Scenarios for improvement of water distribution in Doroodzan irrigation network based on hydraulic simulation

Afrasiabikia, Peyman; Rizi, Atefeh Parvaresh; Javan, Mitra

doi:10.1016/j.compag.2017.02.011

Cited by 18 publications

(8 citation statements)

References 11 publications

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“…These indicators can be used for an intake or a group of intakes in a subsystem or for the entire irrigation network (Dejen, 2015). The adequacy indicator shows the ability of the operational method to deliver the required irrigation water (Afrasiabikia et al ., 2017). The adequacy indicator for a region or subset ( R ) that is serviced by a system in an interval ( T ) is calculated from Equation (Molden and Gates, 1990):

P_{A} = \frac{1}{T} \sum_{T} ((), \frac{1}{R} \sum_{R} p_{A}) if ({}, \begin{array}{l} Q_{D} \leq Q_{R} \to p_{A} = \frac{Q_{normalD}}{Q_{normalR}} \\ otherwise \to p_{A} = 1 \end{array})

where P A is adequacy of distribution, p A is the point of evaluation of adequacy distribution, Q D is delivered flow rate, Q R is required flow rate and the terms

\frac{1}{T} \sum_{T} (())

and

\frac{1}{R} \sum_{R} (())

are temporal and spatial average, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…These indicators can be used for an intake or a group of intakes in a subsystem or for the entire irrigation network (Dejen, 2015). The adequacy indicator shows the ability of the operational method to deliver the required irrigation water (Afrasiabikia et al, 2017). The adequacy indicator for a region or subset (R) that is serviced by a system in an interval (T) is calculated from Equation 1 (Molden and Gates, 1990):…”

Section: Hydraulic Performance Indicatorsmentioning

confidence: 99%

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Challenges of irrigation water distribution from the viewpoint of socio‐hydraulic relations*

Azari

Rizi

2021

Irrigation and Drainage

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Evaluation of the hydraulic performance of irrigation structures should be used in proper planning of water distribution and the removal of social tensions at water user level. There are several hydraulic indicators that could be interpreted based on social realities. In this study, besides determination of water distribution and conveyance indicators of the Behbahan irrigation scheme, social status was investigated in relation to them. Accordingly, adequacy, dependability and equity indicators in this scheme are poor. Meanwhile, 54% of water users are not satisfied with the performance of water delivery. Based on the questionnaires, training about water distribution is the main request by water users. In this research with a different view about the evaluation of irrigation schemes, existing problems were described from the social perspective. The adequacy indicator is in good condition upstream of the network, while in downstream it is about 40%. Although the knowledge and awareness of water users upstream and downstream are almost equal, only 50% of downstream water users have a relative desire to participate in water services (68% for upstream water users) and their satisfaction is within 20% (62% for upstream water users). Finally, evaluation of hydraulic indicators will be completed and will solve more problems, by considering the social roots of the results. K E Y W O R D S irrigation services, performance of operation, socio-hydraulic performance, water users' behaviour Résumé L'évaluation des performances hydrauliques des ouvrages d'irrigation serait utilisée pour planifier correctement la distribution de l'eau et éliminer les tensions sociales au niveau des utilisateurs de l'eau. Il existe plusieurs indicateurs hydrauliques qui pourraient être interprétés en fonction des réalités sociales. Dans cette étude, en plus de la détermination des indicateurs de distribution et d'adduction d'eau du projet d'irrigation de Behbahan, le statut social a été étudié par rapport à eux. En conséquence, les indicateurs d'adéquation, de fiabilité et d'équité de ce programme sont médiocres. Pendant ce temps, 54% * Les défis de la distribution de l'eau d'irrigation au point de vue des relations socio-hydrauliques

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P_{A} = \frac{1}{T} \sum_{T} ((), \frac{1}{R} \sum_{R} p_{A}) if ({}, \begin{array}{l} Q_{D} \leq Q_{R} \to p_{A} = \frac{Q_{normalD}}{Q_{normalR}} \\ otherwise \to p_{A} = 1 \end{array})

where P A is adequacy of distribution, p A is the point of evaluation of adequacy distribution, Q D is delivered flow rate, Q R is required flow rate and the terms

\frac{1}{T} \sum_{T} (())

and

\frac{1}{R} \sum_{R} (())

are temporal and spatial average, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…These indicators can be used for an intake or a group of intakes in a subsystem or for the entire irrigation network (Dejen, 2015). The adequacy indicator shows the ability of the operational method to deliver the required irrigation water (Afrasiabikia et al, 2017). The adequacy indicator for a region or subset (R) that is serviced by a system in an interval (T) is calculated from Equation 1 (Molden and Gates, 1990):…”

Section: Hydraulic Performance Indicatorsmentioning

confidence: 99%

Challenges of irrigation water distribution from the viewpoint of socio‐hydraulic relations*

Azari

Rizi

2021

Irrigation and Drainage

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“…Extended studies of hydromechanical processes occurring in the working channel of a magnetic peristaltic pump can be performed by conducting a computational experiment or with the help of a carefully designed physical experiment [6][7][8][9][10][11][12]. However, phenomena of practical interest accompanying the process of moving a heterogeneous flow through a channel of variable cross section are characterized by multidimensionality, nonstationarity, and the presence of boundary layers, which makes the implementation of comprehensive physical modeling very difficult.…”

Section: Methodsmentioning

confidence: 99%

Modeling of wave processes when the heterogeneous flow is moving in a low-frequency magnetic peristaltic pump of pulsating type

Vasilyeva¹

2019

Vib. proced.

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The paper presents the results of a multiphysical simulation of the movement of a heterogeneous flow in the working channel of a magnetic peristaltic pump, which describes in detail the state of the flow particles at all points of the considered area at different points in time, taking into account the design parameters of the channel. The developed model made it possible to reveal a rational range of parameters in the conditions of the wave variation of the internal cross section of the working channel of a magnetic peristaltic pump in a running magnetic field.

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“…Given the breadth and complexity of irrigation systems, planning for the operation of available water resources is not possible manually or/and experimentally. Consequently using the results of flow simulation can be the best solution for the planning and operation of the irrigation schemes (Afrasiabikia et al 2017). Most of the times determination of a reliable operation method is not possible with the physical modelling or experimental approaches, and the mathematical models must be utilized.…”

Section: Introductionmentioning

confidence: 99%

“…Most of the times determination of a reliable operation method is not possible with the physical modelling or experimental approaches, and the mathematical models must be utilized. Afrasiabikia et al (2017) conducted a research based on the hydraulic modelling and water distribution indicators to conclude the best practical operation scenarios in Doroodzan large irrigation scheme in Iran. They also illustrated the status of water distribution in the current situation of network, especially water inadequacy and water losses in the secondary canals.…”

Section: Introductionmentioning

confidence: 99%

Rehabilitation of operation regimes in aged irrigation schemes based on hydraulic simulation

2022

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The selection and employment of proper methods in water distribution causes increasing in water productivity and the level of satisfaction of water users. It is faced with more difficulties in aged irrigation projects due to temporal changes such as changes in the crop patterns, development of the command area and destruction of canals and hydraulic structures. The plan of operation methods have some hydraulic and social complexities and therefore is usually simplified or implemented experimentally. This research investigates the best options for water distribution to the paddy fields in a subunit of Sefidroud irrigation scheme based on field survey, recording real data and hydraulic simulation with employing SOBEK hydrodynamic model. Different operation scenarios were defined and then simulated in the current physical state of the scheme through replacing the exhausted intake structures with sluice gates. Finally, the better operation scenarios during the irrigation season were suggested based on the distribution indices. The results show that in spite of the current situation, water loss could reach the minimum by employing modification scenarios and indices of adequacy and equity of water distribution improve.

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Scenarios for improvement of water distribution in Doroodzan irrigation network based on hydraulic simulation

Cited by 18 publications

References 11 publications

Challenges of irrigation water distribution from the viewpoint of socio‐hydraulic relations*

Challenges of irrigation water distribution from the viewpoint of socio‐hydraulic relations*

Modeling of wave processes when the heterogeneous flow is moving in a low-frequency magnetic peristaltic pump of pulsating type

Rehabilitation of operation regimes in aged irrigation schemes based on hydraulic simulation

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