| 煤仓内煤散料流动状态与力学行为影响因素 |
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| 引用本文： | 王学文,QIN Yi,TIAN Yan-kang,YANG Xin-yu,杨兆建.煤仓内煤散料流动状态与力学行为影响因素[J].计算力学学报,2016,33(5):773-778. |
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| 作者姓名： | 王学文 QIN Yi TIAN Yan-kang YANG Xin-yu 杨兆建 |
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| 作者单位： | 1. 太原理工大学 机械工程学院 煤矿综采装备山西省重点实验室,太原,030024;2. 思克莱德大学 设计制造与工程管理系，格拉斯哥 G1 1 XQ，英国 |
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| 基金项目： | 国家自然科学基金（51105266）；国家留学基金（201308140087）；山西省高等学校创新人才支持计划（2014）资助项目. |
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| 摘 要： | 针对煤仓内煤散料流动问题及其力学行为,采用三维颗粒流模拟程序PFC3D建立了某型号煤仓与某种煤散料的离散元模型,简述了其力学模型与求解步骤,模拟分析了煤仓内煤散料卸料流动状态。通过分析水平向侧压力、颗粒速度场和接触力场,重点讨论了煤仓下部锥体内壁面摩擦系数、锥仓倾角和卸料口径等对煤散料颗粒流动状态和力学行为的影响。结果显示,深仓卸料流动为整体流动与中心流动混合状态,煤仓内壁摩擦系数、锥体倾角和卸料孔开口半径均对煤散料流动和水平侧压力有较大影响。
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| 关 键 词： | 煤仓 散料 颗粒 流动 侧压力 离散元 |
| 收稿时间： | 2015/6/4 0:00:00 |
| 修稿时间： | 2015/9/24 0:00:00 |
Flow pattern simulation and flow mechanical behavior influencing factors analysis of granular materials in silos |
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| WANG Xue-wen,QIN Yi,TIAN Yan-kang,YANG Xin-yu,YANG Zhao-jian.Flow pattern simulation and flow mechanical behavior influencing factors analysis of granular materials in silos[J].Chinese Journal of Computational Mechanics,2016,33(5):773-778. |
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| Authors: | WANG Xue-wen QIN Yi TIAN Yan-kang YANG Xin-yu YANG Zhao-jian |
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| Institution: | Shanxi Key Laboratory of Fully Mechanized Coal Mining Equipment, School of Mechanical Engineering, Taiyuan University of Technology, Taiyuan 030024, China;Department of Design, Manufacture, and Engineering Management, University of Strathclyde, Glasgow, G1 1XQ, Scotland, UK;Department of Design, Manufacture, and Engineering Management, University of Strathclyde, Glasgow, G1 1XQ, Scotland, UK;Department of Design, Manufacture, and Engineering Management, University of Strathclyde, Glasgow, G1 1XQ, Scotland, UK;Department of Design, Manufacture, and Engineering Management, University of Strathclyde, Glasgow, G1 1XQ, Scotland, UK;Shanxi Key Laboratory of Fully Mechanized Coal Mining Equipment, School of Mechanical Engineering, Taiyuan University of Technology, Taiyuan 030024, China |
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| Abstract: | Aimed at the flow and mechanical behavior of granular materials in silos,the discrete element models are built on a silo and its storage granular material using DEM software PFC3D.The mechanical model and solving steps are briefly covered,and the flow pattern of granular materials in silos is simulated.By studying the lateral pressure,particles velocity field and contact force field,the flow mechanical behavior influencing factors of friction coefficient,angle of inclination and discharging pore size are mainly discussed,aiming at the hoppers of silos.Results show that the granular material flow pattern in deep silos is a mixed pattern of overall flow and pipe flow.The friction coefficient,angle of inclination and discharging pore size have significant effects on the flow pattern and lateral pressure. |
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| Keywords: | silo granular material particle flow lateral pressure discrete element |
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