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An improved DebrisInterMixingFoam for debris flow simulation: numerical investigation and application

Author

Listed:
  • Rui Li

    (Kunming University of Science and Technology)

  • Yuliang Teng

    (Kunming University of Science and Technology)

Abstract

A 3D debris flow model—DebrisInterMixingFoam—is studied. An improvement is proposed to update the VOF field in each outer iteration to eliminate the time step dependency of the simulation results. The improved model is validated by a debris flow deposition on slope plane case. The results show that the improved model can give accurate results with larger time step. Then, the improved model is applied to two benchmark debris flow cases and the simulation of a real debris flow event. In all cases, the model results are favorably compared with the experimental data or field investigation data. The numerical results show that the improved model can achieve good accuracy for debris flow simulation after well calibrations of these two key parameters. Although the mixture phase model has its limitations to simulate the debris flow with phase interactions, it is still an effective option for the engineering application as there are only two key parameters to be calibrated in DebrisInterMixingFoam so that it is easy to be used to model debris flow.

Suggested Citation

  • Rui Li & Yuliang Teng, 2022. "An improved DebrisInterMixingFoam for debris flow simulation: numerical investigation and application," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 113(3), pages 1925-1947, September.
    • Handle: RePEc:spr:nathaz:v:113:y:2022:i:3:d:10.1007_s11069-022-05376-x
    DOI: 10.1007/s11069-022-05376-x
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    References listed on IDEAS

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    1. Wei Wang & Guangqi Chen & Zheng Han & Suhua Zhou & Hong Zhang & Peideng Jing, 2016. "3D numerical simulation of debris-flow motion using SPH method incorporating non-Newtonian fluid behavior," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 81(3), pages 1981-1998, April.
    2. Pierre Jop & Yoël Forterre & Olivier Pouliquen, 2006. "A constitutive law for dense granular flows," Nature, Nature, vol. 441(7094), pages 727-730, June.
    3. Shiva P. Pudasaini & Michael Krautblatter, 2021. "The mechanics of landslide mobility with erosion," Nature Communications, Nature, vol. 12(1), pages 1-15, December.
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