An Analytical Technique of Flow Rate Into Perforated Draintubes

by A. Filice, Lakehead Univ, Thunder Bay, Canada,
U. S. Panu, Lakehead Univ, Thunder Bay, Canada,

Document Type: Proceeding Paper

Part of: Irrigation and Drainage


The flow rate into a draintube in a saturated soil media depends on numerous characteristics such as the hole size, the number and spacing of holes, the drain size and depth. Based on a series solution of Laplace's equation and techniques of solution of dual trigonometric series, a formula for the flow rate into a perforated draintube with circular perforations is developed. Graphs showing the variation in delivery ratio with respect to geometric characteristics of draintubes are presented.

Subject Headings: Flow rates | Drainage | Drainage systems | Saturated soils | Soil properties | Spacing | Laplace transform | Geometrics

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