhoven University of Technology in 1991.

After a short period with the Dutch Aerospace Laboratory (NLR), he joined Delft University of Technology in 1992. In 2007, he moved to the University of Alberta, Canada. In 2013, he came back to Europe to work with the University of Aberdeen (UK) and in 2014/2015 Delft University.

His research focuses on highly resolved simulations of multiphase flow and transport processes.

The material presented in this webinar has not been peer-reviewed. Any opinions are the presenter's own and do not necessarily represent those of IChemE or the Fluid Mixing Processes Special Interest Group. The information is given in good faith but without any liability on the part of IChemE.

Time

12:00–13:00 BST.

Software

The presentation will be delivered via GoToWebinar®. 
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You are advised to join the webinar at least ten minutes before the scheduled start time, to allow for your computer to connect.

Webinar archive

This webinar is free of charge and open to all to attend, but if you wish to access the slides and a recording to replay on demand then you'll need to be a member of the Fluid Mixing Processes Special Interest Group.