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Article Dans Une Revue Physical Review E Année : 2020

Scaling behavior of particle breakage in granular flows inside rotating drums

Résumé

We perform systematic particle dynamics simulations of granular flows composed of breakable particles in a 2D rotating drum to investigate the evolution of the mean particle size and specific surface as a function of system parameters such as drum size, rotation speed, filling degree, and particle shape and size. The specific surface increases at a nearly constant rate up to a point where particle breakage begins to slow down. The rates of particle breakage for all values of system parameters are found to collapse on a master curve when the times are scaled by the characteristic time defined in the linear regime. We determine the characteristic time as a function of all system parameters, and we show that the rate of particle breakage can be expressed as a linear function of a general scaling parameter that incorporates all our system parameters. This scaling behavior provides a general framework for the upscaling of drum grinding process from laboratory to industrial scale.
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Dates et versions

hal-02569714 , version 1 (11-05-2020)

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Luisa Orozco, Jean-Yves Delenne, Philippe Sornay, Farhang Radjai. Scaling behavior of particle breakage in granular flows inside rotating drums. Physical Review E , 2020, E 101, pp.052904. ⟨10.1103/PhysRevE.101.052904⟩. ⟨hal-02569714⟩
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