Optimum design of sewer systems by using differential evolution algorithm

In this study, a solution approach which is based on the differential evolution (DE) optimization method is developed for optimum design of the sewer systems. In the developed approach, the slope of each pipe is used as the decision variable of the optimization model and the diameters are selected from the available diameters in market for minimizing the total system cost. All the physical and managerial constraints to be satisfied during the optimization process is included to the model by using the penalty function approach. The performance of the proposed approach is tested on two example systems and similar or better results are obtained compared to the obtained results given in literature. © 2020 Turkish Chamber of Civil Engineers. All rights reserved.