The numerical simulation of rock fragmentation efficiency under self-excited oscillation pulsed jet

SI Hu1,2,XUE Yong-zhi1,2,ZHOU Wei1,2

Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (20) : 149-153.

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PDF(1371 KB)
Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (20) : 149-153.

The numerical simulation of rock fragmentation efficiency under self-excited oscillation pulsed jet

  • SI Hu1,2,XUE Yong-zhi1,2,ZHOU Wei1,2
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Abstract

Based on the Arbitrary Lagrangian-Eulerian fluid-solid coupling penalty function method, a model of rock breaking under self-excited oscillation pulsed jet was established. The result of numerical simulation was compared with experimental result under same condition to validate the model. In order to analyze the influence of pulse amplitude and pulse frequency on rock fragmentation efficiency relate to features of rocks, the process of self-excited oscillation pulsed jet impacting rock under different conditions was simulated according to its motion law. The results show that with the increase of pulse amplitude, the erosion depth has successively undergone rapid growth phase and gradual growth phase, while the erosion aperture basically remains unchanged, as a result, the rock fragmentation efficiency improves significantly. Besides, the results also show that with the increase of pulse frequency, the erosion depth decreases after the first increase, while the erosion aperture basically remains unchanged. Hence, it exists an optimal pulse frequency under which the rock fragmentation efficiency has a great improving. And different rocks have different optimal pulse frequency. The results of simulate process are identical with reality and had partly guiding significance to the engineering usage.
 

Key words

self-excited oscillation pulsed jet / rock fragmentation efficiency / pulse amplitude / pulse frequency

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SI Hu1,2,XUE Yong-zhi1,2,ZHOU Wei1,2. The numerical simulation of rock fragmentation efficiency under self-excited oscillation pulsed jet[J]. Journal of Vibration and Shock, 2016, 35(20): 149-153

References

[1] 王晖. 自振脉冲磨料水射流切割性能影响因素及矿用安全性分析[J]. 矿业研究与开发, 2012, 32(3): 69-73.
WANG Hui. Analysis on influence factors of cutting performance of self-vibration pulse abrasive water-jet and its application safety in mine [J]. MINING R & D, 2012, 32(3): 69-73.
[2] 李君, 高传昌. 自激脉冲射流技术研究与应用进展[J]. 南水北调与水利科技, 2013, 11(4): 187-191.
LI Jun, GAO Chuan-chang. Research and Application Progress of Self-excited Pulsed Jet Technology[J]. South-to-North Water Transfers and Water Science & Technology, 2013, 11(4): 187-191.
[3] 胡 东, 唐川林, 张凤华. 脉冲气液射流冲蚀特性实验分析[J]. 振动与冲击, 2013, 32(11): 141-144.
HU Dong, TANG Chuan-lin, ZHANG Feng-hua. Erosion characteristic of a pulsed air-water jet[J]. JOURNAL OF VIBRATION AND SHOCK, 2013, 32(11): 141-144.
[4] 唐川林, 胡东, 裴江红. 自激振荡脉冲射流动态特性的实验研究[J]. 水利水电技术, 2006, 37(12): 71-74.
 TANG Chuan-lin, HU Dong, PEI Jiang-hong. Experimental research on dynamic characteristics of the self-excited oscillation pulsed water jet[J]. Water Resources and Hydropower Engineering, 2006, 37(12): 71-74.
[5] CHAHINE G L, CONN A, JOHNSON V, et al. Cleaning and cutting with self-resonating pulsed water jets[A]. 1983: 195-205.
[6] FOLDYNA J, HEINIGER K, METTLER S, et al. Enhancing of water jet effects by pulsations[J]. Manufacturing Engineering, 2007, 6(4): 30-33.
[7] YUYONG L, RONGJUAN W, DAIJUN J, et al. Simulation and analysis of flow field in abrasive water jet nozzle[A]. The International Conference on Information Engineering and Mechanical Engineering (IEME 2011), April 16-18, 2011, Xian-ning China, 2011: 5219-5223.
[8] 廖振方, 唐川林. 自激振荡脉冲射流喷嘴的理论分析[J].重庆大学学报(自然科学版), 2002, 25(2): 24-27.
 LIAO Zhen-fang, TANG Chuan-lin. Theory of the Self-excited Oscillation Pulsed Jet Nozzle[J]. Journal of Chongqing University (Natural Science Edition), 2002, 25(2): 24-27.
[9] 裴江红, 廖振方, 唐川林. 自激振荡脉冲射流频率特性实验研究[J]. 中国机械工程, 2009, 20(1): 60-63.
 PEI Jiang-hong, Liao Zhen-fang, TANG Chuan-lin. Experimental Study on Characteristics of Self-excited Oscillation Pulsed Jet Nozzle[J]. China Mechanical Engineering, 2009, 20(1): 60-63.
[10] 葛兆龙, 周哲, 卢义玉, 等.影响自激振荡脉冲射流性能的喷嘴结构参数研究[J]. 四川大学学报(工程科学版), 2013, 45(5): 160-165.
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