[1]李世伟①,王鹏程②,王正宏①,等.基于离散元方法的RDX-Al颗粒混合数值模拟分析[J].爆破器材,2017,46(05):13-17.[doi:10.3969/j.issn.1001-8352.2017.05.003]
　LI Shiwei,WANG Pengcheng,WANG Zhenghong,et al.Numerical Simulation of RDX-Al Particle Mixture by Discrete Element Method[J].EXPLOSIVE MATERIALS,2017,46(05):13-17.[doi:10.3969/j.issn.1001-8352.2017.05.003]
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基于离散元方法的RDX-Al颗粒混合数值模拟分析()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
46
期数:
2017年05
页码:
13-17
栏目:
基础理论
出版日期:
2017-09-25

文章信息/Info

Title:
Numerical Simulation of RDX-Al Particle Mixture by Discrete Element Method
文章编号:
5166
作者:
李世伟①; 王鹏程②; 王正宏①; 王彩玲③; 赵省向③; 陶宇浩②; 李建良②
①辽宁庆阳特种化工有限公司（辽宁庆阳，111002） 
②南京理工大学化工学院（江苏南京，210094）
③西安近代化学研究所（陕西西安，710065）
Author(s):
LI Shiwei①;  WANG Pengcheng②;  WANG Zhenghong①;  WANG Cailing③;  ZHAO Shengxiang③;  TAO Yuhao②;  LI Jianliang②
① Qingyang Chemical Industry Corporation (Liaoning Qingyang, 111002)
② School of Chemical Engineering, Nanjing University of Science and Technology (Jiangsu Nanjing, 210094)
③ Xian Modern Chemistry Research Institute (Shaanxi Xian, 710065)
关键词:
离散元方法; 二元颗粒; 变化率; 抄板
Keywords:
discrete element method;  two kinds of particles;  change rate;  copy board
分类号:
O439
DOI:
10.3969/j.issn.1001-8352.2017.05.003
文献标志码:
A
摘要:
基于离散元方法，以旋转筒内RDX-Al二元颗粒体系的搅拌过程为研究对象进行模拟。采用离散元软件（EDEM），首先研究RDX-Al二元颗粒各自随转速的变化趋势，并进一步得出二元颗粒变化率的特点，做出分布上的拟合，得出最吻合模拟试验的函数为指数函数。然后，将旋转筒细分为多个单元空间，考察旋转轴与单元空间之间的距离对二元颗粒混合效果的影响。结果表明:单元空间离旋转轴越远，即旋转半径越大，颗粒之间的变化率也就越快，越容易达到均匀状态。最后，考察加入抄板的影响，结果表明:RDX-Al二元颗粒趋于的稳定值分别发生了改变。
Abstract:
Stirring process of RDX-Al particles in rotating cylinder was simulated based on discrete element method. Discrete element method and related software (EDEM) was used. Trends of RDX particle or Al particle changing with rotation rate was studied at first. Change rate of the binary granular mixture and the fitting on the distribution could be obtained. Exponential function is the most suitable function. Then, the rotating cylinder was divided into multiple unit spaces. Effect of distance between rotation axis and unit space on mixture of the two kinds of particles was researched. Results show that the greater the distance (rotation radius), the faster the change rate between particles, the more evenly the mixture. Influence of copy board on the particle mixture in different situations was also tested. The change of number of particles in the whole rotating cylinder was estimated in the same way, and stable value of RDX-Al particles has been changed.

参考文献/References:

［1］耿凡, 徐大勇, 袁竹林,等. 滚筒干燥器中颗粒混合运动的三维数值模拟［J］. 应用力学学报,2008, 25（3）: 529-534.
 GENG F,XU D Y,YUAN Z L, et al.Three dimensional numerical simulation of mixing process of particles in rotary dryer［J］. Chinese Journal of Applied Mechanics, 2008, 25（3）: 529-534.
［2］LIU P Y, YANG R Y, YU A B. DEM study of the transverse mixing of wet particles in rotating drums［J］. Chemical Engineering Science, 2013, 86(5): 99-107.
［3］GUI N, YAN J, XU W K. DEM simulation and analysis of particle mixing and heat conduction in a rotating drum［J］. Chemical Engineering Science, 2013, 97(7): 225-234.
［4］HHER D, WIRTZ S, SCHERER V. A study on the influence of particle shape and shape approximation on particle mechanics in a rotating drum using discrete method［J］. Powder Technology, 2014, 253(2): 256-265.
［5］XU Y, XU C H, ZHOU Z. 2D DEM simulation of particle mixing in rotating drum: a parametric study［J］. Particuology, 2010, 8(2): 141-149.
［6］黄德财, 陆明, 赵省向. 旋转筒内黑索今和铝颗粒混合与分离的计算机模拟［J］. 计算物理,2011, 28（3）: 445-450.
 HUANG D C, LU M, ZHAO S X. Simulation of mixing and segregation of RDX and Al in a revolving drum［J］. Chinese Journal of Computational Physics, 2011, 28（3）: 445-450.
［7］吴家麟, 杨东英, 沈林勇,等.基于曲率数据的曲线拟合方法研究［J］. 应用科学学报，2003, 21（3）: 258-262.
WU J L, YANG D Y, SHEN L Y, et al.Research on the curvefitting method based on curvature data［J］.Journal of Applied Sciences, 2003, 21（3）: 258-262.
［8］HUANG D C, LU M, SUN G, et al. Ring-like spin segregation of binary mixtures in a high-velocity rotating drum［J］. Physical Review E Statistical Nonlinear & Soft Matter Physics, 2012, 85: 031305.

备注/Memo

备注/Memo:
收稿日期：2017-01-28
作者简介：李世伟（1971－），男，本科，高工，主要从事混合炸药的研究。E-mail：lsw@163.com
通信作者：王鹏程（1985－），男，副研究员，主要从事含能材料的研究。E-mail：alexwpch@mail.njust.edu.cn
更新日期/Last Update: 2017-09-25