Numerical simulation of internal flow field for post-mixed abrasive water jet descaling nozzle

被引：0

作者：

Liu, Guo-Yong ^{[1
]}

Wang, Kuan-Kuan ^{[1
]}

Chen, Xin-Xin ^{[2
]}

Dong, Li-Ming ^{[1
]}

Zhu, Dong-Mei ^{[1
]}

Zhang, Shao-Jun ^{[1
]}

机构：

[1] School of Mechanical Engineering, University of Science and Technology Beijing, Beijing

[2] The 601st Institute, The 6th Academy, China Aerospace Science and Industry, Hohhot

来源：

Gongcheng Kexue Xuebao/Chinese Journal of Engineering | 2015年 / 37卷

关键词：

Abrasive water jet; Feeding method; Numerical simulation; Post-mixing; Uniformity;

D O I：

10.13374/j.issn2095-9389.2015.s1.006

中图分类号：

学科分类号：

摘要：

For the shortcomings, such as low efficiency of jet energy and poor uniformity of water and abrasive in the post-mixed abrasive water jet descaling nozzle, three kinds of structures of the nozzle were put forward: the side feed nozzle, the tangential feed nozzle, and the parallel multi-jet nozzle. Based on the CFD Eulerian multiphase flow model, the 3-dimensional numerical simulation of the three kinds of structures was conducted with the FLUENT software. And the acting mechanism of the high-pressure water with the abrasive was analyzed through the velocity vector of the flow field inside the nozzle. The uniformity of the flow field was compared by analyzing the volume fraction contours of abrasive. Results show that compared with the side feed nozzle, the tangential feed nozzle and the parallel multi-jet nozzle can improve the mixing effect and obtain a rather uniform abrasive distribution. Whereas, the tangential feed nozzle can augment the internal wear of the nozzle, which needs a kind of more wear-resistant material. Compared with the former two structures, the mixing effect of the parallel multi-jet nozzle is perfect and the water jet flow as well as the acting mode could be adjusted according to the need in practical application. © All right reserved.

引用

页码：29 / 34

页数：5

共 11 条

[1]

Ren J.X., Physical Cleaning, (2000)

[2]

Cui M.S., Sun J.J., High Pressure Water Jet Technology, (1993)

[3]

Xue S.X., High Pressure Water Jet Technologies and Applications, (1998)

[4]

Ning Y.L., Hu S.G., Research progress of abrasive water jet, Lubr Eng, 1, (2002)

[5]

Zhao Y.Z., Gao F.Y., Wang C.L., Et al., Experimental research on the mechanism of cutting materials with rear fixed abrasive efflux, J Changshu College, 18, 2, (2004)

[6]

Yang X.L., Zhang Y.L., Wu C.X., Et al., Simulation research on flow field of abrasive jet in nozzle under condition of different mixing methods, J Liaoning Tech Univ Nat Sci, 27, 6, (2008)

[7]

Xiong J., Lei Y.Y., Yang Z.F., Et al., Visual research of flow field in the nozzle of abrasive water jet based on FLUENT, Lubr Eng, 33, 6, (2008)

[8]

Wan J.W., Niu Z.M., Liao W.L., Et al., Mixing mechanism of multiphase flow and acceleration performance in single inlet rear-mixed jet flow crushing, CIESC J, 64, 7, (2013)

[9]

Ma Y.J., Liang Z., Chen Z., Design of nozzle in abrasive jet for cutting drill pipe, Mach Des Manuf, 5, (2009)

[10]

Liu S.L., Zheng Q., Computational Fluid Dynamics, (1998)

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