| 摘要: |
| 针对火箭通用芯级氧箱的共底贮箱结构，通过理论分析及数值仿真，提出了“无塌陷型面+消漩叶片”的出流方案，并通过优化型面起始点半径，确保出流过程中不产生明显的液面塌陷。仿真及缩比试验结果表明，相比传统的“圆盘+倒锥”出流方案，贮箱推进剂在无塌陷型面出流方案下的出流过程中，没有明显的气液掺混或漩涡夹气现象，贮箱内推进剂可得到充分利用。在此基础上，利用Wallis两相漂移模型对输送管内两相介质传播速度进行了理论研究，并结合出流过程中气泡运动速度的试验结果，提出了输送管内推进剂的可用量准则。 |
| 关键词: 共底贮箱 无塌陷型面 气液掺混 气泡运动速度 |
| DOI： |
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| 基金项目:民用航天预先研究项目（D030102） |
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| Research on the Technology of Non-Collapse Surface Discharge and Propellant Utilization in the Conveying Pipe |
| XIONG Yang,CHEN Erfeng,ZHOU Haoyang,WU Junfeng,WANG Taiping |
| (Beijing Institute of Astronautical Systems Engineering, Beijing 100076, China) |
| Abstract: |
| Based on the theoretical analysis and numerical simulation, a non-collapse surface and anti vortex blade discharging scheme for the common bottom compartment of the new generation manned launch vehicle universal stage is proposed. By optimizing the starting point radius of the surface, it is further ensured that there is no obvious liquid surface collapse during the discharging process. Compared to the traditional discharging scheme of disc and inverted cone , the simulation and scaling test results of the non-collapse surface discharging scheme show that there is no obvious gas-liquid mixing or vortex entrainment during the discharging process of the tank, and the propellant in the tank can be fully utilized. On this basis, the Wallis two-phase drift model is used to conduct theoretical research on the propagation velocity of two-phase media in the conveying pipeline, and combined with the experimental results of bubble motion velocity during the discharging process, a criterion for the available amount of propellant in the conveying pipeline is proposed. |
| Key words: Tank with shared bottom Non-collapse surface Gas-liquid mixing Bubble velocity |