Comparison between FLO-2D and Debris-2D on the application of assessment of granular debris flow hazards with case study

Ying Hsin Wu, Ko Fei Liu, Yi Chin Chen

Research output: Contribution to journalArticle

32 Citations (Scopus)


Numerical simulation has been widely applied to the assessment of debris flow hazards. In East Asia and especially Taiwan, the most widely used numerical programs are FLO-2D and Debris-2D. Although these two programs are applied to the same engineering tasks, they are different in many aspects. These two programs were compared according to their fundamental theories, input and output data, computational algorithms and results. Using both programs, the simulations of a real debris flow with abundant granular material induced by landslides at Xinfa village in southern Taiwan are performed for comparison. The simulation results show that Debris-2D gives better assessment in hazard area delineating and flow depth predicting. Therefore, Debris-2D is better for simulation of granular debris flows.

Original languageEnglish
Pages (from-to)293-304
Number of pages12
JournalJournal of Mountain Science
Issue number2
Publication statusPublished - 2013 Apr 15


All Science Journal Classification (ASJC) codes

  • Global and Planetary Change
  • Geography, Planning and Development
  • Geology
  • Earth-Surface Processes
  • Nature and Landscape Conservation

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