航天推进技术研究院主办
[1]陈宏玉,刘红军,刘 上.水击问题的Fourier谱方法计算[J].火箭推进,2012,38(03):7-11.
CHEN Hong-yu,LIU Hong-jun,LIU Shang.Spectral-Fourier method for water hammer[J].Journal of Rocket Propulsion,2012,38(03):7-11.
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CHEN Hong-yu,LIU Hong-jun,LIU Shang.Spectral-Fourier method for water hammer[J].Journal of Rocket Propulsion,2012,38(03):7-11.
水击问题的Fourier谱方法计算
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
38
期数:
2012年03期
页码:
7-11
栏目:
研究与设计
出版日期:
2012-06-15
- Title:
- Spectral-Fourier method for water hammer
- 文章编号:
- 1672-9374(2012)03-0007-05
- 关键词:
- 液体火箭发动机; 推进剂输送; Fourier谱方法; 数值模拟
- 分类号:
- V434-34
- 文献标志码:
- A
- 摘要:
- 给出了推进剂供应系统管路内流体瞬变流动的数学模型，提出了采用Fourier谱方法求解瞬变流非线性偏微分方程的新方法。以一段两端分别连接贮箱和阀的直管道为例，利用该方法对阀门关闭后管道中形成的水击和压力振荡特性进行了求解，给出了相应的仿真结果，与已发表的采用特征线法和有限元法求解结果进行了比较。对数值计算中的非物理振荡问题进行了讨论。
- Abstract:
- The mathematical model of fluid transient inside propellant pipelines is introduced. A new algorithm is proposed to solve the nonlinear hyperbolic partial differential equations for gover- ning the fluid transient by spectral-Fourier method. The method is presented in detail with an illustration of the water hammer in a simple piping system connecting tank and valve. The water hammer and pressure oscillation formed in the pipeline when its valve is suddenly shut down were solved with the method. The corresponding simulation results are given and compared with the results obtained by method of characteristics and finite element method issued previously. The high frequency oscillation problem in the numerical calculation is also discussed.
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备注/Memo
收稿日期：2012-04-06；修回日期：2012-04-28
基金项目：国家“863”项目（2007AA705302）
作者简介：陈宏玉（1982—），男，博士研究生，研究领域为液体火箭发动机系统与总体技术
更新日期/Last Update:
1900-01-01