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微重力下两相控温型储液器内气液界面仿真分析

周振华 孟庆亮 赵振明

周振华, 孟庆亮, 赵振明等 . 微重力下两相控温型储液器内气液界面仿真分析[J]. 北京航空航天大学学报, 2021, 47(6): 1152-1160. doi: 10.13700/j.bh.1001-5965.2020.0153
引用本文: 周振华, 孟庆亮, 赵振明等 . 微重力下两相控温型储液器内气液界面仿真分析[J]. 北京航空航天大学学报, 2021, 47(6): 1152-1160. doi: 10.13700/j.bh.1001-5965.2020.0153
ZHOU Zhenhua, MENG Qingliang, ZHAO Zhenminget al. Numerical analyses of liquid-vapor interface in two-phase thermal-controlled accumulator under microgravity condition[J]. Journal of Beijing University of Aeronautics and Astronautics, 2021, 47(6): 1152-1160. doi: 10.13700/j.bh.1001-5965.2020.0153(in Chinese)
Citation: ZHOU Zhenhua, MENG Qingliang, ZHAO Zhenminget al. Numerical analyses of liquid-vapor interface in two-phase thermal-controlled accumulator under microgravity condition[J]. Journal of Beijing University of Aeronautics and Astronautics, 2021, 47(6): 1152-1160. doi: 10.13700/j.bh.1001-5965.2020.0153(in Chinese)

微重力下两相控温型储液器内气液界面仿真分析

doi: 10.13700/j.bh.1001-5965.2020.0153
基金项目: 

国家自然科学基金 51806010

详细信息
    通讯作者:

    孟庆亮, E-mail: qlmeng@mail.ustc.edu.cn

  • 中图分类号: V416;TK124

Numerical analyses of liquid-vapor interface in two-phase thermal-controlled accumulator under microgravity condition

Funds: 

National Natural Science Foundation of China 51806010

More Information
  • 摘要:

    两相控温型储液器对机械泵驱动两相流体回路的稳定运行起到关键作用,而储液器内部气液分布状态是其控温性能的决定性因素之一。在轨微重力条件下,储液器内两相流动特性与地面状态差别巨大,这将给储液器的设计带来较大难度。针对两相控温型储液器在轨微重力下的两相工质分布特性,通过计算流体力学(CFD)方法对其内两相流动行为进行数值模拟。通过使用连续表面张力模型计算表面张力,使用多相流计算的流体体积分数方法对两相控温型储液器内气液界面形态的发展进行了追踪预测,并与理论解进行对比,结果吻合一致。通过对两相控温型储液器在不同Bond数、接触角、工质充灌量等参数下的仿真分析,得到了不同条件下储液器内气液运动及分布情况,结果表明:两相控温型储液器内气液界面状态与储液器尺寸、壁面浸润性、工质充灌量相关。研究结果可以为微重力下两相控温型储液器内气液界面的控制提供理论依据,并能指导储液器研制及在轨应用。

     

  • 图 1  两相控温型储液器示意图

    Figure 1.  Schematic of two-phase thermal-controlled accumulator

    图 2  储液器网格模型

    Figure 2.  Grid model of accumulator

    图 3  微重力条件下圆柱形腔体内气液界面形状

    Figure 3.  Shape of liquid-vapor interface in cylindrical cavity under microgravity condition

    图 4  理论解预测与NASA落塔试验结果对比[17]

    Figure 4.  Comparison between theoretical solution prediction and NASA drop tower experimental results[17]

    图 5  静液面仿真结果与理论解对比

    Figure 5.  Comparison between static interface results and theoretical solutions

    图 6  不同接触角仿真结果(BN=0)

    Figure 6.  Simulation results with different contact angles (BN=0)

    图 7  液面爬升高度随接触角变化曲线

    Figure 7.  Variation of height of liquid level with contact angles

    图 8  不同Bond数仿真结果(θc=5°)

    Figure 8.  Simulation results with different bond numbers (θc=5°)

    图 9  液面爬升高度随Bond数变化曲线

    Figure 9.  Variation of height of liquid level with bond number

    图 10  不同Bond数下,液面爬升高度随接触角变化曲线

    Figure 10.  Variation of height of liquid level with contact angles under different Bond number

    图 11  不同接触角下液面爬升高度随Bond数变化曲线

    Figure 11.  Variation of height of liquid level with bond number under different contact angles

    图 12  初始液面高度140 mm时各时刻气液界面形状

    Figure 12.  Variation of liquid-vapor interface shapes with time at initial liquid level height of 140 mm

    图 13  BN=0.025时各时刻气液界面形状

    Figure 13.  Variation of liquid-vapor interface shapes with time at BN=0.025

    图 14  BN=0.1时各时刻气液界面形状

    Figure 14.  Variation of liquid-vapor interface shapes with time at BN=0.1

    图 15  BN=1时各时刻气液界面形状

    Figure 15.  Variation of liquid-vapor interface shapes with time at BN=1

    图 16  BN=10时各时刻气液界面形状

    Figure 16.  Variation of liquid-vapor interface shapes with time at BN=10

    表  1  氨工质参数

    Table  1.   Parameters of ammonia as working medium

    参数 液相氨 气相氨
    密度ρ/(kg·m-3) 610 0.689
    黏度μ/(kg·(m·s-1)-1) 1.52×10-4 1.015×10-5
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-04-21
  • 录用日期:  2020-08-07
  • 网络出版日期:  2021-06-20

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