DIRECT SOLUTION TO SURFACE IRRIGATION ADVANCE INVERSE PROBLEM

被引：10

作者：

CLEMENS, AJ

机构：

[1] U.S. Water Conservation Lab, USDA/ARS, Phoenix, AZ

来源：

JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING | 1991年 / 117卷 / 04期

关键词：

D O I：

10.1061/(ASCE)0733-9437(1991)117:4(578)

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

A modification to the double-sweep routine commonly used to solve the continuity and momentum equations for surface irrigation models has been developed to allow the solution of one global parameter at each time step. Coefficients for the double-sweep routine are presented for the Kostiakov infiltration parameter k, the Manning n, and the time step delta-t. A procedure is also developed for determining the entire infiltration relation (e.g., both Kostiakov exponent a and constant k) during advance. It is shown that this estimated relation is subject to errors caused by assumptions regarding the volume of water in surface storage near the advancing tip. Other errors in field measurements also significantly impact estimates of infiltration and roughness made during advance. Such errors are particularly problematic when trying to use estimates during advance to predict conditions at the end of the irrigation, as is the case for feedback control.

引用

页码：578 / 595

页数：18

共 23 条

[1]

Border irrigation, National engineering handbook, (1974)

[2]

Bos M.G., Discharge measurement structures, Publication No. 20, (1989)

[3]

Bos M.G., Replogle J.A., Clemmens A.J., Flow measuring flumes for open channel systems, (1984)

[4]

Clemmens A.J., Evaluation of infiltration measurements for border irrigation, Agric. Water Mgmt, 3, 4, pp. 251-267, (1981)

[5]

Clemmens A.J., Evaluating infiltration for border irrigation models, Agric. Water Mgmt, 5, 2, pp. 159-170, (1982)

[6]

Clemmens A.J., Surface irrigation modeling, pp. 23-85, (1986)

[7]

Clemmens A.J., Feedback control for surface irrigation management, Visions of the future: Proc. Third Nat. Irrigation Symp, pp. 255-260, (1990)

[8]

Clemmens A.J., Dedrick A.R., Limits for practical level basin design, J. Irrig. Drain. Div, 108, 2, pp. 127-141, (1982)

[9]

Clemmens A.J., Dedrick A.R., Irrigation water delivery performance, J. Irrig. Drain. Engrg, 110, 1, pp. 1-13, (1984)

[10]

Elliott R.L., Eisenhauer D.E., Volume balance techniques for measuring infiltration in surface irrigation, ASAE Paper No. 83-2520, (1983)

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