IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) FULL PAPERS : THEME 4- WATER ENGINEERING : ESTIMATING DOWNSTREAM SCOUR OF THE GRADE-CONTROL STRUCTURE USING NONLINEAR REGRESSION AND GENETIC PR...
ESTIMATING DOWNSTREAM SCOUR OF THE GRADE-CONTROL STRUCTURE USING NONLINEAR REGRESSION AND GENETIC PROGRAMMING
Author : MASOUMEH FATTAHI , BABAK LASHKAR-ARA & MAHSA VALIPOUR
This paper describes nonlinear regression and genetic programming approachs for predicting scour downstream of grade control structures. dimensional analysis and nonlinear regression-based equations proposed for estimation of maximum scour depth, location of the scour hole, location and height of the dune downstream of the structures.In the second part, The GP-based formulation results are compared with experimental results and other accurate equations .The results analysis showed that the equations derived using Forward Stepwise nonlinear regression method have 2 correlation coefficient of R? 0.962 and 0.971 respectively for estimating the relative parameter of maximum scour depth ?sz? in comparison with the genetic programming model. Furthermore, the slope of the fitted line extracted from computations and observations for dimensionless parameters sz , XSz , hz , XDz using both model indicate the d superiority of nonlinear regression equations over genetic programming (GP) .
File Size : 689,329 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) FULL PAPERS
Article : THEME 4- WATER ENGINEERING
Date Published : 19/04/2016
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