Numerical study of dense powder flow in a rotating drum: Comparison of CFD to experimental measurements

Chatre, Lucas; Lemerle, Xavier; Bataille, Marc; Herbelet, Florian; Debacq, Marie; Nos, Jeremy; Saleh, Khashayar; Leturia, Mikel; Randriamanantena, Tojonirina

doi:10.1016/j.powtec.2024.119981

Powder Technology

2024

DOI: 10.1016/j.powtec.2024.119981

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Numerical study of dense powder flow in a rotating drum: Comparison of CFD to experimental measurements

Lucas Chatre,

Xavier Lemerle,

Marc Bataille

et al.

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DEM investigation on flow regime transition of cylindrical particle in a rotating drum

Chen,

Mei,

Zhang

et al. 2024

International Journal of Chemical Reactor Engineering

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A comprehensive understanding of the flow regime transition is a prerequisite for designing and operating the rotating drum, especially when dealing with non-spherical particles. In this study, the multi-sphere method was used to construct cylindrical particles. The optimal number of spherical elements for particles with different aspect ratios was determined in terms of kinetic energy, rotational kinetic energy, collision number, collision force, deformation and angle of repose. And the effects of filling rate, rotational speed and particle size on the macro- and micro-behavior of cylindrical particles were systematically investigated. The results show that when the aspect ratio of cylindrical particle is 2, 3 and 4, the optimal number of spherical elements are 5, 8, and 10, respectively. Four flow structures, namely rolling, cascading, cataracting and centrifuging, were identified with the increase of the rotation speed, but the transition boundary from rolling to cascading is not clear due to the irregular particle shape. Three flow structures, namely slipping, transition, and cascading, were identified with the increase of the filling degree. The transition diagram of flow regime was established. The results show that the aspect ratio has a great influence on the flow transition from slipping to cascading regime. The area covered by the transition flow regime expands as the aspect ratio increases, necessitating a greater filling degree to achieve a stable rolling flow regime.

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DEM investigation on flow regime transition of cylindrical particle in a rotating drum

Chen,

Mei,

Zhang

et al. 2024

International Journal of Chemical Reactor Engineering

View full text Add to dashboard Cite

show abstract

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Numerical study of dense powder flow in a rotating drum: Comparison of CFD to experimental measurements

Cited by 1 publication

References 59 publications

DEM investigation on flow regime transition of cylindrical particle in a rotating drum

DEM investigation on flow regime transition of cylindrical particle in a rotating drum

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