Your search found 24 records
1 Merkley, G. P.. 1987. Users manual for the PASCAL version of the USU main system hydraulic model. Logan, UT, USA: Utah State University. viii, 113 p. (WMS report 75)
(Location: IWMI-HQ Call no: 631.7.1 G000 MER Record No: H02835)
2 Merkley, G. P.; Pojsoontorn, C.; Kawsard, K.; Walker, W. R.; Skogerboe, G. V. 1988. USU irrigation main system hydraulic model: Replication of modeling capability in other countries. Logan, UT, USA: Utah State University. ix, 76p. (WMS report no.84)
Simulation models ; Hydraulics ; Mathematical models ; Irrigation programs ; Irrigation canals ; Computer techniques ; Flow regulators ; Water control ; Small scale systems / Thailand
(Location: IWMI-HQ Call no: 631.7.1 G000 MER Record No: H03422)
This report concerns the requirements for replicating the capability for hydraulic modeling of irrigation main systems with the USU Main System Hydraulic Model at different project sites and different countries. The computerized model was developed at Utah State University (USU) under the Water Management Synthesis II Project, funded and assisted by USAID through the Consortium for International Development. The information contained herein complements that which is found in the user's manual for the model
3 Merkley, G. P.. 1988. Hydraulic modeling applications in main system management. Logan, UT, USA: Utah State University. xvi, 113p. (WMS report 74)
Hydraulics ; Models ; Primary level irrigation ; Irrigation management ; Evaluation ; Scheduling ; Flow regulators ; Computer techniques ; Water distribution ; Social aspects / Thailand
(Location: IWMI-HQ Call no: 631.7.1 G750 MER Record No: H04259)
4 Gichuki, F. N.; Walker, W. R.; Merkley, G. P.. 1990. Transient hydraulics model for simulating canal-network operation. Journal of Irrigation and Drainage Engineering, 116(1):67-82.
(Location: IWMI-HQ Call no: PER Record No: H06006)
5 Merkley, G. P.; Walker, W. R.; Skogerboe, G. V. 1990. Field installation of a model for transient simulation of canal flow. Irrigation and Drainage Systems, 4(1):77-91.
(Location: IWMI-HQ Call no: PER Record No: H006137)
(0.90 MB)
6 Merkley, G. P.; Walker, W. R.; Cichuki, F. N. 1990. Transient hydraulic modeling for improved canal system operation. Agricultural Water Management, 18(3):181-194.
(Location: IWMI-HQ Call no: PER Record No: H06990)
7 Merkley, G. P.; Walker, W. R. 1991. Centralized scheduling logic for canal operation. Journal of Irrigation and Drainage Engineering, 117(3):377-393.
(Location: IWMI-HQ Call no: PER Record No: H08271)
8 Forrest, M. H.; Merkley, G. P.. 1993. Unique problems in modeling irrigation canals. Journal of Irrigation and Drainage Engineering, 119(4):656-662.
(Location: IWMI-HQ Call no: PER Record No: H013056)
This is one of several introductory papers resulting from work by the ASCE Task Committee on Irrigation Canal System Hydraulic Modeling. It is intended to serve as background for analyses by the Task Committee of several available programs. Irrigation-canal modeling is based on the same unsteady-flow equations used for river modeling. However, the canal and irrigation environment present several unique simulation problems generally not encountered in river modeling. These include zero-depth conditions, mixed- regime and reversing flow, gate submergence, flow in inverted siphons and culverts, multiple flow paths, and control-system interfaces. This paper outlines some of these special problems, discusses their importance, and reviews some solution approaches in general terms.
9 Rogers, D. C.; Merkley, G. P.. 1993. Description and evaluation of program USM. Journal of Irrigation and Drainage Engineering, 119(4):693-702.
(Location: IWMI-HQ Call no: PER, 631.7 G000 RIT Record No: H013059)
USM is a hydraulic-simulation computer program developed by the U.S. Bureau of Reclamation to analyze unsteady-flow conditions in canals. The program USM uses the method of characteristics to solve the complete Saint Venant equations for unsteady flow in open channels. This solution method yields accurate numerical results but sometimes requires more computer execution time than other methods. USM analyzes canal systems with a variety of structural boundary conditions, including check gates, weirs, siphons, and pumps. Check gates can have either manual or automatic gate control. Branching canals, supercritical flow, and channel dewatering cannot be analyzed. This paper describes the model and compares its strengths and weaknesses with those of other models. Several test data sets compiled by the ASCE Task Committee on Irrigation Canal System Hydraulic Modeling were used in the evaluation. USM simulation results are compared to field data collected from the Central Arizona Project canal system. Also published in Ritter, W. F. (Eds.) 1991. Irrigation and drainage: Proceedings of the 1991 National Conference sponsored by the Irrigation and Drainage Division of the ASCE, and the Hawaii Section, ASCE, Honolulu, Hawaii, July 22-26, 1991. New York, NY, USA: ASCE. pp.425-431.
10 Play n, E.; Walker, W. R.; Merkley, G. P.. 1994. Two-dimensional simulation of basin irrigation. I: Theory. Journal of Irrigation and Drainage Engineering, 120(5):837-856.
(Location: IWMI-HQ Call no: PER Record No: H015368)
11 Play n, E.; Walker, W. R.; Merkley, G. P.. 1994. Two-dimensional simulation of basin irrigation. II: Applications. Journal of Irrigation and Drainage Engineering, 120(5):857-870.
(Location: IWMI-HQ Call no: PER Record No: H015369)
12 Scaloppi, E. J; Merkley, G. P.; Willardson, L. S. 1995. Intake parameters from advance and wetting phases of surface irrigation. Journal of Irrigation and Drainage Engineering, 121(1):57-70.
(Location: IWMI-HQ Call no: PER Record No: H015997)
13 Holly, F. M.; Merkley, G. P.. 1991. Unique problems in modeling irrigation canals. In Ritter, W. F. (Ed.), Irrigation and drainage: Proceedings of the 1991 National Conference sponsored by the Irrigation and Drainage Division of the American Society of Civil Engineers and the Hawaii Section, ASCE, Honolulu, Hawaii, July 22-26, 1991. New York, NY, USA: ASCE. pp.304-310.
(Location: IWMI-HQ Call no: 631.7 G430 RIT Record No: H019894)
Irrigation-canal modeling is based on the same unsteady flow equations used for river modeling. However the canal and irrigation environment present several unique simulation problems which are generally not encountered in river modeling. These include zero-depth conditions, mixed-regime and reversing flow, gate submergence, flow in inverted siphons and culverts, multiple flow paths, and control system interfaces. This paper outlines some of these special problems and their solution approaches.
14 Merkley, G. P.; Rogers, D. C. 1991. Description and evaluation of program CANAL. In Ritter, W. F. (Ed.), Irrigation and drainage: Proceedings of the 1991 National Conference sponsored by the Irrigation and Drainage Division of the American Society of Civil Engineers and the Hawaii Section, ASCE, Honolulu, Hawaii, July 22-26, 1991. New York, NY, USA: ASCE. pp.390-396.
(Location: IWMI-HQ Call no: 631.7 G430 RIT Record No: H019902)
CANAL was developed in 1987 at Utah State University to perform hydrodynamic computer simulations of canal networks. This paper describes the model and offers opinions on the model's strengths, weaknesses, and applications. Several test data sets compiled by the ASCE Task Committee on "Irrigation Canal System Hydraulic Modeling" were used to evaluate program CANAL.
15 Merkley, G. P.. 1991. Field application of transient and steady-flow canal models in Thailand. In Ritter, W. F. (Ed.), Irrigation and drainage: Proceedings of the 1991 National Conference sponsored by the Irrigation and Drainage Division of the American Society of Civil Engineers and the Hawaii Section, ASCE, Honolulu, Hawaii, July 22-26, 1991. New York, NY, USA: ASCE. pp.494-500.
Irrigation canals ; Canal regulation techniques ; Networks ; Flow ; Simulation models ; Hydraulics ; Water allocation ; Irrigation programs / Thailand
(Location: IWMI-HQ Call no: 631.7 G430 RIT Record No: H019910)
A transient (unsteady) flow model for simulating the hydraulics in irrigation canal networks was developed and tested in Thailand. A steady- state hydraulic model was subsequently developed and tested at the same site in Thailand. Both of the models were designed not only to simulate canal hydraulics, but also to generate control structure and turnout opening values based on given water allocation schedules. The features of these models and the experiences in applying them to canal operation at an irrigation project are described.
16 Skogerboe, G. V.; Merkley, G. P.. 1996. Irrigation maintenance and operations learning process. Highlands Ranch, CO, USA: Water Resources Publications, LLC. x, 358p.
Irrigation operation ; Maintenance ; Terminology ; Irrigation engineering ; Irrigation systems ; Training ; Teaching materials ; Monitoring ; Evaluation ; Farmer-agency interactions ; Water delivery ; Watersheds ; Reservoirs ; Irrigation canals ; Open channels ; Canal linings ; Sedimentation ; Dams ; Aquatic weeds ; Erosion ; Surface drainage ; Subsurface drainage ; Gates ; Discharge frequency ; Measurement ; Flow ; Construction technology ; Calibrations ; Velocity ; Weirs ; Design ; Flumes ; Seepage loss ; Irrigation scheduling ; Computer models ; Hydraulics ; Water budget / Thailand / Pakistan / India / Sri Lanka / Philippines / Bolivia
(Location: IWMI-HQ Call no: 631.7.1 G000 SKO Record No: H019955)
17 Skogerboe, G. V.; Merkley, G. P.; Shafique, M. S.; Gandarillas, C. A. 1992. Field calibration of irrigation flow control structures. Logan, UT, USA: Utah State University. Department of Agricultural and Irrigation Engineering. International Irrigation Center. viii, 93p.
Irrigation systems ; Networks ; Irrigation engineering ; Flumes ; Measuring instruments ; Water measurement ; Flow measurement ; Discharges ; Open channels ; Flow control ; Gates ; Calibrations ; Control methods ; Irrigation canals ; Pipes
(Location: IWMI-HQ Call no: 631.7.1 G000 SKO Record No: H020248)
18 Pongput, K.; Merkley, G. P.. 1997. Comparison and calibration of canal gate automation algorithms. Journal of Irrigation and Drainage Engineering, 123(3):222-225.
(Location: IWMI-HQ Call no: PER Record No: H020505)
19 Azevedo, C. A. V.; Merkley, G. P.; Walker, W. R. 1996. The SIRTOM software - A real-time surface irrigation decision support system. In Zazueta, F. S. (Ed.), Sixth International Conference on Computers in Agriculture, Cancun, Mexico, June 1996. St. Joseph, MI, USA: ASAE. pp.872-884.
Decision support tools ; Surface irrigation ; Optimization ; Models ; Soil water ; Infiltration ; Furrow irrigation ; Performance evaluation ; Simulation ; Computer software / Brazil
(Location: IWMI-HQ Call no: 001.6 G000 ZAZ Record No: H020776)
20 Prajamwong, S.; Merkley, G. P.; Allen, R. G. 1997. Decision support model for irrigation water management. Journal of Irrigation and Drainage Engineering, 123(2):106-113.
Irrigation management ; Decision support tools ; Simulation models ; Irrigation systems ; Water balance ; Water requirements ; Crop production ; Climate ; Soil water ; Crop yield / USA / Thailand / Utah
(Location: IWMI-HQ Call no: PER Record No: H021089)
Powered by DB/Text WebPublisher, from
