Your search found 8 records
1 Ankum, P.. 1989. Capacity curves for the design of irrigation canals. In Rydzewski, J. R.; Ward, C. F. (Eds.) Irrigation theory and practice. Proceedings of the International Conference, University of Southampton, 12-15 September. London: Pentech Press. pp.556-565.
(Location: IWMI-HQ Call no: 631.7 G000 RYD Record No: H07543)
2 Ankum, P.. 1993. Self-management in irrigation systems. In HR Wallingford. Maintenance and operation of irrigation/drainage schemes for improved performance: papers presented to the Asian Regional Symposium held in Beijing, People's Republic of China, 24-27 May 1993. Wallingford, Oxfordshire, UK: HR Wallingford. pp.2:51-64.
(Location: IWMI HQ Call no: 631.7.1 G570 MAI Record No: H010816)
Flow control in irrigation canals is a special subject of "control systems engineering" as developed in mechanical engineering for industries. A major division can be made into flow control systems with (i) no-management, (ii) self-management, and (iii) central-management. Self-management means that the hydraulic system itself converges into a new equilibrium state, and is obtained in downstream control, volume control and ELFLO/CARDD control. Downstream and volume control have "positive" storage wedges in the canal reaches. The effect is that the water is instantaneous available at increasing demands, while the operation efficiency becomes 100%. ELFLO/CARDD control has a "negative" storage wedge in the canal reaches. The effect is that the canal storage has to be filled first before a new equilibrium state is reached. This introduces a time lag in the system, while there are also operational losses during decreasing discharges.
3 Ankum, P.. 1992. Desired behavior of irrigation systems. In Feyen, J.; Mwendera, E.; Badji, M. (Eds.), Advances in planning, design and management of irrigation systems as related to sustainable land use: Proceedings of an International Conference organized by the Center for Irrigation Engineering of the Katholieke Universiteit Leuven in cooperation with the European Committee for Water Resources Management, Leuven, Belgium, 14-17 September 1992. Vol. 1. Leuven, Belgium: Center for Irrigation Engineering. pp.245-254.
Irrigation management ; Irrigation scheduling ; Water allocation ; Water delivery ; Water demand ; Flow control ; Policy
(Location: IWMI-HQ Call no: 631.7.1 G000 FEY Record No: H014353)
In literature, different classifications on irrigation main system management are used at present. It is concluded that these classifications are not logic in their concepts, and that they depend heavily on concepts as developed at farm level. A new classification is proposed here, based on the water allocation at the "tertiary offtake." A distinction is made between (i) the parameters related to the decision-making on the water allocation (on-demand, semi-demand, arranged), and (ii) the parameters related to the method of water allocation (fixed, intermittent, varied discharge). The term "on-demand" is used when water is immediately available at the wish of the user. The term "semi-demand" is used when this water is only available after some time, e.g. because of the time-lag in the (upstream) control system. The term "arranged" refers to a water delivery that is not based on water requests of the users, but on pre-set arrangements. The above parameters can be translated into a water management plan (no management, central management, self management), and ultimately into the required hardware of the flow control system and its operation rules.
4 Ankum, P.. 1992. Classification of flow control systems for irrigation. In Feyen, J.; Mwendera, E.; Badji, M. (Eds.), Advances in planning, design and management of irrigation systems as related to sustainable land use: Proceedings of an International Conference organized by the Center for Irrigation Engineering of the Katholieke Universiteit Leuven in cooperation with the European Committee for Water Resources Management, Leuven, Belgium, 14-17 September 1992. Vol. 1. Leuven, Belgium: Center for Irrigation Engineering. pp.265-274.
(Location: IWMI-HQ Call no: 631.7.1 G000 FEY Record No: H014355)
In order to maintain an effective water management in irrigation systems, methods and means of flow control have developed significantly in the past decades. However, it is still not yet understood what type of flow control system should be applied in a specific irrigation system, and under what circumstances. This article presents a classification of flow control in irrigation main systems, based on the different control parameters. A major division can be made into systems with (i) no management, (ii) central management, and (iii) self management. The term "self management" means that the system itself converges to a new equilibrium state. The regulation of these systems can be either (i) no regulation, (ii) manually or (iii) automatically, whereas automatic regulation is not similar to self management. Control systems can be classified into: proportional control, upstream control, downstream control, volume control, ELFLO control and CARDD control, each of them having their advantages and disadvantages.
5 Ankum, P.. 1993. Operation specifications of irrigation main systems. In ICID, 15th International Congress on Irrigation and Drainage, The Hague, The Netherlands, 1993: Water management in the next century. Transactions: Vol.1-A, Question 44, RI-R35: Planning and design of irrigation and drainage systems. pp.119-130.
Water allocation ; Irrigation systems ; Farmer participation ; Decision making ; Water distribution ; Water delivery
(Location: IWMI-HQ Call no: ICID 631.7 G000 ICI Record No: H015071)
6 Ankum, P.. 1993. Canal storage and flow control methods in irrigation. In ICID, 15th International Congress on Irrigation and Drainage, The Hague, The Netherlands, 1993: Water management in the next century. Transactions: Vol.1-B, Question 44, R36-R72: Planning and design of irrigation and drainage systems. New Delhi, India: ICID. pp.663-679.
(Location: IWMI-HQ Call no: ICID 631.7 G000 ICI Record No: H015236)
7 Ankum, P.. 1993. Some ideas on the selection of flow control structures for irrigation. In ICID, 15th International Congress on Irrigation and Drainage, The Hague, The Netherlands, 1993: Water management in the next century. Transactions: Vol.1-B, Question 44, R36-R72: Planning and design of irrigation and drainage systems. New Delhi, India: ICID. pp.855-869.
(Location: IWMI-HQ Call no: ICID 631.7 G000 ICI Record No: H015251)
8 Ankum, P.. 1996. Selection of operation methods in canal irrigation delivery systems. In International Commission on Irrigation and Drainage (ICID); FAO. Irrigation scheduling: from theory to practice. Proceedings of the ICID/FAO Workshop on Irrigation Scheduling, Rome, Italy, 12-13 September 1995. Rome, Italy: FAO. pp.287-295. (FAO Water Reports 8)
Irrigation canals ; Flow control ; Operations ; Maintenance ; Water delivery ; Irrigation scheduling
(Location: IWMI HQ Call no: 631.7.1 G000 FAO Record No: H021337)
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