| 刘梦迪，王应彪，王周梅，张超宇，李九峰.基于CFD-DEM耦合仿真的气吸式核桃定向
摆放装置的设计与试验[J].中国油脂,2026,51(1):.[LIU Mengdi, WANG Yingbiao, WANG Zhoumei,
ZHANG Chaoyu, LI Jiufeng.Design and experiment of air-suction walnut directional placement device based on CFD-DEM coupling simulation[J].China Oils and Fats,2026,51(1):.] |
| 基于CFD-DEM耦合仿真的气吸式核桃定向
摆放装置的设计与试验 |
| Design and experiment of air-suction walnut directional placement device based on CFD-DEM coupling simulation |
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| DOI：10.19902/j.cnki.zgyz.1003-7969.240190 |
| 中文关键词: 核桃 气吸式 定向摆放 CFD-DEM |
| 英文关键词:walnut air-suction directional placement CFD-DEM |
| 基金项目:国家自然科学基金项目(52165038)；云南省教育厅科学研究基金项目(2022Y574)；云南省农业联合专项(202101BD07001-062) |
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| 摘要点击次数: 1265 |
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| 中文摘要: |
| 为确保核桃在吸附摆放过程中的姿态固定，设计一种气吸式核桃定向摆放装置。利用CFD-DEM气固两相耦合仿真方法对核桃定向摆放的工作过程进行分析，以核桃与吸口的距离、气流速度、负压强度为考察因素，定向合格指数为评价指标，采用单因素试验和响应面试验对核桃定向摆放装置的工作参数进行仿真优化，并结合实际试验验证定向吸附核桃的可行性。结果表明：核桃能被吸起的最低气流速度为25.5 m/s，最小负压强度为-93.6 kPa；影响定向合格指数的因素依次为气流速度、核桃与吸口的距离、负压强度；通过仿真优化和实际试验验证得到气吸式核桃定向摆放装置的最优工作参数为核桃与吸口的距离4 mm、气流速度27 m/s、负压强度-98 kPa，此时平均定向吸附成功率为95%。综上，气吸式核桃定向摆放装置满足核桃定向吸附摆放生产要求。 |
| 英文摘要: |
| In order to ensure that the walnut was fixed in the process of adsorption and placement, an air-suction walnut directional placement device was designed. The operational process of the walnut directional placement was analysed using CFD-DEM gas-solid coupled simulation methodology. Using the distance between walnut and suction port, airflow velocity, and negative pressure intensity as factors, the directional qualification index serving as the evaluation index, single-factor experiment and response surface methodology were employed to optimize the working parameters of the walnut directional placement device, thereby the feasibility of directional adsorption of walnut was validated combined with actual experiment. The results indicated that the minimum airflow velocity required to lift walnuts was 255 m/s, and the minimum negative pressure intensity was -93.6 kPa. Factors influencing the directional qualification index in descending order of significance was airflow velocity, the distance between walnut and suction port, and negative pressure intensity. Simulation results and experimental findings indicated that the optimal operating parameters for the air-suction walnut directional placement device were distance between walnut and suction port 4 mm, airflow velocity 27 m/s, and negative pressure intensity -98 kPa. Under these conditions, the average directional adsorption success rate reached 95%. In summary, the air-suction walnut directional placement device meets the production requirements for directional adsorption and placement of walnuts. |
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