Scaling effect of breakthrough character in porous media |
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Authors: | Xuejiao Hu Jianhua Du Xiang Liu Buxuan Wang |
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Institution: | (1) Department of Thermal Engineering, Tsinghua University, 100084 Beijing, China |
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Abstract: | Breakthrough phenomenon during fluids percolating through wet saturated porous layer is widely met in the study of heat and
mass transfer in porous media. Breakthrough pressure (BP) is a characteristic pressure that indicates the intrinsic properties
of seepage within porous media. Measuring results of BP for saturated narrow-sieved sand are reported here. The curve of BP
varying with the height of porous layer was obtained. Experiment and analysis indicate that BP is independent of the height
of particle packed layer if thick enough; however, when the height is less than a certain critical value, BP diminishes with
the decrease of the height according to a universal scaling law. |
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Keywords: | breakthrough pressure porous media percolation boiling enhanced porous surface scaling law |
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