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J Mohanreddy
26Publications
9H-index
290Citations
Publications 26
Newest
AbstractA well-designed level basin irrigation system is easy to manage and has significant potential for achieving high application efficiency and improved salinity control, particularly when the field is laser-leveled. Over the years, three different criteria have arisen to design level basin irrigation systems. These are the volume-balance design criterion proposed by the Soil Conservation Service of the USDA, the limiting length design criterion, and the completion-of-advance design criterio...
#1D. ZerihunH-Index: 4
#2Jan FeyenH-Index: 47
Last.Zhi WangH-Index: 17
view all 4 authors...
The furrow irrigation system design problem is cast in an optimization setting. A structured problem formulation and a pre-solution analysis procedure is presented. The application of the proposed approach in the detection and removal of constraint redundancy and inconsistency, as well as complications related to scale problems is demonstrated. Key solution features, such as solution existence and (non)uniqueness, constraint activity at the optimum, as well as properties of monotonocity of the f...
#1D. Zerihun (Katholieke Universiteit Leuven)H-Index: 4
#2Zhi Wang (Katholieke Universiteit Leuven)H-Index: 17
Last.J Mohanreddy (UW: University of Wyoming)H-Index: 9
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Abstract Performance terms measure how close an irrigation event is to an ideal one. An ideal or a reference irrigation is one that can apply the right amount of water over the entire region of interest (subject region) without loss. The key phrase, used in the description of a reference irrigation, has been used as the criterion for identifying the performance terms that constitute a complete set, corresponding to any given irrigation regime. Indices have been defined to quantify the performanc...
#1D. Zerihun (Katholieke Universiteit Leuven)H-Index: 4
#2Zhi Wang (Katholieke Universiteit Leuven)H-Index: 17
Last.J Mohanreddy (UW: University of Wyoming)H-Index: 9
view all 4 authors...
A complete set of dependent furrow irrigation variables has been identified, for which empirical functions, of general applicability, have been developed. A one-dimensional sensitivity analysis technique coupled with dimensional analysis was employed to reduce the number of independent irrigation variables to a manageable size. Simulation experiments were carried out to generate the data used in developing the pertinent functional relationships. Regression analysis was used to ascertain the spec...
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 cost, time, and effort spent in field data collection. A univariate analysis, based on the concept of relative sensitivity, was used to quantify the sensitivity of seven dependent irrigation parameters (\IE\N\Da\N, \IE\N\Dr\N, \IR\N\Dr\N, \ID\N\Dr\N, \IU\N\Dco\N, l\Idr\N, and \I...
#1Zhi Wang (Katholieke Universiteit Leuven)H-Index: 17
#2J Mohanreddy (UW: University of Wyoming)H-Index: 9
Last.Jan Feyen (Katholieke Universiteit Leuven)H-Index: 47
view all 3 authors...
An improved 0–1 programming model was presented for optimal flow regulation and optimal grouping and sequencing of outlets in irrigation distributaries, under restrictions of both the rotational period and the incoming flow rate into distributaries. The problem was solved using a commercially available 0–1 programming software package. The example computations indicated that this model could effectively provide a constant flow rate into the canal during most of the rotation period, and thus redu...
#1J Mohanreddy (UW: University of Wyoming)H-Index: 9
Abstract The Saint-Venant equations of open-channel flow were linearized about an average operating condition of the canal. The concepts of linear optimal theory were applied to derive a feedback control algorithm for constant-level control of an irrigation canal. The performance of the state estimators designed using the pole-placement technique and the Kalman filtering technique (both time-varying and steady-state) were compared with the results obtained using a full state feedback controller....
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