激波管驱动石英砂颗粒抛洒的数值模拟

张晓立; 解立峰; 洪滔; 董贺飞

doi:10.11858/gywlxb.2014.01.016

激波管驱动石英砂颗粒抛洒的数值模拟

doi: 10.11858/gywlxb.2014.01.016

张晓立^1,,
解立峰²,
洪滔^1,*, ,,
董贺飞¹

1.
北京应用物理与计算数学研究所，北京 100094
2.
南京理工大学化工学院，江苏南京 210094

基金项目: 国家自然科学基金委-中国工程物理研究院NSAF联合基金(10676120);中国工程物理研究院科学技术基金重点项目(2012A0101004);中国工程物理研究院科学技术基金(2013B0101014)

详细信息

作者简介:
张晓立(1979-), 男, 博士, 助理研究员, 主要从事冲击动力学研究.E-mail:zhang_xiaoli@iapcm.ac.cn

通讯作者:
洪滔(1965-), 男, 博士, 研究员, 主要从事计算流体力学研究.E-mail:hongtao@iapcm.ac.cn

中图分类号: O359;O354.5
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出版历程
- 收稿日期: 2011-12-02
- 修回日期: 2012-04-04

Numerical Simulation of Quartz Sand Dispersion under Shock Tube Loading

1.
Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
2.
Institute of Chemical Technology, Nanjing University of Science and Technology, Nanjing 210094, China

摘要

摘要: 为了研究激波驱动下固体颗粒的抛洒问题，采用FLUENT的离散相模型，对不同直径(2.00~3.00 mm、0.80~1.10 mm和0.42 mm)、质量均为5 g的石英砂颗粒在激波管加载下抛洒的气-固两相流动过程进行了数值模拟，得到了石英砂颗粒云团的中心颗粒在抛洒过程中不同时刻沿激波加载方向的平均速度和平均位移，并与实验结果进行了对比。结果表明，两者的吻合度较好，只是由于计算模型中未考虑滤网，并且假定激波管纸膜为瞬间破裂，因此导致数值模拟得到的平均速度和平均位移略高于实验值。
- 激波管 /
- 石英砂 /
- 抛洒 /
- 数值模拟
Abstract: In order to study the dispersion of solid particle under the loading of shock tube, a numerical simulation of the dispersion of quartz sand with a mass of 5 g and different diameters of 2.00-3.00 mm, 0.80-1.10 mm and 0.42 mm respectively was carried out by means of DPM (dispersion phase model) of FLUENT.For the particles in the center of the quartz sand cloud during the dispersion, the average velocity and the average displacement along the loading direction were obtained.The numerical simulation results have a good agreement with the experimental results.Compared with the experimental results, the simulation result is slightly larger, probably because the dissipation energy on the sieve is ignored in the numerical simulation and the paper film of shock tube is considered to be ruptured instantaneously in the assumption.
- shock tube /
- quartz sand /
- disperse /
- numerical simulation

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图 1 激波管驱动石英砂颗粒抛洒装置示意图

Figure 1. Schematic map of a quartz sand dispersion device with a shock tube

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图 2 不同直径的石英砂颗粒的平均位移

Figure 2. Average displacements of quartz sand with different diameters

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图 3 计算网格图

Figure 3. Calculation grid

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图 4 直径为2.00~3.00 mm的颗粒抛洒轨迹

Figure 4. Dispersion trajectory of the particles with the diameter of 2.00-3.00 mm

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图 5 直径为2.00~3.00 mm的颗粒抛洒高速摄影照片

Figure 5. High speed photographs of the particles with the diameter of 2.00-3.00 mm during dispersion

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图 6 不同直径的选定颗粒在激波加载方向上的速度

Figure 6. Velocities along the loading direction for the selected particles with different diameters

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图 7 直径为0.80~1.10 mm的颗粒抛洒轨迹

Figure 7. Dispersion trajectory of the particles with the diameter of 0.80-1.10 mm

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图 8 直径为0.42 mm的颗粒抛洒轨迹

Figure 8. Dispersion trajectory of the particles with the diameter of 0.42 mm

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图 9 不同直径的颗粒沿激波加载方向的平均位移计算值与实验值比较

Figure 9. Comparison between the calculated and experimental average displacements along the loading direction for different diameters of quartz sand

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表 1 激波管驱动石英砂颗粒抛洒的实验参数

Table 1. Experimental parameters of the quartz sand dispersion under shock tube loading

Shot No.	Ma	D/(mm)	m/(g)	v/(m/s)
1	1.47	2.00-3.00	5	21.52
2	1.47	0.80-1.10	5	24.24
3	1.47	0.42	5	27.40

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参考文献(8)

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