Articles | Volume 18, issue 1
https://doi.org/10.5194/nhess-18-303-2018
https://doi.org/10.5194/nhess-18-303-2018
Research article
 | 
22 Jan 2018
Research article |  | 22 Jan 2018

Comparing thixotropic and Herschel–Bulkley parameterizations for continuum models of avalanches and subaqueous debris flows

Chan-Hoo Jeon and Ben R. Hodges

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Cited articles

Ancey, C.: Plasticity and geophysical flows: A review, J. Non-Newton. Fluid, 142, 4–35, 2007. a
Ancey, C. and Cochard, S.: The dam-break problem for Herschel-Bulkley viscoplastic fluids down steep flumes, J. Non-Newton. Fluid, 158, 18–35, 2009. a
Aziz, M., Towhata, I., Yamada, S., Qureshi, M. U., and Kawano, K.: Water-induced granular decomposition and its effects on geotechnical properties of crushed soft rocks, Nat. Hazards Earth Syst. Sci., 10, 1229–1238, https://doi.org/10.5194/nhess-10-1229-2010, 2010. a
Bagdassarov, N. and Pinkerton, H.: Transient phenomena in vesicular lava flows based on laboratory experiments with analogue materials, J. Volcanol. Geoth. Res., 132, 115–136, 2004. a
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This work shows that a multiphase flow solver using a multi-material level-set method with yield-stress models of non-Newtonian viscosity provides a means for numerical approximation of avalanches and subaqueous debris flows. This simulation approach was tested with both time-independent and time-dependent models of viscosity. Moreover, two different approaches were used to evaluate the Coussot parameters. Overall, the numerical results showed reasonable agreement with prior experimental data.
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