| 摘要: |
| 实验研究了去离子水在内径为5 Jim和2 p微圆管中的流动特性,并回归得到了边界层水膜厚度随剪切力的 变化公式。实验结果表明,典型牛顿流体去离子水在5 (un和2 (un微圆管中表现出不同程度的非线性流动特性，管 径越小,其非线性流动特性越强;微圆管的视渗透率不是常数,而是随压力梯度的增大而增大并最终趋于理论值;有 效流动横截面积随压力梯度增大而增大;边界层是导致低速非线性流动特性的主要因素之一a |
| 关键词: 非线性流动特性i边界层 启动压力梯度 实验研究 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金项目(50574060)和国家"973”重大基础研究前期研究专項(2002CCA00700) |
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| Experimental research on nonlinear flow characteristics at low velocity |
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XU Shao-liang1,2,YUE Xian^-an2
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(1. MOE Key Laboratory of Petroleum Engineering in China University of Petroleum, Beijing 102249, China;2. Enhanced Oil Recovery Center in Chine University of Petroleum T Beijing 102249, China)
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| Abstract: |
| The flow characteristics of deionized water in mIciDlube& with diaraetere of 5 and 2 \mi were investigated experimentally. And the equation of thickness variation of wHter film with sh^ar stress was regressed. The experimental results indicate that typical Newtonian fluid deionized water ahow^ different nonlinear flow diaracl
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| Key words: nonlinear flow characteristic boundary layer starting pressure gradient experimental research |
