可再充填起动篮芯柱结构排气管流体传输规律与仿真  

Research on fluid transmission law and simulation of refillable start-basket with core structure exhaust pipe

作　　者：单立杰 宁继荣[1] 肖明杰[1] SHAN Lijie;NING Jirong;XIAO Mingjie(Xi'an Aerospace Propulsion Institute,Xi'an 710100,China)

机构地区：[1]西安航天动力研究所,陕西西安710100

出　　处：《火箭推进》2020年第5期57-65,101,共10页Journal of Rocket Propulsion

基　　金：液体火箭发动机重点实验室基金(6142704060210)。

摘　　要：保持排气管顶端多孔毛细元件的润湿,在微重力或较小干扰加速度下实现推进剂自保持,是可再充填起动篮研制过程中重点关注的问题之一。根据微重力流体力学和内角自流理论,结合起动篮的工作过程,分析了排气管顶端多孔毛细元件的润湿问题,设计了芯柱结构作为该问题的解决方案,针对两种典型工况,通过FLOW-3D软件进行了仿真计算,验证所设计芯柱能很好地实现介质导流抽吸,具备工程应用价值。进一步仿真分析了引流片数目对导流效果的影响以及柱形十字板的导流效果。Keeping the capillary components at the top of the exhaust pipe moistened and propellant self-retaining under microgravity or low interference acceleration is one of the key issues in the development of refillable start-basket.Based on the theory of microgravity fluid mechanics and interior corner flow,combined with the working process of the start-basket,the wetting problem of the capillary components at the top of the exhaust pipe was analyzed,and the core structure was designed as a solution to this problem.The simulation calculation was carried out by FLOW-3D software,which verified that the designed core can realize the medium guiding suction well,and has engineering application value.Further simulation analyzed the effect of the number of deflector on the diversion effect and the diversion effect of the cross plate.

关 键 词：可再充填起动篮 推进剂自保持 微重力流体力学 内角自流 

分 类 号：V434.23[航空宇航科学与技术—航空宇航推进理论与工程]