Conference Agenda
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Daily Overview |
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SES 3-3-3: Combat Location: HSB2 Session Chair: Martin Oberascher Session Chair: Robert Sitzenfrei | |
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2:45pm - 2:57pm
An engineering-led approach to multi-criteria NBS placement 1: Centre for water Systems, University of Exeter, Exeter, UK; 2: School of Civil Engineering, University of Tehran, Tehran, Iran; 3: Engineering Systems, Pennsylvania State University, PA, USA This method seeks a local optimum solution for retrofitting the urban drainage network under computational constraints. The simplifications used in this method are clustering sub-catchments into 2 major classes based on their distance to the WWTP and considering the two largest rain events for the simulation to reduce the computational effort. Moreover, for fulfilling the objective of the least manhole flooding, the junctions with the most surcharge are considered. A weighting decision-making approach is applied within each cluster and the seven NBSs are considered as the options to be weighted by the team members. The characteristics of the NBSs plus the imperviousness and slope of the sub-catchments are used in choosing the right NBS for each sub-catchment in each cluster. After selecting the possible NBSs for each cluster, multiple simulations are conducted and the results act as the training dataset of a data-driven model, which takes the 7 NBS options as inputs and predict the objectives (Cost, Biodiversity, etc.) as outputs of the model. The trained model generates additional samples, and the results can be put in an evaluation framework like a Pareto front or the TOPSIS analysis to find the optimal solution. | |