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Mean droplet size in stirred extraction columns. From 1D simulation to 3D FPM approach

: Wächtler, T.

Balle, Frank; Schryver, Christian de; Gerwalin, Sylvia; Kowalke, Thorsten; Kuhn, Thomas; Liebscher, André; Redenbach, Claudia; Steiner, Konrad ; Fraunhofer-Institut für Techno- und Wirtschaftsmathematik -ITWM-, Kaiserslautern; TU Kaiserslautern; Fraunhofer-Institut für Experimentelles Software Engineering -IESE-, Kaiserslautern:
Young Researcher Symposium, YRS 2013. Proceedings : 8. November 2013, Fraunhofer-Zentrum Kaiserslautern
Stuttgart: Fraunhofer Verlag, 2013
ISBN: 3-8396-0628-4
ISBN: 978-3-8396-0628-5
Young Researcher Symposium (YRS) <2, 2013, Kaiserslautern>
Fraunhofer ITWM ()

In this joint work, a single compartment of a Kühni miniplant column is simulated using the Finite Pointset Method (FPM) with a newly added Normalized Quadrature Method of Moments (NQMOM) as population balance model (DPBM) to account for the complex droplet-droplet interactions. The available interactions models are based on the energy dissipation and several adjustable parameters. To optimize these parameters for the later use of the computationally intensive three dimensional FPM simulation, a previously validated one dimensional inverse modelling was used. The estimated parameters were then applied to simulate the Kühni column which was experimentally investigated by Steinmetz at different rotational speeds. A comparision of the one dimensional simulation showed a good agreement with respect to the droplet size at different boundary conditions. A use of the estimated parameters for the three dimensional FPM simulation was possible due to the same average turbulent energy dissipation in both simulation tools. A final use of the estimated parameters for the three dimensional simulations, the newly developed FPM/DPBM simulation code, could predict the integral droplet size with good accuracy.