Particle-wall and particle-particle contact interactions occur in many different processes of particle technology, like fluidized bed, filtration, milling and hydraulic and pneumatic conveying. During the contact, many different micromechanical processes, such as adhesion, elastic and plastic deformation, friction, sticking, attrition and breakage can occur and influence macroscopical behavior of particulate system in the process. Our research group Particle Micromechanics focuses on the experimental estimation and modeling of the micromechanical properties of particles and agglomerates.
The contact behavior of particles is investigated experimentally with compression tests, nanoindentation, tribological measurements and collision tests. On the basis of measured behavior the contact models are developed. The obtained properties are used as parameters of contact models in the discrete element method. Within the collaborative research center 926 (MICOS, subproject A08), the dynamic particle-wall interactions are investigated depending on the surface morphology and liquid layers with single particle collision tests. The influence of vibration on the flow behavior of granular pastes, such as gypsum and fresh concrete, is investigated experimentally and numerically in cooperation with our partners at the University of Nancy (France). The obtained results can be used for the optimization of the transport behavior of the pastes.
 

Contact: M.Sc. Fabian Krull

• Grohn, P., Oesau, T., Heinrich, S., Antonyuk, S.: Investigation of the influence of wetting on the particle dynamics in a fluidized bed rotor granulator by MPT measurements and CFD-DEM simulations, Powder Technology 408 (2022) 117736 https://doi.org/10.1016/j.powtec.2022.117736

• Aleksieieva, O., Dereviankina, L., Breuninger, P., Bozoglu, M., Tretiakov, P., Toporov, A., Antonyuk, S.: Simulation of particle interaction with surface microdefects during cold gas-dynamic spraying, Coatings 12(9) (2022) 1297, https://doi.org/10.3390/coatings12091297

• Grohn, P., Oesau, T., Antonyuk, S., Heinrich, S.: Investigation of the influence of impact velocity and liquid bridge volume on the maximum liquid bridge length, Advanced Powder Technology 33 (2022) 6, 103630, https://doi.org/10.1016/j.apt.2022.103630
• Oesau, T., Grohn, P., Pietsch-Braune, S., Antonyuk, S., Heinrich, S.: Novel approach for measurement of restitution coefficient by magnetic particle tracking, Advanced Powder Technology 33(1) (2022) 103362, https://doi.org/10.1016/j.apt.2021.11.014

• Krull, F., Mathy, J., Breuninger, P., Antonyuk, S.: Influence of the surface roughness on the collision behavior of fine particles in ambient fluids, Powder Technology 392 (2021), 58-68, https://doi.org/10.1016/j.powtec.2021.06.051

• Hesse, R., Krull, F., Antonyuk, S.: Prediction of random packing density and flowability for non-spherical particles by deep convolutional neural networks and Discrete Element Method simulations, Powder Technology 393 (2021), 559-581, https://doi.org/10.1016/j.powtec.2021.07.056

• Hesse, R., Krull, F., Antonyuk, S.: Experimentally calibrated CFD-DEM study of air impairment during powder discharge for varying hopper configurations, Powder Technology (2020), https://doi.org/10.1016/j.powtec.2020.05.113

• Deshpande, R., Antonyuk, S., Iliev, O.: DEM-CFD study of the filter cake formation process formed due to non-spherical particles, Particuology (2020), https://doi.org/10.1016/j.partic.2020.01.003

• Grohn, P., Weis, D., Thommes, M., Heinrich, S., and S. Antonyuk, Contact behavior of MCC pellets depending on their water content, Chem. Eng. Technol. (2020), https://doi.org/10.1002/ceat.201900517

• Breuninger, P., Krull, F., Huttenlochner, K., Müller-Reno, C., Ziegler, C., Merz, R., Kopnarski, M., Antonyuk, S.: Microstructuring of steel surfaces via cold spraying with 316L particles for studying the particle-wall collision behavior, Surface and Coatings Technology 379 (2019) 125054, https://doi.org/10.1016/j.surfcoat.2019.125054

• Weis, D., Krull, F., Mathy, J., Evers, M., Thommes, M., Antonyuk, S.: A contact model for the deformation behaviour of pharmaceutical pellets under cyclic loading, Advanced Powder Technology 30 (2019) 2492-2502, https://doi.org/10.1016/j.apt.2019.07.026

• Deshpande, R., Antonyuk, S., Iliev, O.: Study of the filter cake formed due to the sedimentation of mono and bi-dispersed particles using DEM-CFD simulations, AIChE Journal 65, (2019) 4, 1294-1303 https://doi.org/10.1002/aic.16529

• P. Breuninger, F. Krull, K. Huttenlochner, C. Müller-Reno, C. Ziegler, R. Merz, M. Kopnarski, S. Antonyuk: Microstructuring of steel surfaces via cold spraying with 316L particles for studying the particle-wall collision behavior, Surface and Coatings Technology (2019), Available online 08.10.2019, https://doi.org/10.1016/j.surfcoat.2019.125054

• F. Krull, R. Hesse, P. Breuninger, S. Antonyuk: Impact behaviour of microparticles with microstructured surfaces: Experimental study and DEM simulation, Chemical Engineering Research and Design 135 ( 2018), 175-184, https://doi.org/10.1016/j.cherd.2018.05.033

• P. Breuninger, D. Weis, I. Behrendt, P. Grohn, F. Krull, S. Antonyuk: CFD-DEM simulation of fine particles in a spouted bed apparatus with a Wurster tube, Particuology 42 (2019), 114-125, https://doi.org/10.1016/j.partic.2018.03.015

• F. Krull, P. Breuninger, S. Antonyuk. "Dynamic interactions of polystyrene particles with microstructured surface manufactured by cold spray." EPJ Web of Conferences. Vol. 140. EDP Sciences 140 (2017), https://doi.org/10.1051/epjconf/201714013011

• DEM simulations with multipshere method

• Coupled CFD-DEM

• FEM