激光技术2025，Vol.49Issue(3)：458-462,5.DOI:10.7510/jgjs.issn.1001-3806.2025.03.021
一种新型喷嘴结构对小尺度射流的影响
Influence of a new type of nozzle structure on small scale jet
张家铭 1甘志银1
作者信息
- 1. 华中科技大学 机械科学与工程学院,武汉 430074,中国
- 折叠
摘要
Abstract
In order to improve the stable length of small-scale water jets,relevant software and two-phase fluid volume model were used.By setting relevant parameters,a diameter of 60 μm～100 μm of water jet was simulated on computational fluid dynamics.The effective length of water jet in different scenarios was studied.A new type of nozzle structure for actively generating a gas protective layer was designed.The results indicate that,when the nozzle diameter is 100 μm,the pressure is below 30 MPa,the traditional method of forming a contracted water jet with sharp right angles is not feasible due to the influence of machining accuracy.A relatively stable water jet at a pressure of 0.7 MPa can be generated.This method has low processing difficulty and requires low pressure,which has the reference value for the design and manufacturing of nozzle structures in water guided laser processing.关键词
激光技术/水导激光/计算流体动力学/水射流Key words
laser technique/water-guided laser/computational fluid dynamics/water jet分类
金属材料引用本文复制引用
张家铭,甘志银..一种新型喷嘴结构对小尺度射流的影响[J].激光技术,2025,49(3):458-462,5.
