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首页> 外文期刊>Journal Of The South African Institute Of Mining & Metallurgy >Determination of the coefficients of restitution, static and rolling friction of Eskom-grade coal for discrete element modelling
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Determination of the coefficients of restitution, static and rolling friction of Eskom-grade coal for discrete element modelling

机译：确定离散元素建模的Eskom级煤的恢复力，静摩擦和滚动摩擦系数

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摘要

The aim of the project was to experimentally determine the coefficient of restitution, and static and rolling friction of Eskom-grade coal for discrete element modelling (DEM). These parameters will be used in further DEM studies to simulate the flow and behaviour of coal during conveyance. For the simulation to yield realistic results, the parameters for the different coal shapes identified in the samples were determined. DEM uses spherical particles, and it was found that the difference between the DEM default parameters and those measured is significantly different, by as much as 97%, which illustrates the importance of experimentally determining these parameters. The spherical particles in DEM can be used to construct the various coal shapes identified, and the parameters measured can be used to simulate realistic results. The conveyance system can then be optimized accordingly.
机译：该项目的目的是通过实验确定用于离散元素建模（DEM）的Eskom级煤的恢复系数以及静摩擦和滚动摩擦。这些参数将用于进一步的DEM研究中，以模拟运输过程中煤的流动和行为。为了使模拟产生真实的结果，确定了样品中确定的不同煤形的参数。 DEM使用球形颗粒，并且发现DEM默认参数与所测量的参数之间的差异显着差异高达97％，这说明了通过实验确定这些参数的重要性。 DEM中的球形颗粒可用于构造已识别的各种煤形，测得的参数可用于模拟实际结果。然后可以相应地优化输送系统。

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