Journal cover Journal topic
Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/gmd-2018-67
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Model description paper
12 Mar 2018
Review status
This discussion paper is a preprint. A revision of the manuscript is under review for the journal Geoscientific Model Development (GMD).
faSavageHutterFOAM 1.0: Depth-integrated simulation of dense snow avalanches on natural terrain with OpenFOAM
Matthias Rauter1,2, Andreas Kofler2, Andreas Huber3, and Wolfgang Fellin1 1University of Innsbruck, Institute of Infrastructure, Division of Geotechnical and Tunnel Engineering
2Department of Natural Hazards, Austrian Research Centre for Forests (BFW), Innsbruck, Austria
3University of Innsbruck, Institute of Infrastructure, Division of Hydraulic Engineering
Abstract. Numerical models for dense snow avalanches have become a central part in hazard zone mapping and mitigation. Several commercial and free applications, which are used on a regular basis, implement such models. In this study we present a tool based on the open-source toolkit OpenFOAM® as an alternative to the established solutions. The proposed tool implements a depth-integrated shallow flow model in accordance to current practice. The solver combines advantages of the extensive OpenFOAM infrastructure with popular models from the avalanche community. OpenFOAM allows assembling of custom physical models with build-in primitives and implements the numerical solution at a high level. OpenFOAM supports an extendable solver structure, making the tool well-suited for future developments and rapid prototyping. We introduce the basic solver, implementing an incompressible, single-phase model for natural terrain, including entrainment. The respective workflow, consisting of meshing, pre-processing, numerical solution and post-processing, is presented. We demonstrate data transfer from and to a geographic information system (GIS), to allow a simple application in practice. The tool-chain is based entirely on open-source applications and libraries and can be easily customized and extended. Simulation results for a well documented avalanche event are presented and compared to previous numerical studies and historical data.
Citation: Rauter, M., Kofler, A., Huber, A., and Fellin, W.: faSavageHutterFOAM 1.0: Depth-integrated simulation of dense snow avalanches on natural terrain with OpenFOAM, Geosci. Model Dev. Discuss., https://doi.org/10.5194/gmd-2018-67, in review, 2018.
Matthias Rauter et al.
Matthias Rauter et al.
Matthias Rauter et al.

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Short summary
We present a physical model for the simulation of dense snow avalanches and other gravitational mass flows. The model is solved with OpenFOAM, a popular open source toolkit for the numerical solution of partial differential equations. The solver has a modular design and is easy to extend. Therefore, it represents an ideal platform for implementing and testing new model approaches.
We present a physical model for the simulation of dense snow avalanches and other gravitational...
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