| 摘 要： | ![]()
The fixed stream-tube method widely adopted in engineering field for giving anapproximate solution to the two-dimensional problems of two-phase flow through porousmedia is summarized and an improvement has been made in this paper.Its core part,i.e.,thefluid displacement within a one-dimensional stream tube with variable cross-sectional areaunder a given pressure difference across the tube is thoroughly studied.The existence anduniqueness of solution are proved the exact solution,numerical solution and itsconvergence.stability analyses are given in this paper.
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