ACCURACY ASSESSMENT OF VOLUME BALANCE MODEL SOLUTION METHODS IN ESTIMATION OF ADVANCE PHASE OF FURROW IRRIGATION

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ZEBARDAST SONIA; RIAHI FARSANI HAMED; TABATABAEI SAYYED HASAN

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Journal: JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION Year:2014 | Volume:4 | Issue:1 Page(s): 1-12

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Title

ACCURACY ASSESSMENT OF VOLUME BALANCE MODEL SOLUTION METHODS IN ESTIMATION OF ADVANCE PHASE OF FURROW IRRIGATION

Author(s)

ZEBARDAST SONIA | RIAHI FARSANI HAMED | TABATABAEI SAYYED HASAN | Issue Writer Certificate

Keywords

ADVANCE PHASEQ2

FURROW IRRIGATIONQ2

SUBSURFACE SHAPE FACTOR COEFFICIENTQ2

VOLUME BALANCE MODELQ2

Abstract

Nowadays optimal management and conservation of water and soil resources seems to be more essential than ever before. The issue of surface irrigation systems as a major consumer of water in the country is very important. Accurate prediction of the ADVANCE PHASE is important for the design and evaluation of these systems. The main objective of this study was to evaluate the accuracy of solving methods of VOLUME BALANCE MODEL (VBM) in the estimation of the water advance of FURROW IRRIGATION. In this study, Michel, Philip, Power functions and Return functions solving methods were used and also new models were proposed. For each method, a computer program was written in Matlab and to measure the precision of solving Methods mentioned above, gathered data of seven fields in two-time irrigation (A: water-soil and B:middle growth) in Chaharmahal and Bakhtyari province were used. The statistics of solving methods mentioned were obtained by use of root mean square error (RMSE), coefficient residual mass (CRM) and model efficiency factor (EF). The results showed that Michel method has a lower RMSE (27.6 and 57.6 meters values for two-time irrigation respectively) and CRM (0.06 value) and the higher EF (-1.07 value) than the other solving methods of VOLUME BALANCE MODEL. Other methods have close results for RMSE (33.3 and 61.4 meters values for two-time irrigation), CRM (0.21 value) and EF (-2.65 value). As a result, the best method to solve VBM is Michel's method. Accurate determination of infiltration coefficients and selection of infiltration equation are effective factors for model accuracy. Therefore, considering subsurface shape factor effect, the best suggestion for this coefficient is Kiefer equation.

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APA: Copy

ZEBARDAST, SONIA, RIAHI FARSANI, HAMED, & TABATABAEI, SAYYED HASAN. (2014). ACCURACY ASSESSMENT OF VOLUME BALANCE MODEL SOLUTION METHODS IN ESTIMATION OF ADVANCE PHASE OF FURROW IRRIGATION. JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION, 4(1), 1-12. SID. https://sid.ir/paper/232253/en

Vancouver: Copy

ZEBARDAST SONIA, RIAHI FARSANI HAMED, TABATABAEI SAYYED HASAN. ACCURACY ASSESSMENT OF VOLUME BALANCE MODEL SOLUTION METHODS IN ESTIMATION OF ADVANCE PHASE OF FURROW IRRIGATION. JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION[Internet]. 2014;4(1):1-12. Available from: https://sid.ir/paper/232253/en

IEEE: Copy

SONIA ZEBARDAST, HAMED RIAHI FARSANI, and SAYYED HASAN TABATABAEI, “ACCURACY ASSESSMENT OF VOLUME BALANCE MODEL SOLUTION METHODS IN ESTIMATION OF ADVANCE PHASE OF FURROW IRRIGATION,” JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION, vol. 4, no. 1, pp. 1–12, 2014, [Online]. Available: https://sid.ir/paper/232253/en

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