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Optimization of tungsten particles spheroidization with different size in thermal plasma reactor based on numerical simulation
He, Jiaping1,2; Bai, Liuyang1; Jin, Hucheng1,2; Yuan, Fangli1
2016-11-01
发表期刊POWDER TECHNOLOGY
ISSN0032-5910
卷号302期号:NOV页码:288-297
摘要

Micro-size tungsten particles have been prepared by radio-frequency (RF) thermal plasma reactor. SEM images show that spheroidization ratio of small particles is obviously lower than that of big particles. Numerical model has been founded to simulate the spheroidization system to explain this phenomenon based on FLEUNT software. The calculation results indicate that small particles are easy to diffuse and 'back-mix', which will urge small particles to escape from the high temperature area, while big particles are flowing straightly through the high temperature area, as a result that small particles cannot absorb enough heat and cannot be spheroidized well. The forces of diffusion and 'back-mixing' are each radial velocity and axial velocity. With some calculations based on the change of each gas flow, it can be found that appropriate combinations of gas flow can improve the spheroidization ratio of small particles. (C) 2016 Elsevier B.V. All rights reserved.

关键词Tungsten Particles Spheroidization Numerical Simulation Thermal Plasma
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.powtec.2016.08.067
收录类别SCI
语种英语
关键词[WOS]HEAT-TRANSFER ; CFD ; PROGRESS ; POWDER ; ARMOR
WOS研究方向Engineering
WOS类目Engineering, Chemical
项目资助者National Natural Science Foundation of China (NSFC)(11535003)
WOS记录号WOS:000386420500029
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21583
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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He, Jiaping,Bai, Liuyang,Jin, Hucheng,et al. Optimization of tungsten particles spheroidization with different size in thermal plasma reactor based on numerical simulation[J]. POWDER TECHNOLOGY,2016,302(NOV):288-297.
APA He, Jiaping,Bai, Liuyang,Jin, Hucheng,&Yuan, Fangli.(2016).Optimization of tungsten particles spheroidization with different size in thermal plasma reactor based on numerical simulation.POWDER TECHNOLOGY,302(NOV),288-297.
MLA He, Jiaping,et al."Optimization of tungsten particles spheroidization with different size in thermal plasma reactor based on numerical simulation".POWDER TECHNOLOGY 302.NOV(2016):288-297.
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