摘要
液体运载火箭贮箱出流末期,由于液体晃动、旋转或液面塌陷,出流口会产生夹气现象,严重影响发动机正常工作。对这一现象进行了流场仿真分析,研究发现,防塌圆盘高度越低,贮箱内推进剂液体剩余量越少,流阻越大;圆盘直径越大,发生塌陷夹气的时间越晚,圆盘直径对出流流阻的影响较小;当有漩涡和晃动时,液面塌陷会提前发生,但消漩防塌装置仍能有效推迟夹气现象的发生。研究可以为消漩防塌装置的设计提供参考。
In this paper,the flow field simulation of the gas trapping phenomenon in the propellant pipe caused by the liquid sloshing,rotating or liquid level collapse is carried out.The study found that the lower the height of the anti-collapse disk is,the less liquid is left in the tank,the greater the flow resistance is,the larger the diameter of the disk is,the later the collapse occurs,and the disk diameter has a smaller effect on flow resistance.When there are vortex and sloshing,the liquid level collapse will occur earlier,but the vortex elimination and anti-collapse device can still effectively delay the occurrence of gas trapping in the propellant pipe.The research can provide reference for the design of vortex elimination and anti-collapse device.
作者
成勇
杜江
丁吉坤
丁子航
何海涛
赵学光
CHENG Yong;DU Jiang;DING Jikun;DING Zihang;HE Haitao;ZHAO Xueguang(Expace Technology Co.,Ltd.,Wuhan 430040,China)
出处
《真空与低温》
2022年第6期761-766,共6页
Vacuum and Cryogenics
关键词
消漩防塌
贮箱出流
漩涡识别
液面塌陷
vortex elimination and anti-collapse
tank out flow
vortex identification
liquid level collapse
