Computation of water-surface profiles in open channels

1984 ◽  
Keyword(s):  
Water Surface ◽  
Open Channels ◽  
Surface Profiles

Nonunique Water‐Surface Profiles in Open Channels

1993 ◽  
Vol 119 (12) ◽  
pp. 1427-1434
Author(s):  
Subhash C. Jain
Keyword(s):  
Water Surface ◽  
Open Channels ◽  
Surface Profiles

Closure to “Nonunique Water-Surface Profiles in Open Channels” by Subhash C. Jain

1996 ◽  
Vol 122 (1) ◽  
pp. 51-51
Author(s):  
Subhash C. Jain
Keyword(s):  
Water Surface ◽  
Open Channels ◽  
Surface Profiles

Discussion of “Graphical Determination of Water-Surface Profiles”

1957 ◽  
Vol 83 (2) ◽  
Author(s):  
Vente Chow
Keyword(s):  
Water Surface ◽  
Surface Profiles

Discussion of “Water Surface Profiles in Irregular Natural Streams”

1962 ◽  
Vol 88 (1) ◽  
pp. 113-117
Author(s):  
R. M. Advani ◽  
Cornelius C. S. Shih ◽  
J. Kerr
Keyword(s):  
Water Surface ◽  
Natural Streams ◽  
Surface Profiles

scholarly journals Assessment of Artificial Intelligence Models for Estimating Lengths of Gradually Varied Flow Profiles

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Majid Niazkar ◽  
Farshad Hajizadeh mishi ◽  
Gökçen Eryılmaz Türkkan
Keyword(s):  
Artificial Intelligence ◽  
Water Surface ◽  
Direct Method ◽  
Step Method ◽  
Channel Networks ◽  
Intelligence Models ◽  
Artificial Intelligence Models ◽  
Surface Profiles ◽  
Artificial Neural Network Ann ◽  
Steep Slopes

The study of water surface profiles is beneficial to various applications in water resources management. In this study, two artificial intelligence (AI) models named the artificial neural network (ANN) and genetic programming (GP) were employed to estimate the length of six steady GVF profiles for the first time. The AI models were trained using a database consisting of 5154 dimensionless cases. A comparison was carried out to assess the performances of the AI techniques for estimating lengths of 330 GVF profiles in both mild and steep slopes in trapezoidal channels. The corresponding GVF lengths were also calculated by 1-step, 3-step, and 5-step direct step methods for comparison purposes. Based on six metrics used for the comparative analysis, GP and the ANN improve five out of six metrics computed by the 1-step direct step method for both mild and steep slopes. Moreover, GP enhanced GVF lengths estimated by the 3-step direct step method based on three out of six accuracy indices when the channel slope is higher and lower than the critical slope. Additionally, the performances of the AI techniques were also investigated depending on comparing the water depth of each case and the corresponding normal and critical grade lines. Furthermore, the results show that the more the number of subreaches considered in the direct method, the better the results will be achieved with the compensation of much more computational efforts. The achieved improvements can be used in further studies to improve modeling water surface profiles in channel networks and hydraulic structure designs.

Discussion of “Two Methods to Compute Water Surface Profiles”

1959 ◽  
Vol 85 (11) ◽  
pp. 137-140
Author(s):  
William C. Peterson
Keyword(s):  
Water Surface ◽  
Surface Profiles

Water Surface Profiles in Irregular Natural Streams

1961 ◽  
Vol 87 (4) ◽  
pp. 1-10
Author(s):  
P. A. Argyropoulos
Keyword(s):  
Water Surface ◽  
Natural Streams ◽  
Surface Profiles
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