This file was created by the TYPO3 extension bib --- Timezone: CET Creation date: 2021-02-12 Creation time: 13-26-32 --- Number of references 10 article Eisenschmidt2017 Computers & Chemical Engineering 2017 H.Eisenschmidt M.Soumaya N.Bajcinca S.<prt>Le Borne</prt> K.Sundmacher article LeBorne2016a Chemical Engineering Science 2016 139 61-74 10.1016/j.ces.2015.09.020 S.<prt>Le Borne</prt> H.Eisenschmidt K.Sundmacher article Temmel2016 Crystal Growth &amp;amp; Design 2016 in press, DOI: 10.1021/acs.cgd.6b00787 10.1021/acs.cgd.6b00787 E.Temmel H.Eisenschmidt K.Sundmacher H.Lorenz A.Seidel-Morgenstern article Kruggel-Emden2014 Chemical Engineering &amp;amp; Technology 2014 37 5 847&amp;amp;ndash;856 henomena related to sieving of non-spherical particles are investigated numerically in two batch apparatuses and on a horizontally aligned continuous sieve by particle-based simulation approaches in the framework of the discrete element method. The feed material is approximated by complex-shaped particles composed of clustered spheres. Comparisons are made with regard to the passage through the screen as well as the segregation and transportation on the screen. Results for passage are compared to data from literature, where simulations with spherical particles were performed of a laboratory-scale sieve operated with nonspherical quarry rock particles. Additionally, variations in screen inclination are investigated. Experimental results are matched by the simulations. A distinctive influence of particle shape on flow rates and residence times is identified. Discrete element method, Non-spherical particles, Sieving, Simulation 10.1002/ceat.201300649 HaraldKruggel-Emden FrederikElskamp article Borchert2014 Crystal Growth &amp;amp; Design 2014 14 3 952-971 http://dx.doi.org/10.1021/cg401098x 10.1021/cg401098x C.Borchert E.Temmel H.Eisenschmidt H.Lorenz A.Seidel-Morgenstern K.Sundmacher article Elskamp2014 Advanced Powder Technology 2014 In the recent past detailed particle-based simulation approaches such as the discrete element method (DEM) have become popular in addition to phenomenological models for the design and optimization of operating parameters of screening processes. As phenomenological process models, a large number of probabilistic and kinetic approaches of differing complexity are available which mostly provide information on the screening rate or efficiency. So far a review and comparative benchmarking of the various available screening process models has not been performed, although they are of high relevance, especially in industrial applications, due to their simplicity and easy use. To perform the benchmarking of batch screening process models, it is not relied on experimental investigations, but on detailed DEM-simulations involving both spherical and non-spherical particles in the investigation here. The DEM-simulations allow examining different particle characteristics such as size, shape, friction, as well as overall mass and size distribution. In addition, screen characteristics such as screen dimensions and surface as well as operational parameters including vibration frequency, stroke angle and amplitude are considered. On the basis of the DEM-simulations screening efficiencies are obtained which allow the adjustment and thereon benchmarking of the process models through parameters such as the residual particle mass on the screen. Batch screening; Discrete element method (DEM); Arbitrary shaped particles; Process models accepted 10.1016/j.apt.2014.11.001 FrederikElskamp HaraldKruggel-Emden misc Elskamp2014a 2014 For the design of screening processes detailed particle-based simulation approaches such as the discrete element method and various simpler phenomenological models are available. Among the latter, different probabilistic and kinetic models have been proposed and further extended. So far a benchmarking of the various available screening process models has not been performed. Therefore, a selection of screening process models is reviewed and benchmarked numerically by using detailed discrete element simulations of batch screening processes involving spherical and complex shaped particles in this investigation. Different particle characteristics such as size, shape, as well as overall mass are examined. In addition operational parameters including vibration frequency, stroke angle and amplitude are considered. The comparison is performed based on the stratification ability and parameters like the screening efficiency which are calculated over time. This comparative study will form the basis for the extension ofphenomenological models to represent dynamic processes during batch screening. Screening; Discrete element method; Complex shaped particles; Process models 7th World Congress on Particle Technology Beijing 7th World Congress on Particle Technology 2014 FrederikElskamp HaraldKruggel-Emden HendrikKomossa VictorScherer ManuelHennig UlrichTeipel misc Hennig2014 2014 Das dynamische Verhalten des Trenngrades von Schwingsieben bei Änderung des Massenstroms und der Partikelgrößenverteilung des Aufgabeguts wird untersucht. Auf der Basis vorhandener Modelle für den statischen Betrieb soll das dynamische Verhalten anhand der zeitabhängigen Trennfunktion analysiert werden. Hierfür werden im Rahmen zweier DFG-Teilprojekte des SPP 1679 „Dynamische Simulation vernetzter Feststoffprozesse“ zwei sich ergänzende Ansätze verfolgt. An der Technischen Hochschule Nürnberg wird die Partikelbewegung auf dem Siebboden untersucht. Hierzu wird den Einzelpartikeln mithilfe einer Hochgeschwindigkeitskamera eine Bahnkurve zugeordnet und der Einfluss der Eingangsparameter auf die Trennfunktion analysiert. Für die Parameterstudie wird ein Kreisschwingsieb eingesetzt. Der dynamische Einfluss bei sprungartiger und linearer Änderung des Massenstroms und der Dispersitätseigenschaften im Aufgabegut wird analysiert. In Kombination wird ein kinetisches oder wahrscheinlichkeitstheoretisches Modell für den dynamischen Betrieb ermittelt. An der Ruhr-Universität Bochum wird parallel die Modellierung der Siebklassierung mittels DEM durchgeführt. Wichtig ist die Parametervalidierungmittels realer Partikelbewegung und Trennfunktionen. Mithilfe von DEM-Simulationen sind Parameterstudien für Materialien mit unterschiedlichen Dispersitätseigenschaften möglich. DECHEMA-Jahrestagung Aachen, Deutschland DECHEMA-Jahrestagung 2014 10.1002/cite.201450646 ManuelHennig FrederikElskamp HaraldKruggel-Emden UlrichTeipel misc Kruggel-Emden2014a 2014 Continuous screening processes are of high relevance in industrial applications in case that a bulk solid isseparated based on particle sizes. Besides experimental investigations, process models or discrete element simulations can be applied for the numerical modeling of screening. In the investigation here a sensitivity analysis is performed for varying amplitudes, frequencies, stroke angles and feed rates of a continuous lab scale screening process. Thereby, a selection of representative particle shapes is considered and its influence on the throughput is analyzed. Continuous screening; Discrete element method; Complex shaped particles 12th International Conference of Numerical Analysis and Applied Mathematics Rhodos, Griechenland 12th International Conference of Numerical Analysis and Applied Mathematics 2014 HaraldKruggel-Emden FrederikElskamp misc Kruggel-Emden2013 2013 Sieving of complex shaped particles is investigated numerically in a batch and a horizontally aligned continuous sieving apparatus by discrete element simulations. The feed material is approximated by complex shaped particles composed of clustered spheres. Comparisons are made with regard to the passage through the screen. Results are compared to data from literature, where simulations of spherical particles were performed. Simulation, Sieving, Discrete Element Method, Complex shaped particles 13th European Symposium on Comminution &amp;amp; Classification ESCC Braunschweig 13th European Symposium on Comminution &amp; Classification ESCC 2013 HaraldKruggel-Emden FrederikElskamp