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Discussion of “<i>Hydraulics of Perforated Irrigation Trail Tube</i>” by Shu‐Tung Chu (March, 1984)
Publisher: American Society of Civil Engineers
Sensitivity Analysis of Soil Hydraulic Properties on Subsurface Water Flow in Furrows
Publisher: American Society of Civil Engineers
Abstract: Knowledge of the sensitivity of various soil hydraulic properties is beneficial for model development and application purposes. It can lead to better estimated values, better understanding, and thus reduced uncertainty. ...
Comparison of Models for Computing Drainage Discharge
Publisher: American Society of Civil Engineers
Abstract: The WAVE model describes the transport and transformations of matter and energy in the soil, crop, and vadose environment. A lateral field drainage subprogram was added to the WAVE model to simulate lateral subsurface ...
Computation Method for Regulating Unsteady Flow in Open Channels
Publisher: American Society of Civil Engineers
Abstract: Unsteady flow problems in open channels can be classified as simulation‐ and operation‐type problems, according to the objectives of the study. The simulation problem is for predicting the discharge and water level in the ...
Downstream Control of Multireach Canal Systems
Publisher: American Society of Civil Engineers
Abstract: A downstream control algorithm was developed for the control of multireach canal systems. The objective of the control is to maintain a target water level at the downstream end of each pool by adjusting the control gate ...
Downstream Control Algorithm for Irrigation Canals
Publisher: American Society of Civil Engineers
Abstract: A downstream control algorithm for on‐demand operation of irrigation canal systems is presented. A constant water level is maintained at the downstream end of the pool. The approach is based on an explicit finite‐difference ...
Evaluation of Various Surface Irrigation Numerical Simulation Models
Publisher: American Society of Civil Engineers
Abstract: In this study, a zero-inertia model (ZIMOD) is presented to simulate all phases of border and furrow irrigation systems. The governing equations were discretized using a control volume of moving cells, by procedures reported ...
Sensitivity Analysis of Furrow-Irrigation Performance Parameters
Publisher: American Society of Civil Engineers
Abstract: Knowledge of the sensitivity of performance and other related dependent furrow-irrigation parameters, in quantitative terms, to variations in field, design, and management variables can help save a considerable amount of ...
Closure to “Computation Method for Regulating Unsteady Flow in Open Channels” by Fubo Liu, Jan Feyen, and Jean Berlamont (September/October, 1992, Vol. 118, No. 10)
Publisher: American Society of Civil Engineers
Economics of Nitrate Losses from Drained Agricultural Land
Publisher: American Society of Civil Engineers
Abstract: Some of the highest losses of nitrate to surface waters come from drained agricultural land. This research studied, for Belgian farming conditions, (i) the effect of subsurface drainage density on nitrate losses and (ii) ...