Simulation and Validation of Discrete Element Parameter Calibration for Fine-Grained Iron Tailings
نویسندگان
چکیده
In order to improve the calculation efficiency of a discrete element EDEM (Discrete Element Method) numerical simulation software for micron particles, particle model is linearly enlarged. At same time, parameters amplified particles were calibrated according Hertz-Mindlin with JKR (Johnson-Kendall-Roberts) contact make have flow characteristics as actual particles. Actual tests utilized gather angle repose microfine iron tailings, which was then used reference value response surface studies based on from six factors connected fine tailings The Plackett-Burman test identify three that had significant effect rest angle: static friction factor; rolling and energy. Box-Behnken experiment establish second-order regression angle, optimized were: energy coefficient 0.459; particle-particle 0.393; dynamic 0.393, between 0.106. By entering into program, generated simulations compared real values, error 1.56%. obtained can be in fine-grained providing an There no discernible difference simulated angles.
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ژورنال
عنوان ژورنال: Minerals
سال: 2022
ISSN: ['2075-163X']
DOI: https://doi.org/10.3390/min13010058