| Citation: | YAO Jun, ZENG Zihua, ZHOU Fang, et al. Investigation of behaviour of particle impact on material by impinging jet[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(11): 2266-2272. doi: 10.13700/j.bh.1001-5965.2017.0050(in Chinese)
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Particle-material impact is popular in the nature and industries. In this work, experimental measurement and numerical calculation were carried out to investigate the particle impinging jet effect on the behaviour of material (304 stainless steel). Herein, particle diameter, particle tracking trajectories, particle-wall collision point distribution were considered to study material loss and the phase change of material structure. In the experimental work, the measurements were carried out for material mass loss, material element X-ray diffractometry (XRD) analysis, surface micro-structure scanning electron microscopy (SEM) observation and so on. In addition, the behaviour of particle impinging jet impact on wall material was studied by numerical simulations. Particularly, flow fields, particle trajectories and wall material loss were obtained. The results show that particle collision point distribution is quite different from their tracking trajectories under particle impinging jet impact, which causes the wear zones on sample surface different from each other obviously. It is concluded that particle-wall impact will not only lead to material loss but also cause the phase change of material structure.
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