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Tecnología y ciencias del agua

versión On-line ISSN 2007-2422

Resumen

LOPEZ-CANTENS, Gilberto de Jesús et al. Verification of numeral procedures for simulation of gate maneuvers. Tecnol. cienc. agua [online]. 2014, vol.5, n.1, pp.43-56. ISSN 2007-2422.

Applying Saint Venant equations in reaches of irrigation canals requires defining internal boundary conditions at the sites where they are located control structures like gates, considering the dynamic equation to transmit hydraulic information from one side of the structure to continue on the other. In this study three numerical procedures for maneuvering gates are tested to verify whether they represent the movement of these control structures, minimizing flow phase shifts after a maneuver. To this end, the Rehbock canal of the Autonomous University of Chapingo was used. Automated measurements of water depth and flow were taken. Results show that in progressive maneuvering with restart of water depth, flow through the gate and near it tends to be similar, while oscillations diminish over time, a phenomenon which is characteristic of water dynamics in canals. Moreover, when depth is the variable to be regulated it is advisable to use instantaneous or progressive maneuvering with restart of flow. On the other hand, if the variable is flow, progressive maneuvering with restart of depth is preferred. Simulation of progressive maneuvering with restart of depth is the procedure that best represents water dynamics in the structure.

Palabras llave : gates movement; simulation model; unsteady flow; control structures.

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