Application of a finite-element model to overland and channel flow in arid areas

Persistent Link:
http://hdl.handle.net/10150/191804
Title:
Application of a finite-element model to overland and channel flow in arid areas
Author:
El-Ansary, Amgad Saad El-Din.
Issue Date:
1984
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
A mathematical model to stimulate overland and channel flow using the finite element technique was adapted and applied to a small semiarid rangeland watershed (2035 acres) in the USDA Walnut Gulch experimental watershed in the southwestern United States. The Holtan equation was used to estimate precipitation excess, and with the precipitation excess as input, the finite-element technique was used to route overland and channel flow. The program was structured with sufficient flexibility so that the effect of land use changes, either gradual or sudden, on the runoff hydrograph could be estimated. Abstraction losses in the stream channel are accounted for. The simulation model predictions are compared with field data for several storms, and the comparisons are satisfactory; however, improvements could be made with additional data on antecedent moisture content and better estimates of abstraction losses. Based on these comparisons, it is felt that the model can be used to estimate runoff hydrographs from ungaged watersheds in semiarid regions.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Hydrology.; Hydrology -- Mathematical models.; Experimental watershed areas.; Watersheds -- Arizona.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Civil Engineering and Engineering Mechanics; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Contractor, Dinshaw N.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleApplication of a finite-element model to overland and channel flow in arid areasen_US
dc.creatorEl-Ansary, Amgad Saad El-Din.en_US
dc.contributor.authorEl-Ansary, Amgad Saad El-Din.en_US
dc.date.issued1984en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractA mathematical model to stimulate overland and channel flow using the finite element technique was adapted and applied to a small semiarid rangeland watershed (2035 acres) in the USDA Walnut Gulch experimental watershed in the southwestern United States. The Holtan equation was used to estimate precipitation excess, and with the precipitation excess as input, the finite-element technique was used to route overland and channel flow. The program was structured with sufficient flexibility so that the effect of land use changes, either gradual or sudden, on the runoff hydrograph could be estimated. Abstraction losses in the stream channel are accounted for. The simulation model predictions are compared with field data for several storms, and the comparisons are satisfactory; however, improvements could be made with additional data on antecedent moisture content and better estimates of abstraction losses. Based on these comparisons, it is felt that the model can be used to estimate runoff hydrographs from ungaged watersheds in semiarid regions.en_US
dc.description.notehydrology collectionen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshHydrology -- Mathematical models.en_US
dc.subject.lcshExperimental watershed areas.en_US
dc.subject.lcshWatersheds -- Arizona.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineCivil Engineering and Engineering Mechanicsen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairContractor, Dinshaw N.en_US
dc.identifier.oclc213097237en_US
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