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Efficiency Analysis of the Discrete Element Method Model in Gas‐Fluidized Beds

Aghel, Babak ; Alobaid, Falah ; Graf, Christoph ; Epple, Bernd (2024)
Efficiency Analysis of the Discrete Element Method Model in Gas‐Fluidized Beds.
In: Chemical Engineering & Technology, 2024, 47 (1)
doi: 10.26083/tuprints-00027243
Artikel, Zweitveröffentlichung, Verlagsversion

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Kurzbeschreibung (Abstract)

The efficiency and accuracy of the Euler‐Lagrange/discrete element method model were investigated. Accordingly, the stiffness coefficient and fluid time step were changed for different particle numbers and diameters. To derive the optimum parameters for simulations, the obtained results were compared with the measurements. According to the results, the application of higher stiffness coefficients improves the simulation accuracy slightly, however, the average computing time increases exponentially. For time intervals larger than 5 ms, the results indicated that the average computation time is independent of the applied fluid time step, while the simulation accuracy decreases extremely by increasing the size of the fluid time step. Nevertheless, using time steps smaller than 5 ms leads to negligible improvements in the simulation accuracy, though to an exponential rise in the average computing time.

Typ des Eintrags: Artikel
Erschienen: 2024
Autor(en): Aghel, Babak ; Alobaid, Falah ; Graf, Christoph ; Epple, Bernd
Art des Eintrags: Zweitveröffentlichung
Titel: Efficiency Analysis of the Discrete Element Method Model in Gas‐Fluidized Beds
Sprache: Englisch
Publikationsjahr: 21 Mai 2024
Ort: Darmstadt
Publikationsdatum der Erstveröffentlichung: Januar 2024
Ort der Erstveröffentlichung: Weinheim
Verlag: Wiley-VCH
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Chemical Engineering & Technology
Jahrgang/Volume einer Zeitschrift: 47
(Heft-)Nummer: 1
DOI: 10.26083/tuprints-00027243
URL / URN: https://tuprints.ulb.tu-darmstadt.de/27243
Zugehörige Links:
Herkunft: Zweitveröffentlichung DeepGreen
Kurzbeschreibung (Abstract):

The efficiency and accuracy of the Euler‐Lagrange/discrete element method model were investigated. Accordingly, the stiffness coefficient and fluid time step were changed for different particle numbers and diameters. To derive the optimum parameters for simulations, the obtained results were compared with the measurements. According to the results, the application of higher stiffness coefficients improves the simulation accuracy slightly, however, the average computing time increases exponentially. For time intervals larger than 5 ms, the results indicated that the average computation time is independent of the applied fluid time step, while the simulation accuracy decreases extremely by increasing the size of the fluid time step. Nevertheless, using time steps smaller than 5 ms leads to negligible improvements in the simulation accuracy, though to an exponential rise in the average computing time.

Freie Schlagworte: Discrete element method, Euler‐Lagrange model, Gas‐fluidized bed, Particle‐grid method, Stochastic collision model
Status: Verlagsversion
URN: urn:nbn:de:tuda-tuprints-272431
Sachgruppe der Dewey Dezimalklassifikatin (DDC): 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau
Fachbereich(e)/-gebiet(e): 16 Fachbereich Maschinenbau
16 Fachbereich Maschinenbau > Institut für Energiesysteme und Energietechnik (EST)
Hinterlegungsdatum: 21 Mai 2024 13:50
Letzte Änderung: 22 Mai 2024 06:10
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