低速非线性流动特性的实验研究
Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science)（2007）
Abstract
实验研究了去离子水在内径为5μm和2 μn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5μn和2μm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.
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Key words
Boundary layer,Experimental research,Nonlinear flow characteristic,Starting pressure gradient
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