Numerical Analysis for Propellant Management in Rocket Tanks
Numerical Analysis for Propellant Management in Rocket Tanks
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DOI：
10.2514/1.4792
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发表时间：
2005
影响因子：
1.9
通讯作者：
T. Himeno;Toshinori Watanabe;A. Konno
中科院分区：
文献类型：
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作者：
T. Himeno;Toshinori Watanabe;A. Konno
为了跟踪在轨储罐内液体表面的三维行为，提出了一种基于Level Set方法的数值格式。为了验证数值方法的有效性，通过在落塔中观测低重力条件下圆柱形容器内液面的非定常变形，获得了实验数据。重点研究了液体表面的动态行为和固体壁面上接触线的位移。在此基础上，讨论了表面张力的边界条件，并在计算中充分引入了润湿现象模型。与实验数据比较，相应的数值结果吻合较好。利用所开发的程序，对H-IIA运载火箭上级推进系统液氧贮箱在低重力条件下的放空过程进行了数值模拟。结果表明，微加速度引起的浮力可以有效地防止倾角增长，从而可以在实际情况下增加运载火箭贮箱中的可使用推进剂。
To track the three-dimensional behavior of liquid surfaces in storage tanks on orbit, a numerical scheme based on the level set method was developed. For the verification of the numerical methods, experimental data were acquired through the observation of the unsteady deformations of liquid surfaces in cylindrical containers under low-gravity conditions in a drop tower. Primary emphasis was placed on the dynamic behavior of the liquid surface and the displacement of the contact line on the solid wall. Based on the results, the boundary condition for surface tension was discussed and the model of wetting phenomena was adequately introduced into the computation. Compared with the experimental data, the corresponding numerical results showed good agreement. With the developed code, the flowfields at the draining process in the liquid oxygen (LO X ) tank for the upper-stage propulsion system of an H-IIA launch vehicle under low-gravity conditions were also investigated. It was found that the buoyancy induced by a slight acceleration was efficient to prevent dip growth and that the serviceable propellant in the launch-vehicle tank could thereby be increased in a realistic situation.