Summary:
The EnDrain computer program calculates the drainage discharge,
hydraulic head, or spacing between parallel subsurface (sub-surface) drains:
pipe/tile drains or open ditches, with or without entrance resistance and shows
the curve of the watertable (water-table).
The computations are needed for the design of subsurface drainage systems
of rainfed or irrigated agricultural land and soil salinity control.
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Details:
The drain spacing calculations are based on the concept of the
energy balance of groundwater (ground-water) flow. However, the traditional
concepts based on the Darcy and water balance or mass conservation equations
are also used.
The program allows for the presence of three different soil layers
with different hydraulic conductivity and permeability: one layer above and
two below drain level. The last two layers can also have different
horizontal and vertical hydraulic permeability (anisotropy).
Examples are given.
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Start:
The program starts clicking on EnDrainW.Exe.
More information is given in the program itself.
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Documentation:
Publications on the physical and mathematical theory of
the energy balance of groundwater (ground-water) flow and examples of EnDrain
applications are found on the articles page.
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Download:
EnDrainW
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