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<p>An innovative method of boundary modeling of dynamic spiral surface suitable for DEM is established. Leveraging the fact that helicoids are ruled surfaces, the core innovation of this method lies in performing “real-time local differential method” of the moving helical surface based on particle spatial coordinates and sizes to determine the positional relationship between particles and the moving boundary. This approach presents a significant advancement in addressing complex curved boundary problems in DEM simulation of the transport of granular materials in the screw conveyor, including the motion form of granular materials in the spiral conveyor, the distribution of particle motion velocity, and the motion trajectory of the particles with the longest residence time and the shortest residence time.</p>

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A brand-new geometric modeling to simulate the behavior of particles in a screw conveyor based on discrete element method

  • 期刊论文

  • 发表日期：

    2025年9月14日

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  • Bing Liu

摘要

An innovative method of boundary modeling of dynamic spiral surface suitable for DEM is established. Leveraging the fact that helicoids are ruled surfaces, the core innovation of this method lies in performing “real-time local differential method” of the moving helical surface based on particle spatial coordinates and sizes to determine the positional relationship between particles and the moving boundary. This approach presents a significant advancement in addressing complex curved boundary problems in DEM simulation of the transport of granular materials in the screw conveyor, including the motion form of granular materials in the spiral conveyor, the distribution of particle motion velocity, and the motion trajectory of the particles with the longest residence time and the shortest residence time.