2.67 L板式表面张力贮箱设计及抗扰动性能仿真
doi: 10.11728/cjss2025.02.2024-0134 cstr: 32142.14.cjss.2024-0134
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李光昱 男, 1988年6月出生于江西省赣州市, 现为南昌航空大学航空宇航学院讲师, 主要研究方向为微重力流体力学、卫星在轨加注技术等. E-mail: lgynudt@sina.com -
吴宗谕 男, 1991年3月出生于河南省周口市, 现为国防科技大学空天科学学院副教授, 主要研究方向为微重力流体力学、卫星在轨服务技术等. E-mail: wuzongyu@nudt.edu.cn
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Design and Sloshing Suppression Simulation of 2.67 L Vane-type Surface Tension Tank
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摘要: 板式表面张力贮箱因结构简单、性能良好被广泛应用于各类卫星平台. 本文针对微小卫星平台, 设计了一个2.67 L板式表面张力贮箱及其推进剂管理装置, 介绍了贮箱壳体、蓄液器、导流板和气泡筛网等主要部件的设计过程. 根据平板间的蓄流原理完成了贮箱蓄液器的设计, 得到不同加速度扰动情况下的蓄液体积; 基于内角自流理论对导流板进行几何设计并确定了内外导流板数量; 对气泡筛网进行了选型, 复核了典型工况下气泡筛网泡破点的有效性; 通过CFD仿真, 分析了贮箱在不同填充率、不同加速度扰动情况下的质心变化. 仿真结果表明, 当该贮箱受到10–3g量级加速度扰动时, 贮箱内推进剂质心变化小于10–2 m, 证明本文所设计的2.67 L板式表面张力贮箱具有较强的抗扰动特性.Abstract: Owing to its structural simplicity and superior performance, the vane-type surface tension tank has been widely applied in many satellites. In this paper, a 2.67 L vane-type propellant tank and its Propellant Management Device (PMD) were designed for micro satellites. The design process of key components, including the tank shell, propellant reservoir, vanes and bubble screen, was described in detail. Firstly, the design of the propellant reservoir was completed based on the principle of liquid accumulation between parallel plates, and the liquid volume under different acceleration disturbances was obtained. The outline and the number of internal and external vanes was carried out based on the theory of capillary flow in corners. Secondly, a bubble screen was selected and the effectiveness of the bubble screen in typical situation was checked. Finally, by CFD simulation, the centroid variation of the propellant in the tank under different fill levels and acceleration disturbances was analyzed. The simulation results demonstrate that when the tank is subjected to 10–3g acceleration disturbances, the centroid variation of the propellant is less than 10–2 m, proving that the 2.67 L vane-type surface tension tank exhibits strong resistance to disturbances.
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Key words:
- Surface tension tank /
- PMD devices /
- Vane /
- Liquid reservoir /
- Simulation verification
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图 1 贮箱壳体(a)及其推进剂管理装置(b)
Figure 1. Tank shell (a) and its propellant management device (b)
图 9 80%充液量时通过xy平面的质量流率及质心偏移
Figure 9. Mass flow rate and centroid change under 80% filling rate in xy plane
表 1 钛合金材料部分力学性能
Table 1. Partial mechanical properties of titanium alloy
材料牌号 屈服强度$ \sigma_{0.2} $/MPa 抗拉强度$ \sigma_{\mathrm{b}} $/MPa TC4 ≥870 925～1150 TA1 ≥250 370～530 
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表 2 无水肼化物特性
Table 2. Characteristics of hydrazine
密度/
(kg·m–3)黏度/
(mPa·s)表面张力/
(N·m–1)接触角/(º) 1008 0.971 0.0698 5
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表 3 蓄液器的蓄液能力
Table 3. Liquid storage capacity of propellant reservoir
扰动量级/ g 0.01 0.005 0.001 蓄液能力/ mL 74.6 87.4 102.6
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表 4 仿真工况
Table 4. Conditions for simulation
序号 充液率/(%) 扰动大小/ (m·s–2) 扰动持续时间/s 1 50 无扰动 4 2 50 ax=–0.014 4 3 50 ax=–0.00141 4 4 50 az=–0.00141 4 5 50 az=–0.0141 4 6 80 ax=–0.00141 8.8 7 90 无扰动 1 8 90 ax=–0.014 1 9 90 ax=–0.00141 1 10 90 az=–0.00141 1 11 90 az=–0.0141 1
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