再生式液体发射药火炮射流雾化特性研究  

Study on Jet Atomization Characteristics of Regenerative Liquid Propellant Gun

作　　者：马骏杰 刘宁[1] 梁雨霞 孙明亮[1] MA Junjie;LIU Ning;LIANG Yuxia;SUN Mingliang(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,Jiangsu,China)

机构地区：[1]南京理工大学机械工程学院,江苏南京210094

出　　处：《火炮发射与控制学报》2023年第3期35-41,共7页Journal of Gun Launch & Control

基　　金：装备预研国防重点实验室基金项目(6142A0302020517);江苏省研究生科研与实践创新计划项目(KYCX22_0486)。

摘　　要：为了研究再生式液体发射药火炮液体药再生喷射过程的雾化机理,搭建了可视化的再生式射流雾化实验平台,用高速摄像拍摄冷态下再生喷射过程的射流形态,观测了射流的雾化规律,为射流雾化机理研究提供了参考。在实验基础上,基于FLUENT流体仿真软件利用VOF模型对射流雾化的两相流问题进行了模拟。仿真结果表明,环形射流出喷口后逐渐向轴线聚并,环形射流湍流卷吸效应导致的负压区是其聚并的根本原因,压强是影响射流雾化质量的重要因素,压强越高,卷吸效应越明显,雾化质量越好。In order to study the atomization mechanism of the regenerative injection process of the regenerative liquid propellant gun,a visualized regenerative jet atomization experiment platform was built.The jet shape of the regenerative injection process in cold state was photographed by high-speed camera,and the jet atomization law was observed,which provided a reference for the study of jet atomization mechanism.Based on the experiment,the two-phase flow problem of jet atomization was simulated by VOF model based on FLUENT fluid simulation software.The simulation results show that the annular jet gradually coalescing to the axis after exiting the nozzle and the negative pressure zone caused by the turbulent entrainment effect of the annular jet is the fundamental reason.Pressure is an important factor affecting the quality of jet atomization,the higher the pressure,the more obvious the entrainment effect and the better the atomization quality.

关 键 词：液体发射药 射流雾化 有限体积法 可视化实验 

分 类 号：TJ302[兵器科学与技术—火炮、自动武器与弹药工程]