摘要
金属铝粉在推进剂中大量使用,燃烧后产生的凝相颗粒一方面导致两相流损失,另一方面造成表面区域集聚和熔渣沉积。论文以潜入式喷管固体火箭发动机为研究对象,采用欧拉—拉格朗日模型和欧拉—欧拉两相流模型,模拟计算轴对称通道和带潜入喷管发动机内的两相流场,分析注入颗粒粒径和颗粒注入速度对颗粒随流性和熔渣沉积的影响。研究表明:在燃烧室通道内,粒径小的颗粒随流性较好;熔渣沉积量随着颗粒粒径增加而增加,随着注入速度增加而减少。
Metal aluminum extensively used in propellant, condensed phase particles will lead to two phase flow loss and slag deposition. In this paper, the submerged nozzle solid rocket motor is used as the research object. It adopts Lagrangian model and Eulerian model to simulate the two-phase flow in axisymmetric channel and full-scale solid rocket motor with submerged nozzle. In the paper, we analyzed the effects of particle size and particle sidewall injection velocity at burning surface on the characteristics of partitles trailing the streamlines, agglomeration on burning surface and the formation of slag. The results show that the smaller particles may be clearly ascertained to follow the streamlines more faithfully than larger particles. The slag quantity increases with the in- crease of the particle size and the decrease of the injection velocity of the side wall of the particles.
作者
张勇
李丹
张振华
房子建
ZHANG Yong;LI Dan;ZHANG Zhenhua;FANG Zijian(Naval Aeronautical and Astronautical University,Yantai 264001;China Unicorn Network Communications Co.,Ltd.Yantai Branch,Yantai 264000;Aeronautical Military-Representatives Office of Navy in Chengdu,Chengdu 610000;No.92095 Troops of PLA,Taizhou 318000)
出处
《计算机与数字工程》
2018年第10期2141-2145,共5页
Computer & Digital Engineering
关键词
颗粒随流性
表面集聚
熔渣形成
摄动法
characteristics of particle trailing the streamlines
agglomeration on burning surface
the formation of slag
perturbation method
