Design Criteria for Parallel Baffle Modules

Document Type : Research Article

Authors

1 Former MSc. Student, Irrigation and Reclamation Engrg. Dept., University of Tehran, Tehran, Iran

2 Professor, Irrigation and Reclamation Engrg. Dept., University of Tehran, Tehran, Iran

3 Former PhD. Student, Irrigation and Reclamation Engrg. Dept., University of Tehran, Tehran, Iran

Abstract

A baffle sluice gate was proposed for delivering a relatively constant discharge within a specific variation range of water surface elevation. Its design criteria were based on baffle’s discharge coefficient and the water surface elevations in which the subsequent baffle takes over the flow controls. The structure, which could play effective role in delivering accurate volume of water, should be used in parallel (dual) modules, while published design criteria deal with the application of an individual module. In this research, the discharge coefficient of each baffle was determined considering the impact of the presence of other baffles. Also, the water surface in which the flow control is given to the next baffle was more accurately defined based on the actual performance of the module. Then, the new design method for parallel modules was accordingly proposed. The proposed design method decreased the deviation in water delivery, within the predefined flow depth variation range, to about 1%, while it was about 8% for previous design methods. In addition to the mentioned significant improvement in water delivery, parallel installation of the modules facilitates the application of the structure in higher levels of an irrigation network, than the one originally was considered by its capability of delivering larger discharges.

Keywords

References

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  • Receive Date: 07 March 2015
  • Accept Date: 07 March 2015

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