空化水喷丸工艺中喷嘴几何参数对空化行为影响的研究

韩冰; 赵刚; 王梓卉敏

doi:10.13433/j.cnki.1003-8728.2016.0510

空化水喷丸工艺中喷嘴几何参数对空化行为影响的研究

doi: 10.13433/j.cnki.1003-8728.2016.0510

1.
辽宁科技大学机械工程与自动化学院冶金设备及过程控制省重点实验室, 辽宁鞍山 114051

基金项目:

辽宁省高等学校优秀人才支持计划(LJQ2011025)与辽宁科技大学科研专项基金项目(2012TD03)资助

详细信息

作者简介:
韩冰(1975-),教授,博士,研究方向为机械工程,hanb75@126.com

计量
- 文章访问数: 149
- HTML全文浏览量: 27
- PDF下载量: 8
- 被引次数: 0
出版历程
- 收稿日期: 2014-06-03
- 刊出日期: 2016-05-05

Influence of Nozzle Geometric Parameter on Cavitation Behavior in Water-jet Cavitation Peening Processing

1.
Provincial Key Laboratory of Metallurgical Equipment and Process Control, School of Mechanical Engineering and Automation, Liaoning University of Science and Technology, Liaoning Anshan 114051, China

摘要

摘要: 空化水喷丸是利用微小空泡群在固体边界附近溃灭时产生的冲击波压力和微射流来强化金属材料表面,而这些空泡群则是由缩放型喷嘴产生的空化射流所提供。因此,缩放型喷嘴的空化性能可直接影响喷丸效果。利用FLUENT计算软件对缩放型喷嘴产生的淹没式空化水射流进行计算机模拟,并模拟分析了喷嘴喉部直径和喷嘴扩张角对流场中空化行为的影响,同时使用Fujifilm压敏试纸对垂直于空化水射流轴线的截面上的冲击压力场进行测量。结果表明,随着喷嘴喉部直径的增大或喷嘴扩张角的减小,流场中的整体汽含率会升高,试验测得的最高冲击压力高达300 MPa。
- 空化水喷丸 /
- 计算机模拟 /
- 缩放型喷嘴 /
- 汽含率
Abstract: Water-jet cavitation peening uses the shock wave pressure and micro-jet produced by the cavitation bubbles collapsing near the surface of materials to strengthen the material surface, the cavitation bubbles are provided by the submerged cavitating water jet generated by convergent-divergent nozzle. Therefore, the cavitation capability of convergent-divergent nozzle can affect the peening effect directly. With using FLUENT software,the computer simulation is applied to study the submerged cavitating water jets, and the influences of nozzle throat diameter and nozzle divergence angle on the cavitation behavior in the flow field are analyzed. The Fujifilm pressure-sensitive paper is applied to measure the pressure distribution on the section which is perpendicular to the axis of cavitating water jet. The results show that the vapor fraction in flow field rises with the nozzle throat diameter increasing or the nozzle divergence angle decreasing, and the measured pressure in the experiment is up to 300 MPa.
- computer simulation /
- convergent-divergent nozzle /
- pressure distribution /
- vapor fraction

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参考文献(15)

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