Validation of 2D shock capturing flood models around a surcharging manhole

Ricardo Martins, G. Kesserwani, M. Rubinato, Seungsoo Lee, Jorge Leandro, Slobodan Djordjević, J. D. Shucksmith

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)
28 Downloads (Pure)


This work offers a detailed validation of finite volume (FV) flood models in the case where horizontal floodplain flow is affected by sewer surcharge flow via a manhole. The FV numerical solution of the 2D shallow water equations is considered based on two approximate Riemann solvers, HLLC and Roe, on both quadrilateral structured and triangular unstructured mesh-types. The models are validated against a high resolution experimental data-set obtained using a physical model of a sewer system linked to a floodplain via a manhole. It was verified that the sensitivity of the models is inversely proportional to the surcharged flow/surface inflow ratio, and therefore requires more calibration from the user especially when concerned with localised modelling of sewer-to-floodplain flow. Our findings provide novel evidence that shock capturing FV-based flood models are applicable to simulate localised sewer-to-floodplain flow interaction.
Original languageEnglish
Pages (from-to)892-899
Number of pages8
JournalUrban Water Journal
Issue number9
Early online date20 Feb 2017
Publication statusPublished - 21 Oct 2017
Externally publishedYes

Bibliographical note

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution,
and reproduction in any medium, provided the original work is properly cited.


  • Floodplain flow
  • approximate Riemann solvers
  • dual drainage experiments
  • quadrilateral vs triangular meshes
  • sewer overflow
  • shallow water equations


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