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Full-Text Articles in Forest Sciences
Hydraulic Conductivity Evaluation For A Drainage Simulation Model (Drainmod), Teki̇n Özteki̇n
Hydraulic Conductivity Evaluation For A Drainage Simulation Model (Drainmod), Teki̇n Özteki̇n
Turkish Journal of Agriculture and Forestry
The objective of this study was to determine the most suitable saturated hydraulic conductivity (K) values as input into DRAINMOD among a range of K data sets developed for the drainage experiment site in North Central Ohio using seven different K estimation methods. The K methods evaluated were monolith, core, auger-hole, MUUF soil database, and using the Hooghoudt, Kirkham, and van Schilfgaarde equations with water table drawdown and drainage discharge data. Simulations using DRAINMOD (Version 4.6) were conducted for the years 1962-1964 and 1967-1971, and runoff and drain discharge predictions were compared with measured discharges. The analyses showed that none …
Simulating Water Flow To A Subsurface Drain In A Layered Soil, Teki̇n Özteki̇n
Simulating Water Flow To A Subsurface Drain In A Layered Soil, Teki̇n Özteki̇n
Turkish Journal of Agriculture and Forestry
The objective of the work presented in this paper was to simulate drain flow into subsurface drainage pipes for a layered soil profile using a finite element based HYDRUS-2D model. Data from the drainage experiment in North Central Ohio were used as input to the model. Studies were conducted to determine the ability of the model to predict drain discharge-water table elevation relationships. The model was also used to evaluate the effect of backfill on drain discharge-water table elevation relationships. HYDRUS-2D underpredicted drain discharge compared to the empirical and Kirkham-Hooghoudt equations for water table elevations above 70 cm. However, HYDRUS-2D …