TY - JOUR
T1 - Fuzzy multi-objective simulation-optimization of stepped spillways considering flood uncertainty
AU - Mooselu, Mehrdad Ghorbani
AU - Nikoo, Mohammad Reza
AU - Rayani, Nooshin Bakhtiari
AU - Izady, Azizallah
N1 - Publisher Copyright:
© 2019, Springer Nature B.V.
PY - 2019
Y1 - 2019
N2 - The design of stepped spillways is a multi-objective optimization problem in which the uncertainty of parameters plays a key role in the stepped spillways’ design. A Fuzzy Transformation Method (FTM), as a first attempt, was employed to address the uncertainty through a multi-objective optimization of the stepped spillway. The proposed methodology comprises two parts. A numerical model is developed by FLOW3D® and the Multi-Layer Perceptron artificial neural network (MLP-ANN) meta-model was trained and validated to substitute the numerical model. Then, the meta-model is coupled with a multi-objective optimization model to find the optimal design scenarios in each α-cut level. Finally, two multi-criteria decision-making (MCDM) models are applied to achieve the lower and upper bounds of optimum solutions. The application of proposed methodology in Jarreh dam, Iran, shows its capability in satisfying the objectives and also addressing the uncertainty in stepped spillways’ design.
AB - The design of stepped spillways is a multi-objective optimization problem in which the uncertainty of parameters plays a key role in the stepped spillways’ design. A Fuzzy Transformation Method (FTM), as a first attempt, was employed to address the uncertainty through a multi-objective optimization of the stepped spillway. The proposed methodology comprises two parts. A numerical model is developed by FLOW3D® and the Multi-Layer Perceptron artificial neural network (MLP-ANN) meta-model was trained and validated to substitute the numerical model. Then, the meta-model is coupled with a multi-objective optimization model to find the optimal design scenarios in each α-cut level. Finally, two multi-criteria decision-making (MCDM) models are applied to achieve the lower and upper bounds of optimum solutions. The application of proposed methodology in Jarreh dam, Iran, shows its capability in satisfying the objectives and also addressing the uncertainty in stepped spillways’ design.
KW - Fuzzy transformation method (FTM)
KW - Multi-criteria decision making
KW - Non-dominated sorting genetic algorithm II (NSGA-II)
KW - PROMETHEE
KW - Stepped spillway, TOPSIS
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U2 - 10.1007/s11269-019-02263-2
DO - 10.1007/s11269-019-02263-2
M3 - Article
SN - 0920-4741
VL - 33
SP - 2261
EP - 2275
JO - Water Resources Management
JF - Water Resources Management
IS - 7
ER -