Furrow Geometric Parameters
Publication: Journal of Irrigation and Drainage Engineering
Volume 117, Issue 5
Abstract
Furrow shape information is required for modeling and evaluating furrow irrigation. Currently used shape models assume the furrow perimeter is rigid so that only the flow depth increases with capacity. Actual furrow perimeters are not rigid and may widen as their capacity increases. If the furrow width increases proportionally with flow depth, the flow cross‐sectional shape remains constant and only the size increases with capacity. This constant‐shape model results in simple generalized relationships between the hydraulic and geometric parameters, which simplifies analysis of the complicated interactions that occur during furrow irrigation. The two shape models are compared conceptually and against field measurements. The rigid‐perimeter model better matches field‐measured furrow shapes and is easier to rationalize conceptually. However, both models match the important relationships between furrow geometric parameters and hydraulic parameters equally well. The most important relationship between flow area and uniform flow section factor is insensitive to both the model and shape. The predictions of both models are more sensitive to the furrow top width‐to‐flow depth ratio than to shape.
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References
1.
Chow, V. T. (1959). Open channel hydraulics. McGraw‐Hill, Inc., New York, N.Y., 128.
2.
Elliott, R. L. (1980). Furrow irrigation field evaluation data. Dept. of Agr. And Chem. Engrg., Colorado State Univ., Ft. Collins, Colo.
3.
Elliott, R. L., Walker, W. R., and Skogerboe, G. V. (1983). “Furrow irrigation advance rates: a dimensionless approach.” Trans., American Society of Agricultural Engineers, 26(6), 1722–1725, 1731.
4.
“Evaluation of furrow irrigation systems, ASAE engineering practice No. 419.” Standards 1989, Amer. Society of Agric. Engrs., St. Joseph, Mich., 569–574.
5.
Fangmeier, D. D., and Ramsey, M. K. (1978). “Intake characteristics of irrigation furrows.” Trans., American Society of Agricultural Engineers, 21 (4), 696–700, 705
6.
Foster, G. R., and Lane, L. J. (1983). “Erosion by concentrated flow in farm fields.” Proc. D. B. Simons Symp. on Erosion and Sedimentation, Colorado State University.
7.
“Furrow irrigation” (1983). Soil conservation service national engineering handbook., U.S. Government Printing Office.
8.
Kemper, W. D., Trout, T. J., Brown, M. J., and Rosenau, R. C. (1985). “Furrow erosion and water and soil management.” Trans., American Society of Agricultural Engineers, 28 (5), 1564–1572
9.
Lane, L. J., and Foster, G. R. (1980). “Modeling channel processes with changing land use.” Watershed Management, Proc. Symp. on Watershed Mgmt., ASCE.
10.
Mostafazadehfard, G. (1985). “Furrow hydraulics with two‐dimensional infiltration,” thesis presented to Utah State University at Logan, Utah, in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
11.
Samani, Z. A. (1983). “Infiltration under surge flow irrigation,” thesis presented to Utah State University at Logan, Utah, in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
12.
Trout, T. J. (1983). “Measurement device effect on chanel water loss.” J. Irrig. And Drain. Div., ASCE, 109 (1), 60–71
Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 117 • Issue 5 • September 1991
Pages: 613 - 634
Copyright
Copyright © 1991 ASCE.
History
Published online: Sep 1, 1991
Published in print: Sep 1991
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