Abstract This paper proposes a versatile open channel cross-section (or simply section) with General Elliptic (GE) sides and horizontal bottom. The GE section includes four parameters that provide more degrees of freedom to accommodate multiple physical constraints and produce better optimal solutions. The proposed section provides as special cases numerous sections such as elliptic, circular, triangular, trapezoidal, and rectangular. The dimensions of GE section that minimize construction cost of excavation and composite linings are determined using mathematical optimization. Constraints on channel discharge and geometry (e.g. flow depth, top width, and side slope) are included. The model was validated and its performance was compared with other known sections. The results show that the GE section improves construction cost by up to 10%–12% compared with the ordinary elliptic section which has been recently shown to outperform most known open channel sections.
Versatile general elliptic open channel cross section
KSCE Journal of Civil Engineering ; 20 , 4 ; 1572-1581
2015-08-31
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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