Flow of water through coarse granular materials. December 1964.

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Abstract
Permeability of a variety of coarse noncohesive granular materials tested in a 22 inch diameter permeameter. Velocity/hydraulic gradient relationship plotted, yielding a series of straight lines with sharp discontinuities of slope between each regime, rather than a curved transition from the low Darcy-type flow to the high turbulent flow region. For each material and its packing, the V-S relationship is characterised by a discontinuous exponential relationship. The upper limit of Darcy's law could be predicted more accurately from a correlation between coefficient of permeability and limited hydraulic gradient than from a Reynolds number. No method of predicting the lower limit of validity of Darcy's law is apparent.
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Author(s)
Dudgeon, C. R.
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Publication Year
1964
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Report
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UNSW Faculty
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download WRL_Research_Report_076.pdf 48.16 MB Adobe Portable Document Format
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