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CFD Simulation of Liquid-Liquid Extraction Columns and Visualization of Eulerian Datasets Hlawitschka, Mark W. Chen, Fang Bart, Hans-Jörg Hamann, Bernd computational fluid dynamics multiphase fluid droplet collision Eule- rian path-line In this joint work, a complete framework for modeling, simulating and visualizing multiphase fluid flow within an extraction column is presented. We first present a volume-of-fluid simulation, which is able to predict the surface of the droplets during coalescence. However, a fast and efficient model is needed for the simulation of a liquid-liquid extraction column due to the high number of occurring droplets. To simulate the velocity and droplet size in a DN32 extraction column, a coupled computational fluid dynamic-population balance model solver is used. The simulation is analyzed using path-line based visualization techniques. A novel semi-automatic re-seeding technique for droplet path-line integration is proposed. With our technique, path-lines of fluid droplets can be re-initialized after contact with the stirring devices. The droplet breakage is captured, allowing the engineer to improve the design of liquid-liquid columns layout. Schloss Dagstuhl – Leibniz-Zentrum für Informatik Mark W. Hlawitschka and Fang Chen and Hans-Jörg Bart and Bernd Hamann 2012 Is Part Of OASIcs, Volume 27, Visualization of Large and Unstructured Data Sets: Applications in Geospatial Planning, Modeling and Engineering - Proceedings of IRTG 1131 Workshop 2011 InProceedings Text doc-type:ResearchArticle publishedVersion application/pdf doi:10.4230/OASIcs.VLUDS.2011.59 urn:nbn:de:0030-drops-37410 https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.VLUDS.2011.59 eng https://creativecommons.org/licenses/by-nd/3.0/legalcode