西南石油大学学报(自然科学版) ›› 2002, Vol. 24 ›› Issue (5): 40- 42.DOI: 10.3863/j.issn.1000-2634.2002.05.013

• 石油工程 • 上一篇    下一篇

多孔介质中低速气体的非线性渗流

陈代珣 王章瑞 高家碧   

  1. 西南石油学院电子信息工程学院,四川南充637001
  • 收稿日期:2002-04-06 修回日期:1900-01-01 出版日期:2002-10-20 发布日期:2002-10-20
  • 通讯作者: 陈代珣

NONLINEAR FLOW OF GAS AT LOW VELOCITY IN POROUS MEDIA

CHEN Dai-xun WANG Zhang-rui GAO Jia-bi   

  1. Southwest Petroleum Institute , NanchongSichuan 637001 , China
  • Received:2002-04-06 Revised:1900-01-01 Online:2002-10-20 Published:2002-10-20
  • Contact: CHEN Dai xun

摘要: 在多孔介质中,通过对低速渗流气体的摩阻系数f 与雷诺数Re 的实验关系分析得出,随着雷诺数减小,气体的渗流规律表现出由遵从达西线性关系连续转变为非线性关系,其转变所对应的雷诺数Rec = (1. 0 ~ 4. 4) ×10- 4 。由动力学分析可知,低速渗流气体出现的非线性现象是由气体分子与孔隙壁的作用引起, 并给出了相应条件下渗流速度V 与压力梯度Δp/ΔL 的关系。
 

关键词: 多孔介质, 气体, 低速渗流, 雷诺数, 非线性

Abstract: The experiment data about friction resistance coefficients fand Reynoid numbers Re are analyzed to study the law of gas flow at low velocity in tight porous media. As Re decreases , the porous flow of gas shows nonlinear phenomena deviation off Darcy’s law linear phenomena , and corresponding Rec = (1. 0~4. 4) ×10 - 4 . The collisions occurred between gas molecule
and pore wall cause the nonlinear phenomena. The relationship of flow velocity V and pressure grade Δp/ΔL is given according to theory analysis.

Key words: porous media, gas flow, low velocity, reynoids number, nonlinear

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