气动管道中压力波的传播特性分析

林惟锓; 黄亮; 蔡茂林

气动管道中压力波的传播特性分析

北京航空航天大学自动化科学与电气工程学院, 北京 100191

基金项目: 国家自然科学基金资助项目(50705004); 高等学校博士学科点专项科研基金资助项目(20070006041)

详细信息

作者简介:
林惟锓(1986-),男,广东潮州人,硕士生,linweiqin2006@163.com.

中图分类号: TH 41
计量
- 文章访问数: 3046
- HTML全文浏览量: 48
- PDF下载量: 1771
- 被引次数: 0
出版历程
- 收稿日期: 2010-09-27
- 网络出版日期: 2011-05-30

Analysis on transmitting characteristics of pressure waves in pipeline

School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 利用一维非定常气流理论,建立了管道中气体传播的分布式参数模型,采用迎风差分的方法进行数值计算,并通过实验结果与模型仿真结果的比较,验证了该模型的正确性.通过改变管道直径、气源速度、入口压强和仿真空间步长等初始条件,模拟不同特性的管道,对仿真结果进行比较分析,得到不同波形的压力波在不同管道中传播的特性.结果表明:利用压力波测流量时,应采用下弦波或矩形波.
- 非定常气流 /
- 迎风差分 /
- 压力波 /
- 传播
Abstract: Based on the theory of one-dimensional unsteady flow, a distributed parameter model of gas transmitting in pipeline was given. Then the model was solved with upwind difference formula, numerical simulations of the transmission of pressure waves in the pipe were also performed. Comparing the result of simulation with experiments, it was verified that this model was correct. And then the initial condition, such as the pipe diameter, air velocity, inlet pressure and the space step of simulation, was changed to simulate the different characteristics of the pipeline. Comparative analysis of the simulation results, the characteristics of the pressure waves of different waveforms under different conditions in the pipeline were obtained. The simulation shows that when using pressure wave to gas flow measure, it should use the waveform of half part of sine or square.
- unsteady gas flow /
- upwind difference /
- pressure wave /
- transmit

HTML全文

参考文献(1)

[1] 黄飞,张西民,郭烈锦.气液两相流中压力波传播的实验研究[J].自然科学进展,2005,15(4):459-464 Huang Fei,Zhang Ximin,Guo Liejin.Experimental study of pressure wave propagation in two-phase flow[J].Progress in Natural Science,2005,15(4):459-464(in Chinese) [2] De Wilde J,Constales D,Heynderickx G J,et al. Assessment of filtered gas-solid momentum transfer models via a linear wave propagation speed test[J].International Journal of Multiphase Flow,2007,33(6):616-637 [3] Xu Xiaoxuan,Gong Jing.A united model for predicting pressure wave speeds in oil and gas two-phase pipeflows[J].Journal of Petroleum Science and Engineering,2008,60(3/4):150-160 [4] Saito S,Iida M,Kajiyama H.Development and verification of numerical simulation of pressure changes in underground high-speed railways[J].RTRI Report,2006,20(1):29-34 [5] 熊小慧,梁习锋.CRH2型动车组列车交会空气压力波试验分析[J].铁道学报,2009,31(6):49-53 Xiong Xiaohui,Liang Xifeng.Analysis of air pressure pulses in meeting of CRH2 EMU trains[J].Journal of the China Railway Society,2009,31(6):49-53(in Chinese) [6] 黄亮,苏智勇,蔡茂林.基于压力波传送的管道气体流量测量方法[J].机床与液压,2008,36(12):138-140 Huang Liang,Su Zhiyong,Cai Maolin.A new measuring method for gas flow in pipeline based on pressure wave[J].Machine Tool and Hydraulics,2008,36(12):138-140(in Chinese) [7] Yoshida.Study on dynamic characteristics of gas pipeline system with gas regulator .Tokyo:Tokyo Institute of Technology,2001 [8] 蔡茂林.现代气动技术理论与实践第三讲:管路内的气体流动[J].液压气动与密封,2007,27(4):51-55 Cai Maolin.Theory and practice of modern pneumatic technology(3):gas flow in pipeline[J].Hydraulics Pneumatics and Seals,2007,27(4):51-55(in Chinese) [9] Hsieh Po-Wen, Yang Suh-Yuh.Two new upwind difference schemes for a coupled system of convection-diffusion equations arising from the steady MHD duct flow problems[J].Journal of Computational Phics,2010,229(24):9216-9234 [10] Pirozzi M A.High-resolution compact upwind finite difference methods for linear wave phenomena[J].Applied Numerical Mathematics,2009,59(8):1905-1921

施引文献

资源附件(0)

访问统计