This section presents selected patented methods and technologies developed to validate Discrete Element Method (DEM) simulations in bulk material transport systems. These patents demonstrate real-world applicability and scientific accuracy, supporting the methods published in the book Discrete Element Method in the Design of Transport Systems.
Device for Reducing the Effects of the Abrasive Flow of Bulk Material
This patented device helps minimize wear and damage caused by abrasive bulk material flows, making it highly relevant for DEM-based durability studies and long-term equipment optimization.
Citation (Patent):
Gelnar, D., Zurovec, D., Zegzulka, J., Necas, J. & Rozbroj, J. Device for reducing the effects of the abrasive flow of bulk material. VŠB-Technical University of Ostrava, 2019.
Wave Conveyor for Processing and Transporting Material by Waves
A novel transport method that moves material through oscillating wave-like motion. Used to study particle behavior in DEM simulations under alternative flow conditions.
Citation (Patent):
Gelnar, D., Zegzulka, J., Necas, J. & Rozbroj, J. Wave conveyor for processing and transporting material by waves. VŠB-Technical University of Ostrava, 2020.
Validation Device for Measuring Static and Dynamic Angle of Discharge
This method measures static and dynamic angles of repose, a critical input for DEM model calibration. Widely referenced in both industrial practice and scientific literature.
Citation (Patent):
Gelnar, D., Zegzulka, J., Soos, L., Juchelkova, D. & Necas, J. Validation Device and Method of Measuring Static and Dynamic Angle of Discharge. VŠB-Technical University of Ostrava, 2016.
Related Article:
Zegzulka, J., Gelnar, D., Jezerska, L. et al. Characterization and flowability methods for metal powders. Sci Rep 10, 21004 (2020). https://doi.org/10.1038/s41598-020-77974-3
External Links:
- The angle of repose | stavebni-technika.cz
- The angle of repose – Google-translated version
- Scientific Reports: Metal powders
Method and Device for Modeling Mechanical Processes – Vibratory Conveyor
This invention simulates the kinetics of particle movement in vibratory transport systems, essential for dynamic DEM validation of non-linear flow.
Citation (Patent):
Gelnar, D., Zegzulka, J., Necas, J. & Juchelkova, D. Method of modeling mechanical processes of bulk materials and device for making the same. VŠB-Technical University of Ostrava, 2015.
Related Article:
Gelnar, D., Prokeš, R., Jezerska, L. et al. Wood pellets transport with vibrating conveyor: experimental for DEM simulations analysis. Sci Rep 11, 16606 (2021).
External Links:
Validation Bucket Elevator for Modeling Mechanical Processes
A patented test rig specifically designed for DEM-based study of bucket elevator dynamics and mechanical modeling of bulk flow.
Citation (Patent):
Gelnar, D., Zegzulka, J., Necas, J. & Juchelkova, D. Validation bucket elevator for modeling mechanical processes and method of modeling mechanical processes. VŠB-Technical University of Ostrava, 2014.
Citation (Book):
Gelnar, D. & Zegzulka, J. Discrete Element Method in the Design of Transport Systems. Verification and Validation of 3D Models. Springer, 2019.
Method of Simulating Kinetics of Movement of Bulk Material Particles
One of the foundational patents for simulating kinetic energy, velocity, and particle interactions in DEM environments.
Citation (Patent):
Zegzulka, J., Bortlík, P., Dokoupil, O., Brazda, R. & Necas, J. Method of simulating kinetics of movement of bulk material particles and device for making the same. VŠB-Technical University of Ostrava, 2012.
Citation (Book):
Zegzulka, J. Mechanics of Bulk Materials. VŠB-Technical University of Ostrava, 2004. ISBN 80-248-0699-1.
External links:
- Mechanics of bulk materials
- Mechanics of Bulk Materials – Book Chapter: Flow Disorder
- Bachelor thesis: Gelnar, D. Reconstruction Design of the Clinker Tank, VŠB-TUO, 2004.
