航天推进技术研究院主办
[1]马原,董妍,李剑,等.荷兰斜纹筛网有效孔隙直径的数值分析与模型构建[J].火箭推进,2023,49(03):26-33.
MA Yuan,DONG Yan,LI Jian,et al.Numerical analysis and model establishment on effective pore diameter of Dutch twill weave[J].Journal of Rocket Propulsion,2023,49(03):26-33.
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MA Yuan,DONG Yan,LI Jian,et al.Numerical analysis and model establishment on effective pore diameter of Dutch twill weave[J].Journal of Rocket Propulsion,2023,49(03):26-33.
荷兰斜纹筛网有效孔隙直径的数值分析与模型构建
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
49
期数:
2023年03期
页码:
26-33
栏目:
目次
出版日期:
2023-06-25
- Title:
- Numerical analysis and model establishment on effective pore diameter of Dutch twill weave
- 文章编号:
- 1672-9374(2023)03-0026-08
- Keywords:
- cryogenic propellant; orbital gas-liquid separation; Dutch twill weave; bubble point pressure; effective pore diameter
- 分类号:
- V511+.6
- 文献标志码:
- A
- 摘要:
- 泡破压力是表征筛网通道式液体获取装置气液分离性能的关键指标之一,而筛网有效孔隙直径是准确预测泡破压力的核心参数。面对现有研究仍主要基于实验测量方法获得有效孔隙直径的局限性,通过构建荷兰斜纹型筛网(Dutch twill weave, DTW)真实结构的三维几何模型,获得了筛网内部孔隙流域的结构变化特征。基于表面张力模型与压力边界设置开展了特征喉部截面泡破压力数值仿真,提出了基于筛网几何结构参数的有效孔隙直径计算模型。结果表明:决定DTW泡破压力的特征喉部截面位于z=±(rw+rs)附近,具有近四边形的封闭边界。针对特征喉部截面,通过泡破压力数值仿真反推获得的有效孔隙直径与文献实验数据相对误差小于6%,所提出的有效孔隙直径模型预测结果与文献实验数据同样吻合良好,平均误差不超过10%,均能够实现不依赖于实验测量的筛网有效孔隙直径准确预测,可为筛网泡破压力性能分析及液体获取装置设计优化提供重要支撑。
- Abstract:
- Bubble point pressure is one of the key indexes to characterize the gas-liquid separation performance of the screen channel liquid acquisition devices, and the effective pore diameter of the screen is the core parameter to accurately predict the bubble point pressure. In the face of the limitation that the existing research is still mainly based on the experimental measuring method to obtain the effective pore diameter of screens, the structural characteristics of the fluid domain within the screen are obtained by constructing the three-dimensional geometry model of the real structure of Dutch twill weave(DTW)in this paper. The numerical study on the bubble point pressure at the characteristic throat is conducted based on the surface tension model and pressure boundary setting. A calculation model of effective pore diameter based on geometrical structure parameters of screen is proposed. The results show that the characteristic throat, which determines the bubble point pressure of DTW, is located near z=±(rw+rs)and is of a nearly closed quadrilateral boundary. In view of the characteristic throat section, the prediction of the effective pore diameter derived from the numerical simulation of bubble point pressure, is of a relative error less than 6% compared to the experimental data in literatures. Through the proposed effective pore diameter model, the predicted results are also in good agreement with literatures' experimental data, and the average error is less than 10%. The accurate prediction of thescreen's effective pore diameter can be achieved and is independent of the experimental measurement, which could provide important support for the performance analysis of screen's bubble point pressure and the design optimization of liquid acquisition devices.
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备注/Memo
收稿日期:2022-08-10; 修回日期:2022-08-31
基金项目:国家自然科学基金青年项目(51906194); 中国博士后科学基金(2019M663701); 上海航天科技创新基金(SAST2020-018); 上海市科技计划项目(20YF1447900)
作者简介:马原(1991—),女,博士,副教授,研究领域为低温推进剂空间管理技术等。
更新日期/Last Update:
1900-01-01