中国农业科技导报 ›› 2023, Vol. 25 ›› Issue (12): 111-120.DOI: 10.13304/j.nykjdb.2022.0601

• 智慧农业 农机装备 • 上一篇    

基于EDEM的餐厨垃圾组成颗粒间接触参数标定

于淼1,2(), 周海宾2, 丁京涛2, 程红胜2, 沈玉君1,2(), 范盛远2, 张曦2, 王健2, 徐鹏翔2, 程琼仪2   

  1. 1.黑龙江八一农垦大学工程学院,黑龙江 大庆 163319
    2.农业农村部规划设计研究院农村能源与环保研究所,农业农村部资源循环利用技术与模式重点实验室,北京 100125
  • 收稿日期:2022-07-18 接受日期:2022-11-22 出版日期:2023-12-15 发布日期:2023-12-12
  • 通讯作者: 沈玉君
  • 作者简介:于淼 E-mail:ym10946@163.com
  • 基金资助:
    北京市科技新星计划项目(Z191100001119063)

Calibration of Interparticle Contact Parameters of Kitchen Waste Composition Based on EDEM

Miao YU1,2(), Haibin ZHOU2, Jingtao DING2, Hongsheng CHENG2, Yujun SHEN1,2(), Shengyuan FAN2, Xi ZHANG2, Jian WANG2, Pengxiang XU2, Qiongyi CHENG2   

  1. 1.College of Engineering,Heilongjiang Bayi Agricultural University,Heilongjiang Daqing 163319,China
    2.Key Laboratory of Resource Recycling Technology and Model,Institute of Rural Energy and Environmental Protection,Institute of Planning and Design,Ministry of Agriculture and Rural Affairs,Beijing 100125,China
  • Received:2022-07-18 Accepted:2022-11-22 Online:2023-12-15 Published:2023-12-12
  • Contact: Yujun SHEN

摘要:

餐厨垃圾原料复杂,导致其好氧堆肥原料混合过程仿真研究中存在参数不易获取的问题。该研究通过物理堆积试验与EDEM仿真试验结合的方法对餐厨垃圾接触参数进行了标定,通过Plackett-Burman(P-B)试验对9个待标定参数进行显著性筛选。结果表明,颗粒滚动摩擦系数、Johnso-Kendall-Roberts(JKR)表面能、颗粒与几何体间静摩擦系数对餐厨垃圾堆积角的影响显著;采用爬坡试验和Box-Behnken(B-B)试验,获得显著影响参数的最优值区间与最优值组合:餐厨垃圾-餐厨垃圾滚动摩擦系数为0.11、JKR表面能为0.13 J·m-2、餐厨垃圾-不锈钢静摩擦系数为0.73。仿真试验验证结果平均相对误差为4.3%,说明标定餐厨垃圾接触参数具有可靠性。研究结果可为餐厨垃圾处理和资源化利用设备的仿真研究提供参考。

关键词: 餐厨垃圾, 离散元模拟, JKR模型, 接触参数标定, 堆积角

Abstract:

The complexity of kitchen waste raw materials leads to the problem that parameters are not easy to obtain in the simulation research of kitchen waste aerobic composting. This study calibrated the contact parameters of kitchen waste by combining physical accumulation test with EDEM simulation test. Plackett-Burman (P-B) test was used to screen the significance of 9 parameters to be calibrated. The results showed that the rolling friction coefficient between particles, Johnso-Kendall-Roberts (JKR) surface energy and the static friction coefficient between particles and geometry had significant effects on the stacking angle of kitchen waste. By using the climbing test and the Box-Behnken (B-B) test, the optimal value interval and the combination of the optimal values that significantly affected the parameters were obtained: the rolling friction coefficient of kitchen waste-kitchen waste was 0.11, the surface energy of JKR was 0.13 J·m-2, the static friction coefficient of kitchen waste-stainless steel was 0.73. The simulation results showed that the average relative error was 4.3%, and the calibration of the contact parameters of kitchen waste was reliable. This study could provide reference for simulation research of kitchen waste treatment and resource utilization equipment.

Key words: kitchen waste, discrete element simulation, Johoson-Kendall-Roberts model, contact parameter calibration, repose angle

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