López Soto, Jamie F.

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    Arced labyrinth weir geometric design for auxiliary spillway applications in existing dam infrastructure
    (2015) López Soto, Jamie F.; Molina Bas, Omar I.; College of Engineering; Wibowo, Johannes L.; Pagán Trinidad, Ismael; Department of Civil Engineering; Huérfano, Victor
    A new optimization scheme procedure for arced labyrinth weir design is proposed to be used in a spillway value analysis, for the design of auxiliary spillways. The arced labyrinth spillway geometric design based on an optimization-based program that integrates hydraulic performance from physical models and estimated cost. The optimization procedure compares expected hydraulic conditions and specific site considerations to over 45,000 solutions, and outputs a list of the 10 most economical arced labyrinth weirs. The most promising weirs’ geometric parameters, expected hydraulic behavior, and structure construction cost are tabulated, thus giving enough information to the designer about the expected arced labyrinth weir that could sustain the hydraulic conditions under a flood event. High performance designs are then compared to developed full-scale solutions and are compared based on an economic analysis. The geometric parameters are then subject to a sensitivity analysis to analyze a case study thus optimizing the design further for a specific case study discharge. Based on the sensitivity analysis, the trends of the most economic weirs are selected, and a specific set of geometrical parameters is selected as the trending design in which the economic and hydraulic conditions are optimized. Finally, a design optimization ratio was found to be a common denominator in the majority of the designs. The optimization ratio is based on a specific arc radius to the width.