火箭推进2012，Vol.38Issue(3)：7-11,5.
水击问题的Fourier谱方法计算
Spectral-Fourier method for water hammer
摘要
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 illustra- tion 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.关键词
液体火箭发动机/推进剂输送/Fourier谱方法/数值模拟Key words
liquid rocket engine/propellant transfer/spectral-Fourier method/numerical simulation分类
航空航天引用本文复制引用
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(3):7-11,5.基金项目
国家“863”项目 （）
