DEVELOPING WAVE TRAVEL AND RESPONSE TIMES RELATIONSHIPS BASED ON DW MODEL FOR IRRIGATION CANALS AND ITS APPLICATION IN ESTIMATING OPERATIONAL LOSSES

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VATANKHAH A.R.; KOUCHAKZADEH S.

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Journal: Iranian Journal of Irrigation and Drainage Year:2008 | Volume:2 | Issue:1 Page(s): 17-30

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Title

DEVELOPING WAVE TRAVEL AND RESPONSE TIMES RELATIONSHIPS BASED ON DW MODEL FOR IRRIGATION CANALS AND ITS APPLICATION IN ESTIMATING OPERATIONAL LOSSES

Author(s)

VATANKHAH A.R. | KOUCHAKZADEH S. | Issue Writer Certificate

Keywords

DIFFUSIVE WAVEQ2

EQUIVALENT HYDRAULIC SENSITIVITY INDICATORQ3

ANALYTICAL SOLUTIONQ2

RESPONSE TIMEQ3

TRAVEL TIMEQ3

OPERATIONAL LOSSESQ3

Abstract

Improvement of irrigation network operation calls for identifying the unsteady flow characteristics and determining its influences on the operation process. Wave generation and propagation because of normal structure operations are very common phenomena in irrigation networks. Along a channel reach the characteristics, i.e. shape and height, of the transmitted wave change during its movement, which are usually considered one dimensional flow and determined by solving the Saint Venant equations. However, the Froude number in the irrigation canals is usually small enough to drop the inertia terms from the dynamic equation to yield DIFFUSIVE WAVE model which could effectively be used in determining the flow behavior within the canal. In this research based on the solution of DIFFUSIVE WAVE model, analytical relationships were developed to determine the travel and RESPONSE TIMEs of a wave generated by an abrupt discharge change in the upstream side of a channel reach. The outputs of the proposed relationships were compared with that of a full hydrodynamic model which illustrated the validity and effectiveness of the proposed method. The relationships of travel And RESPONSE TIMEs were, then, employed for determining the OPERATIONAL LOSSES in irrigation canal to present their validity and usefulness for network management.

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APA: Copy

VATANKHAH, A.R., & KOUCHAKZADEH, S.. (2008). DEVELOPING WAVE TRAVEL AND RESPONSE TIMES RELATIONSHIPS BASED ON DW MODEL FOR IRRIGATION CANALS AND ITS APPLICATION IN ESTIMATING OPERATIONAL LOSSES. IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, 2(1), 17-30. SID. https://sid.ir/paper/131622/en

Vancouver: Copy

VATANKHAH A.R., KOUCHAKZADEH S.. DEVELOPING WAVE TRAVEL AND RESPONSE TIMES RELATIONSHIPS BASED ON DW MODEL FOR IRRIGATION CANALS AND ITS APPLICATION IN ESTIMATING OPERATIONAL LOSSES. IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE[Internet]. 2008;2(1):17-30. Available from: https://sid.ir/paper/131622/en

IEEE: Copy

A.R. VATANKHAH, and S. KOUCHAKZADEH, “DEVELOPING WAVE TRAVEL AND RESPONSE TIMES RELATIONSHIPS BASED ON DW MODEL FOR IRRIGATION CANALS AND ITS APPLICATION IN ESTIMATING OPERATIONAL LOSSES,” IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, vol. 2, no. 1, pp. 17–30, 2008, [Online]. Available: https://sid.ir/paper/131622/en

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