Minimization of deep percolation by a parabolic simulation model in a blocked end furrow irrigation method

Abstract

Surface irrigation methods enable a lower cost of investment and energy requirements than pressurized systems if they are designed and managed properly. The aim of this investigation was to devise a new simulation model that would enable the determination of the optimum water application time and furrow length in a blocked end furrow system. The infiltration properties of the soil, net irrigation water requirement of the crop and inflow to the furrow constitute the main variables of this process. Deep percolation and the cross‐sectional area of the wetting pattern where the net irrigation water requirement of the crop is met along the furrow are the main components that were simulated interactively in the model. They were described as a function of time. The proposed model devised in this investigation was run for two different sample applications. While values of 93 and 94% water application efficiencies were obtained by running the USDA SCS method for the first and second sample applications, respectively, values of 92 and 94% were obtained, respectively, from the proposed model. These results indicate that the proposed model can be used in the design of a blocked end furrow system.

Estimation of future hydropower generation of reservoir systems used for different purposes in different regions

“…The method proposed in the present investigation estimates the hydropower generation level of a reservoir for the future in accordance with the current conditions of the region. This solution provides a decision support tool for both the planning of the optimum operation of a reservoir system which has a multi-objective use and for water allocation planning between different users [1,3,39,40]. The model which is run for four different reservoir systems gives satisfactory results.…”