针对传统舰船水幕喷头射程短、覆盖面积小的问题，本文通过对其内部结构优化设计，采用CFD软件数值模拟，研究其工作过程中气体和液体的两相流动，计算得到喷头射流水幕的速度分布、流量、流量系数等喷射性能参数，获得其喷射规律和特性。分析表明：沿喷头出口轴线方向，水流速度随距离增加而减小，速度衰减速率也在减小；同尺寸大小喷嘴，水流出口速度随压力增大而增大；经优化设计后的水幕喷头可以显著提升喷射性能。研究结论对于工程设计具有重要的参考价值和指导意义。
In view of the short range and small coverage area of the traditional ship drencher nozzle, this paper studied the two-phase flow of gas and liquid in the working process of it, by using the numerical simulation in soft and optimizing design of its internal structure. In addition, the jet performance parameters such as velocity distribution, flow rate and flow coefficient of the nozzle jet water curtain were calculated, and the jet law and characteristics were obtained. The results showed that: the flow velocity and the velocity decay rate decrease with the increase of distance, along the axis direction of nozzle outlet; the flow outlet velocity will increase with the increase of pressure, if the size of nozzle is in the same; the jet performance of drencher nozzle can significantly improve after optimized design. These research conclusions have important reference value and guiding significance for engineering design.
2021,43(4): 8-12 收稿日期：2019-11-25
DOI：10.3404/j.issn.1672-7649.2021.04.002
分类号：U664.88
基金项目：江苏高校高技术船舶协同创新/江苏科技大学海洋装备研究院资助项目(HZ20190002)
作者简介：尹群(1964-),男,博士,教授,研究方向为船舶与海洋工程结构力学
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