| 推进剂供应管路内液体瞬变流一维有限元计算 |
| |
| 引用本文： | 程谋森,刘昆,张育林.推进剂供应管路内液体瞬变流一维有限元计算[J].推进技术,2000,21(4):12-15. |
| |
| 作者姓名： | 程谋森 刘昆 张育林 |
| |
| 作者单位： | 国防科技大学,航天与材料工程学院,湖南,长沙,410073 |
| |
| 摘 要： | 将液路计算中偏微分方程模型化成有限阶数的常微分方程组，由一维液体瞬变管流方程的特征线差分格式，提出了一种计算管腔互联结构形式的液体推进剂供应管路中瞬变流的一维有限元方法，它兼有特征线方法的特点。数值计算表明对单根等截面圆管阀门关断问题的计算结果与特征线方法计算结果吻合。利用本文方法计算了一个模型发动机的脉冲工况动态过程，取得了很好的效果。
|
| 关 键 词： | 液体推进剂火箭发动机 推进剂输送 瞬变流计算 |
One-dimensional finite element solutions for liquid transients in propellant feedlines |
| |
| Cheng Mousen,Liu Kun and Zhang Yulin.One-dimensional finite element solutions for liquid transients in propellant feedlines[J].Journal of Propulsion Technology,2000,21(4):12-15. |
| |
| Authors: | Cheng Mousen Liu Kun and Zhang Yulin |
| |
| Institution: | Inst.of Aerospace and Material Engineering,National Univ. of Defence Technology, Changsha 410073,China;Inst.of Aerospace and Material Engineering,National Univ. of Defence Technology, Changsha 410073,China;Inst.of Aerospace and Material Engineering,National Univ. of Defence Technology, Changsha 410073,China |
| |
| Abstract: | A one-dimensional finite element solution for liquid transients in propellant feedlines composed of vessels and ducts was derived. The solution was based on the difference scheme of characteristics and combined with the merits of finite element method. The calculated results for the approximation of valve closure problems show good agreement with that obtained by method of characteristics. The pulse mode of a model thruster was simulated with this solution, and the results were reasonable. |
| |
| Keywords: | Liquid propellant rocket engine Propelant transfer Unsteady flow Method of characteristic Finite element method |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《推进技术》浏览原始摘要信息 |
| 点击此处可从《推进技术》下载免费的PDF全文 |
