Eindimensionale Modellierung und Simulation von Blasensäulenreaktoren

Reactor models that feature a practical way to design bubble columns on the (semi‐)industrial scale have been published only rarely in the scientific literature. Creating a one‐dimensional model in the equation‐oriented simulation software ASPEN Custom Modeler^TM, a compromise between model precision and modeling can be reached. The model quantitatively describes the processes in a bubble column reactor with sufficient accuracy.     

Enzymatisch katalysierte Reaktionen im Festbettreaktor – Modellierung und Simulation

Development of new processes in enzymatic synthesis is still slow due to a yet incomplete knowledge base. Therefore, the main goal of this work is to overcome this shortcoming by the simulation tool STEP (Simulation Tool for Enzymatic Processes). With its rigorous, transient models STEP gives the possibility for an accelerated fact based process development. The article deals with the development and experimental validation of STEP in depth.     

Verbesserte Simulation der Temperaturentwicklung von HT‐PEM‐Brennstoffzellen zur Effizienzsteigerung

Identification and prevention of large temperature gradients can extend the lifespan of fuel cells. Estimating the temperature distribution during operation is difficult because of the complex processes in the cell. Therefore, even with large computational power only small and simple flow field geometries can be calculated yet. The integration of a new mathematical formulation in commercial simulation software allows calculation and assessment of complex geometries in order to increase their efficiency and lifespan.     

Modellierung und Simulation von Filtrations‐, Regenerations‐ und Umlagerungseffekten in Gasfiltersystemen am Beispiel eines Dieselruß‐Partikelfilters

The drastic tightening of regulations regarding emission limits of motor vehicles demands for an efficient exhaust gas treatment of diesel motor engines. One potential concept is an integrated diesel soot filter within the exhaust gas system. Basic requirement for a safe filter system operation is a fundamental comprehension of all involved individual processes. In this paper an experimentally validated CFD‐model describing the life cycle of a diesel root filter is presented. Its results can be used to fully exploit the potential of such filter systems and provide a basis for a variety of applications in the field of gas filtration.