Coefficient of tangential restitution for non-spherical particles

Wedel J, Hriberšek M, Steinmann P, Ravnik J (2024)

Publication Type: Journal article

Publication year: 2024


Book Volume: 437

Article Number: 119526

DOI: 10.1016/j.powtec.2024.119526


In various industrial and naturally occurring multiphase flows, whether dilute or dense, particle interaction plays a crucial role. In most cases, the particles are non-spherical, which poses a computational challenge in terms of particle motion and particle interaction, i.e. both particle–particle and particle–wall collisions. In this study, we present a novel frictional particle collision model to be used in general fluid flows. The model is derived for superellipsoidal particle shapes and thus allows consideration of frictional collisions of a wide variety of particle geometries. In this context, we derive an expression for the tangential coefficient of restitution applicable to arbitrarily shaped particles. Furthermore, we present the performance of the novel model by applying it to demonstrative examples ranging from two- to multi-particle systems.

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Wedel, J., Hriberšek, M., Steinmann, P., & Ravnik, J. (2024). Coefficient of tangential restitution for non-spherical particles. Powder Technology, 437.


Wedel, Jana, et al. "Coefficient of tangential restitution for non-spherical particles." Powder Technology 437 (2024).

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