A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
OPTIMAL DESIGN OF OPEN CHANNEL SECTION CONSIDERING FREEBOARD
A nonlinear optimization model is presented for designing optimal channel section incorporating free board as an additional decision variable. The freeboard of a channel is provided to prevent waves or fluctuation in water surface from overflowing the sides. Wave action or water surface fluctuation may be created by many uncontrolled causes. In this study, freeboard is calculated to prevent fluctuation due to the change in specific energy of the channel. A factor of safety is incorporated to take an account of other causes of water surface fluctuation. The objective of the optimization model is to minimize total construction costs of the channel. Manning's equation is used to specify uniform flow condition in the channel. The developed optimization model is solved by Sequential Quadratic Programming using MATLAB. Applicability of the developed model is demonstrated for a trapezoidal channel section with composite roughness. Equivalent roughness coefficient for the composite section is calculated using Horton's formula. The solutions of the developed model are compared with previously published solution and are found to be comparable.
OPTIMAL DESIGN OF OPEN CHANNEL SECTION CONSIDERING FREEBOARD
A nonlinear optimization model is presented for designing optimal channel section incorporating free board as an additional decision variable. The freeboard of a channel is provided to prevent waves or fluctuation in water surface from overflowing the sides. Wave action or water surface fluctuation may be created by many uncontrolled causes. In this study, freeboard is calculated to prevent fluctuation due to the change in specific energy of the channel. A factor of safety is incorporated to take an account of other causes of water surface fluctuation. The objective of the optimization model is to minimize total construction costs of the channel. Manning's equation is used to specify uniform flow condition in the channel. The developed optimization model is solved by Sequential Quadratic Programming using MATLAB. Applicability of the developed model is demonstrated for a trapezoidal channel section with composite roughness. Equivalent roughness coefficient for the composite section is calculated using Horton's formula. The solutions of the developed model are compared with previously published solution and are found to be comparable.
OPTIMAL DESIGN OF OPEN CHANNEL SECTION CONSIDERING FREEBOARD
Bhattacharjya, Rajib Kumar (author)
ISH Journal of Hydraulic Engineering ; 11 ; 141-151
2005-01-01
11 pages
Article (Journal)
Electronic Resource
Unknown
| British Library Online Contents | 2008
Freeboard for water-impounding structures
| Engineering Index Backfile | 1936