ASAE International Summer Meeting
A methodology and computer model is developed to determine economically optimum closed subsurface drainage systems in irrigated areas. The mode 1 maximizes net benefits, by comparing profit driven by crop yields to drain system cost and selects an optimum drain layout. The optimization methodology used is the SIMPLEX method (Nelder and Mead, 1965). The SIMPLEX model was linked to the subsurface drainage model DRAINMOD (Skaggs, 1982) and to the surface hydraulic model KINE (Walker and Skogerboe 1987). The selected optimum drainage system maximizes the difference between total revenue, and the total cost of installation, operation and management of a particular drainage system. The optimization sub-program provides a workable and simple procedure for optimizing water management simulation models.
Ehteshami, M., Willardson, L.S. and R.C. Peralta. 1990. Use of simplex algorithm for optimizing simulation models. Paper 90-2081. Presented at ASAE Summer Meeting, Columbus, Ohio, 24 Jun. 18 p.