NONLINEAR FLOW OF GAS AT LOW VELOCITY IN POROUS MEDIA

doi:10.3863/j.issn.1000-2634.2002.05.013

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

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NONLINEAR FLOW OF GAS AT LOW VELOCITY IN POROUS MEDIA

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

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

Abstract

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

CLC Number:

TE312

CHEN Dai-xun WANG Zhang-rui GAO Jia-bi. NONLINEAR FLOW OF GAS AT LOW VELOCITY IN POROUS MEDIA[J]. 西南石油大学学报(自然科学版), 2002, 24(5): 40- 42.

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NONLINEAR FLOW OF GAS AT LOW VELOCITY IN POROUS MEDIA

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