| 引用本文: | 刘昆,程谋森,张育林.低温推进剂供应管道系统充填过程的动力学模型.[J].国防科技大学学报,2003,25(3):1-5.[点击复制] |
| LIU Kun,CHENG Mousen,ZHANG Yulin.Dynamic Model of Priming Processes of Cryogenic Propellant Feed Lines[J].Journal of National University of Defense Technology,2003,25(3):1-5[点击复制] |
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| 低温推进剂供应管道系统充填过程的动力学模型 |
| 刘昆, 程谋森, 张育林 |
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(国防科技大学 航天与材料工程学院，湖南 长沙 410073)
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| 摘要: |
| 研究了低温推进剂液体火箭发动机供应管道系统充填过程的建模问题。低温推进剂的充填相变过程采用均相模型，对推进剂充填管道系统进行有限元分割，应用基本守恒定律于充满推进剂的单元和充满气体的单元，两相单元采用等效流容方程，建立了低温推进剂管道充填过程的有限元状态变量模型。充填的容腔视为两相单元，建立了其动力学模型。利用本文的模型，对液氢、液氧推进剂的管道充填过程进行了仿真计算，给出了有关计算结果。 |
| 关键词: 液氢液氧发动机 推进剂供应管道 充填过程 动力学模型 |
| DOI： |
| 投稿日期：2002-12-01 |
| 基金项目:国家自然科学基金项目资助(50206026) |
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| Dynamic Model of Priming Processes of Cryogenic Propellant Feed Lines |
| LIU Kun, CHENG Mousen, ZHANG Yulin |
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(College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| The priming process of feed lines of cryogenic propellant liquid rocket engines was studied. The two-phase flow of cryogenic propellant priming process was treated homogeneously as pseudo-fluid with average properties. A feed pipe was divided into uniform finite elements. By applying the basic conservation laws to the elements filled with propellant or purge gas, and employing the equivalent flow-capacitance equation to deal with the two-phase element, the finite element state-variable model for the priming process of the cryogenic propellant feed pipe was developed. By treating vessel as two-phase element, we also obtained the equations of its priming process. Using our models, the processes of LH2 and LOX priming a pipe were calculated respectively. The calculation results are given. |
| Keywords: LH2/LOX rocket engines propellant feed pipes priming processes dynamic model |
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