摘要
超高压水射流除锈是一种环保高效的除锈技术,具有能耗低、污染小、效率高等优势,在修造船行业逐渐普及应用。基于CFD(computational fluid dynamics)技术,结合空化、多相流等多种模型,同时考虑液体的可压缩性,实施了超高压水射流除锈喷嘴三维仿真计算。将靶面剪切应力和打击压强分布作为重要参量,开展不同靶距和冲击角对超高压水射流动力学性能影响的分析,阐明了靶面最大剪切应力、打击压强分布规律与靶距和冲击角的关系,得出最佳冲击角范围为10°-16°,对应的最佳靶距为20倍-30倍的喷嘴直径。相关研究为超高压水射流除锈喷嘴喷射参数设计提供相应参考。
Ultra-high pressure water jet derusting is an environment-protecting and efficient derusting technique,it has advantages of low energy consumption,small pollution and high efficiency,and it is gradually popularized and applied in ship building and repairing industry.Here,based on computational fluid dynamics(CFD)method,combined with cavitation,multiphase flow and other models,considering the compressibility of liquid,the 3 D simulation calculation for ultra-high pressure water jet derusting nozzle was performed.Taking target surface shear stress and impact pressure distribution as important parameters,effects of different target distances and jet angles on dynamic performance of ultra-high pressure water jet were analyzed.Relations between target surface maximum shear stress,impact pressure distribution and target distance&jet angle were clarified.It was shown that the range of the optimal jet angle is 10°-16°,and the corresponding optimal target distance is 20-30 times of nozzle diameter;the study results can provide a reference for jet parametric design of ultra-high pressure water jet derusting nozzle.
作者
黄璐云
陈正寿
倪路新
杜炳鑫
陈源捷
林森
HUANG Luyun;CHEN Zhengshou;NI Luxin;DU Bingxin;CHEN Yuanjie;LIN Sen(Naval Architecture and Maritime College,Zhejiang Ocean University,Zhoushan 316022,China;The Paxocean Engineering Co.,Ltd.,Zhoushan 316057,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2022年第15期169-178,223,共11页
Journal of Vibration and Shock
基金
国家自然科学基金(41776105)
舟山市科技计划(2019C21010)
浙江省自然科学基金(LY20E090003)。
关键词
超高压水射流
喷嘴
靶距
冲击角
除锈
ultra-high pressure water jet
nozzle
target distance
jet angle
derusting
