[1]顾丛汇,张超,张鑫,等.散体颗粒在滚筒内运动特性的实验研究与数值模拟[J].东南大学学报(自然科学版),2015,45(3):491-496.[doi:10.3969/j.issn.1001-0505.2015.03.014]
 Gu Conghui,Zhang Chao,Zhang Xin,et al.Experimental study and numerical simulation on motion characteristics of granular particles in rotary dryer[J].Journal of Southeast University (Natural Science Edition),2015,45(3):491-496.[doi:10.3969/j.issn.1001-0505.2015.03.014]
点击复制

散体颗粒在滚筒内运动特性的实验研究与数值模拟()
分享到:

《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
45
期数:
2015年第3期
页码:
491-496
栏目:
其他
出版日期:
2015-05-20

文章信息/Info

Title:
Experimental study and numerical simulation on motion characteristics of granular particles in rotary dryer
作者:
顾丛汇12张超3张鑫1丁乃红3李斌2袁竹林1
1东南大学能源热转换及其过程测控教育部重点实验室, 南京210096; 2中国烟草总公司郑州烟草研究院烟草行业烟草工艺重点实验室, 郑州450001; 3安徽中烟集团, 合肥230088
Author(s):
Gu Conghui12 Zhang Chao3 Zhang Xin1 Ding Naihong3 Li Bin2 Yuan Zhulin1
1Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China
2Key Laboratory of Tobacco Processing Technology of China National Tobacco Corporation, Zhengzhou Tobacco Research Institute of China National Tobacco Corporation, Zhengzhou 450001, China
3Anhui Tobacco Institution, Hefei 230088, China
关键词:
散体颗粒 虚拟颗粒团 数值模拟
Keywords:
granular particles virtual particle numerical simulation
分类号:
TS43
DOI:
10.3969/j.issn.1001-0505.2015.03.014
摘要:
通过实验方法研究了不同转速下丝状散体颗粒在滚筒内的运动状态,并采用烟丝作为实验材料,测量其在滚筒内的停留时间.实验结果表明:滚筒烘丝机转速越大,颗粒在抄板的提升作用下运动越剧烈,做圆周运动的时间越少,从而导致颗粒在滚筒内的总停留时间越短.在该实验基础上利用“虚拟颗粒团”方法对滚筒内散体颗粒的运动过程进行数值建模,得到的模拟结果与实验数据吻合较好.因此,采用此数学模型模拟不同滚筒倾角条件下丝状颗粒在滚筒内的运动过程,模拟结果显示:滚筒倾角越大,丝状散体颗粒在抄板和滚筒壁面的综合作用下,纵向运动时间越少,颗粒在滚筒内停留时间越短.
Abstract:
The movement behaviors of filamentous granular particles in a rotary dryer with different rotational speeds were studied by experimental method. Cut-tobacco particles were employed as experimental material, and the residence time in rotary dryer was calculated. The results show that the higher the rotational speed, the more strenuous the movement of particles and the less the spent time on circular motion due to the effect by flights, which leads to a reduction of total residence time of particles in dryer. The virtual particle cluster method was applied to the simulation of particles movement based on the experiments. The simulation results are in good agreement with the experimental data. Therefore, based on this mathematical model, the movement of particles were investigated in a rotary dryer with different slopes of dryer. The simulation results indicate that the larger the slope of rotary dryer, the less the spent time on longitudinal movement because of the effect by both flights and the drum wall, and thus, the less the residence time of particles in the rotary dryer.

参考文献/References:

[1] Renstrom R. Mean residence time and residence time distribution when sawdust is dried in continuous dryers[J]. Drying Technology, 2008, 26(12):1457-1463.
[2] 黄志刚, 朱清萍, 朱慧, 等. 转筒干燥器内颗粒物料运动的模拟与试验研究[J]. 粮油加工与食品机械, 2004(11):65-66.
  Huang Zhigang, Zhu Qingping, Zhu Hui, et al. Simulation and test on particulate materials flow in rotary dryers[J]. Machinery for Cereals Oil and Food Processing, 2004(11):65-66.(in Chinese)
[3] 黄志刚, 毛志怀. 转筒干燥器的现状及发展趋势[J]. 食品科学, 2003, 24(8): 185-187.
  Huang Zhigang, Mao Zhihuai. Present situation and developing trend of rotary dryers[J]. Food Science, 2003, 24(8): 185-187.(in Chinese)
[4] 邓国栋, 王宏生, 李斌, 等. 滚筒烘丝机中烟丝运动的模拟与试验[J]. 烟草科技, 2007(9):13-17,32.
  Deng Guodong, Wang Hongsheng, Li Bin,et al. Simulation and test of cut tobacco movement in cylinder dryer[J]. Tobacco Science & Technology, 2007(9): 13-17,32.(in Chinese)
[5] 朱立平, 袁竹林, 闫亚明, 等. 基于离散单元法的丝状颗粒传热数学模型[J]. 化工学报, 2012, 63(7): 2051-2058.
  Zhu Liping, Yuan Zhulin, Yan Yaming,et al. Model of heat transfer in filamentous granular materials based on discrete element method[J]. CIESC Journal, 2012, 63(7): 2051-2058.(in Chinese)
[6] 朱立平, 袁竹林, 闫亚明, 等. 固定床中丝状颗粒的传热传质特性[J]. 化工学报,2013,64(8): 2736-2744.
  Zhu Liping, Yuan Zhulin, Yan Yaming,et al. Heat and mass transfer of filamentous particles in a fixed bed[J]. CIESC Journal, 2013, 64(8): 2736-2744.(in Chinese)
[7] Geng F, Li Y M, Wang X Y, et al. Simulation of dynamic processes on flexible filamentous particles in the transverse section of a rotary dryer and its comparison with ideo-imaging experiments[J]. Powder Technology, 2011, 207(1): 175-182.
[8] Geng F, Yuan Z L, Yan Y M, et al. Numerical simulation on mixing kinetics of slender particles in a rotary dryer[J]. Powder Technology, 2009, 193(1): 50-58.
[9] Sakai M, Koshizuka S. Large-scale discrete element modeling in pneumatic conveying[J]. Chemical Engineering Science, 2009, 64(3): 533-539.
[10] 勾宏图, 吴玖桓, 张衍国, 等. 垃圾炉内大颗粒运动特性的可视化实验研究[J]. 锅炉制造,2005, 3(1):8-10.
  Gou Hongtu, Wu Jiuxuan, Zhang Yanguo, et al. Visualized experimental research on motion of large particles in CFBI[J]. Boiler Manufacturing, 2005, 3(1):8-10.(in Chinese)
[11] Revol D, Briens C L,Chabagno J M. The design of flights in rotary dryers[J]. Powder Technology, 2001, 121(1/2): 230-238.
[12] Baker C G J. The design of flights in cascading rotary dryers[J]. Drying Technology, 1988, 6(4): 631-653.
[13] Chen P S, Pei D C T. A mathematical model of drying processes[J]. International Journal of Heat and Mass Transfer, 1989, 32(2): 297-310.
[14] 黄志刚, 朱慧, 朱清萍, 等. 转筒内物料滞留时间的研究[J]. 包装工程, 2007, 28(1): 106-107.
  Huang Zhigang, Zhu Hui, Zhu Qingping, et al. Study on residence time of materials in rotary dryers[J]. Packaging Engineering, 2007, 28(1): 106-107.(in Chinese)
[15] Friedman S J, Marshall W P. Studies in rotary drying.1. holdup and dusting[J]. Chemical Engineering Progress, 1949, 45(8): 482-493.
[16] Friedman S J, Marshall W P. Studies in rotary drying.2. heat and mass transfer[J]. Chemical Engineering Progress, 1949, 45(9): 573-588.
[17] 曹崇文,朱文学. 农产品干燥工艺过程的计算机模拟[M].北京:中国农业出版社,2000:74-79.
[18] 马晓录,张勇. 直热式转筒干燥过程物料停留时间理论推导[J]. 干燥技术与设备,2013,11(5): 25-31.
  Ma Xiaolu, Zhang Yong. Residence time calculation study of material in directly-heated rotary drying process[J]. Drying Technology & Equipment, 2013, 11(5): 25-31.(in Chinese)

备注/Memo

备注/Memo:
收稿日期: 2014-12-21.
作者简介: 顾丛汇(1990—),女,博士生;袁竹林(联系人),男,博士,教授,博士生导师,101004322@seu.edu.cn.
基金项目: 中国烟草总公司郑州烟草研究院烟草工艺重点实验室基金资助项目.
引用本文: 顾丛汇, 张超, 张鑫,等.散体颗粒在滚筒内运动特性的实验研究与数值模拟[J].东南大学学报:自然科学版,2015,45(3):491-496. [doi:10.3969/j.issn.1001-0505.2015.03.014]
更新日期/Last Update: 2015-05-20