Your search found 17 records
1 Schuurmans, W.. 1990. Analytical formulae of the response time of irrigation canals. Irrigation and Drainage Systems, 4(1):37-58.
(Location: IWMI-HQ Call no: PER Record No: H06135)
Two analytical methods are discussed to determine the response time of an open canal system after a change in flow rate. The first method of canal routing is a simple method and is used to determine the filling time of short canal reaches. The prediction error increases for longer canal reaches as a result of neglecting the non-uniform flow conditions. The second method to determine the response time after a change in flow rate, the diffusion approximation, is a more accurate method and valid for canal reaches of any length.
2 Brouwer, R.; Schuurmans, W.. 1990. Use of real time scheduling computer programs in the Netherlands. In ICID Fourteenth International Congress on Irrigation and Drainage, Rio de Janeiro, Brazil: Transactions. New Delhi, India: ICID. Vol.1D Symposium (R1-R12):127-146.
(Location: IWMI-HQ Call no: ICID 631.7 G000 ICI Record No: H08784)
3 Schuurmans, W.. 1991. A model to study the hydraulic performance of controlled irrigation canals. Delft, The Netherlands: Centre for Operational Water Management. xii, 128p. + appendices.
(Location: IWMI-HQ Call no: 631.7.1 G000 SCH Record No: H08993)
4 Schuurmans, W.. 1991. Operational performance of canal control systems. Water Resources Management, 5(2):149-159.
(Location: IWMI-HQ Call no: PER Record No: H09493)
5 Schuurmans, W.; Brouwer, R.; Wonink, P. 1992. Identification of control system for canal with night storage. Journal of Irrigation and Drainage Engineering, 118(3):360-369.
(Location: IWMI-HQ Call no: PER Record No: H010389)
6 Contractor, D. N.; Schuurmans, W.. 1993. Informed use and potential pitfalls of canal models. Journal of Irrigation and Drainage Engineering, 119(4):663-672.
Irrigation canals ; Mathematical models ; Flow control ; Hydraulics ; Calibrations ; Models ; Computer techniques
(Location: IWMI-HQ Call no: PER Record No: H013057)
Numerical models of unsteady flow in canals are used in the design, analysis, and operation of irrigation-canal systems. Their informed use requires knowledge of the potential pitfalls and sources of error. There are three model parameters that influence errors in the model output. The influence of the Courant number on the accuracy of the results is studied. Calibration of topographical and hydraulic parameters and verification of the model are important steps in the successful implementation of canal models. Two tests are presented that can be used to check the accuracy and stability of the programs. The first is a mass-conservation test, and the second is ramp-discharge test. The results of these tests on several commercially available programs are presented. The intricacies of model calibration, model interpretation, and performance parameters are also discussed. 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.311-322.
7 Clemmens, A. J.; Holly, F. M.; Schuurmans, W.. 1993. Description and evaluation of program: DUFLOW. Journal of Irrigation and Drainage Engineering, 119(4):724-734.
(Location: IWMI-HQ Call no: PER Record No: H013061)
DUFLOW is a microcomputer software package for simulating one-dimensional unsteady flow in open-channel systems. The program is designed for simple networks of channels with simple structures. Water levels and flow rates are determined by solving the St. Venant equations of continuity and momentum with the Preissmann scheme. The program has a user interface for conveniently entering a description of the network conditions. DUFLOW is public-domain soft- ware and is distributed at a nominal cost. Although the program cannot handle some of the more-sophisticated modeling needs (e.g., dry beds, automatic gates), it is useful for first time users of canal-network software. Limited user support is available. 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.418-424.
8 Schuurmans, J.; Schuurmans, W.; van Leeuwen, J. 1992. Improved real time control of water deliveries. 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. 2. Leuven, Belgium: Center for Irrigation Engineering. pp.485-494.
Water delivery ; Regulated flow ; Downstream control ; Simulation ; Computer techniques ; Irrigation canals / USA / California
(Location: IWMI-HQ Call no: 631.7.1 G000 FEY Record No: H014429)
9 Schuurmans, W.; van der Krogt, W. N. M. 1992. Decision support system for irrigation networks. 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. 2. Leuven, Belgium: Center for Irrigation Engineering. pp.727-736.
Decision support tools ; Irrigation management ; Water management ; Irrigation systems ; Irrigated farming ; Monitoring ; Performance evaluation ; Management training ; Simulation models ; Computer techniques ; GIS ; Performance indexes / Indonesia / Egypt / Cidurian Irrigation Project / Fayoum
(Location: IWMI-HQ Call no: 631.7.1 G000 FEY Record No: H014453)
10 van der Krogt, W.; Schuurmans, W.. 1995. OMIS: a management information system. ITIS (Information Techniques for Irrigation Systems), 2(1):17-20.
Management Information Systems ; Irrigation management ; Water management ; Simulation models ; Performance / Egypt / Fayoum
(Location: IWMI HQ Call no: PER Record No: H017580)
11 Gijsbers, P. J. A.; Schuurmans, W.; Brouwer, R. 1996. Valuing water as an economic good. In ICID, 16th Congress on Irrigation and Drainage, Cairo, Egypt, 1996: Sustainability of Irrigated Agriculture - Transactions, Vol.1E, Special session: The future of irrigation under increased demand from competitive uses of water and greater needs for food supply - R.13; Symposium: Management Information Systems in irrigation and drainage. New Delhi, India: ICID. pp.227-240.
Water use ; Economic evaluation ; Water resource management ; Case studies ; Optimization ; Models ; Rivers ; Water control / Netherlands / Meuse River
(Location: IWMI-HQ Call no: ICID 631.7.1 G000 ICI Record No: H019584)
12 Rogers, D. C.; Schuurmans, W.; Keith, J. W. 1991. Canal model evaluation and comparison criteria. 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.323-329.
(Location: IWMI-HQ Call no: 631.7 G430 RIT Record No: H019895)
The ASCE Task Committee on "Irrigation Canal System Hydraulic Modeling" was formed to evaluate existing canal unsteady flow models (computer programs) and to provide guidance to potential users on the use and limitations of these models. Model evaluation is intended to describe each program's capabilities, application, and usefulness. This paper presents and organizes criteria for evaluating and comparing canal hydraulic models.
13 Schuurmans, W.. 1991. Description and evaluation of program MODIS. 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.407-417.
Irrigation systems ; Large-scale systems ; Canal regulation techniques ; Performance indexes ; Simulation models
(Location: IWMI-HQ Call no: 631.7 G430 RIT Record No: H019904)
MODIS is an implicit hydrodynamic modeling package that has been developed to investigate the hydraulic performance of dynamic controlled irrigation systems. The model's most apparent features are its accurate computation of a wide range of standard structures and its many operation possibilities. Furthermore, the model is able to compute performance indicators which allow for a fast and diagnostic interpretation of the model results. The user interface is not menu driven and the program is not public domain. The program is most suitable for experienced users and for large systems.
14 Schuurmans, W.; Pichel, G. 1996. Management of water delivery systems (RIBASIM/OMIS) In van den Broek, B. J. (Ed.), Dutch experience in irrigation water management modelling. Wageningen, Netherlands: DLO Winand Staring Centre. pp.87-102.
Irrigation management ; Water management ; Water delivery ; Simulation models ; Computer models ; River basins ; Hydrology ; Water allocation ; Case studies ; Water reuse ; Performance evaluation / Senegal / Egypt / Anamb River / Kayanga River / Fayoum Irrigation Scheme
(Location: IWMI-HQ Call no: 631.7.1 G916 VAN Record No: H011212)
15 Schuurmans, J.; Schuurmans, W.; Berger, H.; Meulenberg, M.; Brouwer, R. 1997. Control of water levels in the Meuse River. Journal of Irrigation and Drainage Engineering, 123(3):180-184.
(Location: IWMI-HQ Call no: PER Record No: H020499)
16 Schuurmans, W.; van der Krogt, W. N. M. 1992. Experiences with management support models in Egypt and Indonesia. In IIMI; CEMAGREF. International Workshop on The Application of Mathematical Modelling for the Improvement of Irrigation Canal Operation, October 26-30, 1992, Montpellier, France. pp.41-53.
Irrigation management ; Irrigation programs ; Decision support tools ; Models ; Management Information Systems ; Crop production ; Water allocation / Egypt / Indonesia / West Java / Cidurian Irrigation Schemes / Fayoum Irrigation Scheme
(Location: IWMI-HQ Call no: IIMI 631.7.1 G000 IIM Record No: H022410)
(1.72 MB)
17 Monem, M. J.; Schuurmans, W.. 1992. Performance of canal delivery strategies and control systems. In IIMI; CEMAGREF. International Workshop on The Application of Mathematical Modelling for the Improvement of Irrigation Canal Operation, October 26-30, 1992, Montpellier, France. pp.307-315.
Irrigation canals ; Control systems ; Canal regulation techniques ; Water delivery ; Water conveyance ; Simulation models ; Performance evaluation ; Performance indexes / Bangladesh / Ganges-Kobadak Irrigation Project / Kushtia Canal
(Location: IWMI-HQ Call no: IIMI 631.7.1 G000 IIM Record No: H022428)
(0.3 MB)
Powered by DB/Text WebPublisher, from
