靶距与冲击角对超高压水射流喷嘴水动力学性能影响的研究

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振动与冲击 ›› 2022, Vol. 41 ›› Issue (15) : 169-178.

论文

黄璐云1，陈正寿1，倪路新1，杜炳鑫1，陈源捷1，林森2

作者信息 +

Effects of target distance and impact angle on hydrodynamic performance of ultra-high pressure water jet nozzle

HUANG Luyun1, CHEN Zhengshou1, NI Luxin1, DU Bingxin1, CHEN Yuanjie1, LIN Sen2

Author information +

文章历史 +

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20-30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。
关键词：超高压水射流；喷嘴；靶距；冲击角；除锈

Abstract

As one of environmentally friendly and efficient derusting techniques, ultra-high pressure water jet derusting technique has the advantages of low energy consumption, low pollution and high efficiency, and is gradually applied in the ship building and repairing industries. Based on a CFD (computational fluid dynamics) method, the 3D simulations related to ultra-high pressure water jet derusting nozzles were performed, taking the liquid compressibility, cavitation effect and multiphase flow models into account. The influences of different standoff distances and jet angles on the hydrodynamic performance of ultra-high pressure water jet were analyzed by regarding the wall shear stress and pressure distributions on the target surface as important parameters. The distribution rules of the maximum wall shear stress and wall pressure on the target surface which is attributed to variation of the standoff distance and jet angle were summarized. It is found that the optimum nozzle jet angle range is 10°-16°, corresponding to the optimal standoff distance being 20-30 times of the nozzle diameter. The related research provides reference for the characteristic parameter design of the ultra-high pressure water jet derusting nozzle.
Key words: ultra-high pressure water jet; nozzle; standoff distance; jet angle; derusting

导出引用

黄璐云1，陈正寿1，倪路新1，杜炳鑫1，陈源捷1，林森2. 靶距与冲击角对超高压水射流喷嘴水动力学性能影响的研究[J]. 振动与冲击, 2022, 41(15): 169-178

HUANG Luyun1, CHEN Zhengshou1, NI Luxin1, DU Bingxin1, CHEN Yuanjie1, LIN Sen2. Effects of target distance and impact angle on hydrodynamic performance of ultra-high pressure water jet nozzle[J]. Journal of Vibration and Shock, 2022, 41(15): 169-178

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