Development of a multiscenario planning approach for urban drainage systems

Soon Ho Kwon, Donghwi Jung, Joong Hoon Kim

Research output: Contribution to journalArticle

Abstract

A traditional urban drainage system (UDS) planning approach generally considers the most probable future rainfall scenario. However, this single scenario (i.e., scenario-optimal) planning approach is prone to failure under recent climatic conditions, which involve increasing levels of uncertainty. To overcome this limitation, an alternative is to consider multiple scenarios simultaneously. Atwo-phase multi-scenario-basedUDSplanning approach was developed. Scenario-optimal solutions were determined for a set of scenarios in Phase I, as the traditional planning approach, while common elements across the scenarios were identified and used to consider components-wise regret cost concept for Phase II optimization, from which a compromise solution was sought. The storm water management model was dynamically linked with the harmony search algorithm for each phase optimization model. The proposed approach was demonstrated in the planning of the grid-type drainage networks of S-city. The compromise solution was compared with the scenario-optimal solutions (Phase I) with respect to cost effectiveness and system performance under scenarios that were not considered in the planning phase.

Original languageEnglish
Article number1834
JournalApplied Sciences (Switzerland)
Volume10
Issue number5
DOIs
Publication statusPublished - 2020 Mar 1

Keywords

  • Multi-scenario-based planning
  • Pipe installation and size design
  • Two-phase optimization
  • Urban drainage systems

ASJC Scopus subject areas

  • Materials Science(all)
  • Instrumentation
  • Engineering(all)
  • Process Chemistry and Technology
  • Computer Science Applications
  • Fluid Flow and Transfer Processes

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