The mass flow simulation tool


r.avaflow 2.4 User manual

by Martin Mergili


r.avaflow 2.4 represents a GIS-supported open source software tool for the simulation of complex, cascading mass flows over arbitrary topography. It empoys the NOC-TVD numerical scheme (Wang et al., 2004) along with a Voellmy-type model, with an enhanced version of the Pudasaini multi-phase flow model (Pudasaini and Mergili, 2019), or with a simple mass point model for the approximation of sliding processes. Complementary functions include entrainment, deposition, stopping, and phase transformations. The starting mass may be defined through raster maps and/or hydrographs. r.avaflow 2.4 includes the possibility to explore multi-core computing environments to run multiple simulations at once as a basis for parameter sensitivity analysis and optimization.

Tutorial videos

r.avaflow 2.4 is most easy to learn from videos.

Recent changes

r.avaflow 2.4 includes some substantial changes, compared to r.avaflow 2.0-2.3.


r.avaflow 2.4 runs on LINUX operating systems. It relies on GRASS 7 and R.


r.avaflow 2.4 can be easily installed through the command g.extension.


r.avaflow 2.4 is most efficiently operated through shell scripts.


r.avaflow 2.4 can be run with a minimum of input, but also with a combination of various parameters.


r.avaflow 2.4 automatically creates maps, diagrams and animations, and offers interfaces for export.

Please cite this site and its content as: Mergili, M., 2014-2020. r.avaflow - The mass flow simulation tool. r.avaflow 2.4 User manual. https://www.avaflow.org/manual.php