Develop a numerical model to evaluate furrow irrigation performance /
A numerical model to evaluate furrow irrigation performance
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1996.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | A numerical model to evaluate furrow irrigation performance and percent deep percolation were slightly sensitive to characteristics in conjunction with the boundary conditions Colorado. The measured data included a variety of soil during irrigation more accurately than the Kostiakov furrow. On the furrow boundaries, the method of good agreement with observed peak flowrates. The average good job of predicting recession times. The shape of infiltration equation coefficients, the advance time and infiltration equation described the infiltration process infiltration equation. infiltration process. The model accurately predicted advance less than 7%. Irrigation uniformity, root zone efficiency, modified Kostiakov equation was utilized to describe the momentum equations for unsteady gradually varied flow in a of advance time was less than 5%. The model did a reasonably outflow hydrographs. The predicted peak flow rates were in predicted outflow hydrographs matched the shape of observed relative absolute error of predicted total outflow volume was runoff volume were moderately sensitive to a', and highly second order accurate explicit finite difference method, was sensitive to f,, than to a'or k'. The modified Kostiakov sensitive to k'and f,,. Irrigation performance was more sensitivity to variations in the modified Kostiakov the pattern distribution efficiency and percent runoff volume time. In three of the data sets the average absolute error times, and outflow hydrographs with field data. Field data types, flowrates, furrow lengths, and times of cutoff. The utilized to solve the complete form of the continuity and variations in furrow bottom slope and surface roughness while was developed and tested. The MacCormack scheme, which is a was tested by comparing predicted advance times, recession was utilized to solve the furrow flow equation. The model were collected from four different locations in Texas and were moderately sensitive. In the analysis of model |
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| Item Description: | "Major subject: Civil Engineering". Vita. |
| Physical Description: | xiii, 151 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references. |