Friction-term response to boundary-condition type in flow models
Journal of Hydraulic Engineering
By: R.W. Schaffranek and C. Lai
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Abstract
The friction-slope term in the unsteady open-channel flow equations is examined using two numerical models based on different formulations of the governing equations and employing different solution methods. The purposes of the study are to analyze, evaluate, and demonstrate the behavior of the term in a set of controlled numerical experiments using varied types and combinations of boundary conditions. Results of numerical experiments illustrate that a given model can respond inconsistently for the identical resistance-coefficient value under different types and combinations of boundary conditions. Findings also demonstrate that two models employing different dependent variables and solution methods can respond similarly for the identical resistance-coefficient value under similar types and combinations of boundary conditions. Discussion of qualitative considerations and quantitative experimental results provides insight into the proper treatment, evaluation, and significance of the friction-slope term, thereby offering practical guidelines for model implementation and calibration.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Friction-term response to boundary-condition type in flow models |
| Series title | Journal of Hydraulic Engineering |
| Volume | 122 |
| Issue | 2 |
| Year Published | 1996 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Hydraulic Engineering |
| First page | 73 |
| Last page | 81 |
| Google Analytic Metrics | Metrics page |