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王博,王卫强,徐鑫. 渐缩型气动喷砂喷嘴冲蚀模拟分析[J]. 科学技术与工程, 2020, 20(1): 183-188.
wangbo.Erosion Simulation Analysis of Tapered Pneumatic Blasting Nozzle[J].Science Technology and Engineering,2020,20(1):183-188.
渐缩型气动喷砂喷嘴冲蚀模拟分析
Erosion Simulation Analysis of Tapered Pneumatic Blasting Nozzle
投稿时间:2019-05-07  修订日期:2019-09-06
DOI:
中文关键词:  气动喷砂 渐缩型喷嘴 流体仿真 颗粒冲蚀
英文关键词:Pneumatic blasting Tapered nozzle Fluid simulation Particle erosion
基金项目:辽宁省自然科学基金指导计划(20180550745);辽宁省公益研究基金(20170047)
        
作者单位
王博 辽宁石油化工大学
王卫强 辽宁石油化工大学
徐鑫 辽宁石油化工大学
摘要点击次数: 232
全文下载次数: 52
中文摘要:
      为研究气动喷砂枪喷嘴喷射颗粒对自身造成的冲蚀磨损情况,通过选取渐缩型气动喷砂喷嘴为研究对象,运用CFD软件对其内部流场及颗粒运动特性进行模拟分析;通过改变收缩角度、颗粒粒径及颗粒质量流率进一步分析影响喷嘴冲蚀速率变化的规律。结果表明:喷嘴的冲蚀区域主要集中在收缩段及收缩管与出口段交界面处;以收缩角度为30°、45°、60°的喷嘴为例,随收缩角度的增加,冲蚀区域出现“逆向发展”;随颗粒粒径的增加,喷嘴最大冲蚀速率呈现先下降后上升的“U”型变化趋势,且不同收缩角的喷嘴最大冲蚀速率取得最小值位置发生“滞后”现象;随颗粒质量流率的增加,喷嘴最大冲蚀速率呈上升趋势,但并未呈现线性关系。
英文摘要:
      In order to study the erosion wear caused by the sprayed particles of the pneumatic blasting gun nozzle, we used the tapered pneumatic blasting nozzle as the research object, and use CFD software to simulate the internal flow field and particle motion characteristics; The shrinkage angle, particle size and particle mass flow rate were further analyzed to affect the variation of nozzle erosion rate. The results show that the erosion area of the nozzle is mainly concentrated at the interface between the shrinkage section and the shrinkage tube and the outlet section. For example, nozzles with shrinkage angles of 30°, 45°, and 60°, as the shrinkage angle increases, the erosion area appears. "Reverse development"; with the increase of particle size, the maximum erosion rate of the nozzle shows a "U"-type change trend of decreasing first and then rising, and the maximum erosion rate of the nozzle with different shrinkage angles is "lag" at the minimum position; With the increase of particle mass flow rate, the maximum erosion rate of the nozzle is increasing, but there is no linear relationship.
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