Calculating dense-snow avalanche runout using a Voellmy-fluid model with active/passive longitudinal straining
نویسندگان
چکیده
منابع مشابه
Collapse dynamics and runout of dense granular materials in a fluid.
We investigate the effect of an ambient fluid on the dynamics of collapse and spread of a granular column simulated by means of the contact dynamics method interfaced with computational fluid dynamics. The runout distance is found to increase as a power law with the aspect ratio of the column, and, surprisingly, for a given aspect ratio and packing fraction, it may be similar in the grain-inert...
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Geophysical mass flows--debris flows, avalanches, landslides--can contain O(10(6)-10(10)) m(3) or more of material, often a mixture of soil and rocks with a significant quantity of interstitial fluid. These flows can be tens of meters in depth and hundreds of meters in length. The range of scales and the rheology of this mixture presents significant modelling and computational challenges. This ...
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Two-dimensional avalanche simulation software operating in three-dimensional terrain is widely used for hazard zoning and engineering to predict runout distances and impact pressures of snow avalanche events. Mountain forests are an effective biological protection measure against avalanches; however, the protective capacity of forests to decelerate or even to stop avalanches that start within f...
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ژورنال
عنوان ژورنال: Journal of Glaciology
سال: 1999
ISSN: 0022-1430,1727-5652
DOI: 10.1017/s002214300000174x