The mass flow simulation tool


r.avaflow 2.2 User manual

by Martin Mergili


r.avaflow 2.2 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, or particularly with the Pudasaini multi-phase flow model (Pudasaini and Mergili, 2019) with complementary empirical functions for entrainment and phase transformations. The starting mass may be defined through raster maps and/or hydrographs. r.avaflow 2.2 includes the possibility to explore multi-core computing environments to run multiple simulations at once as a basis for parameter sensitivity analysis and optimization.

Recent changes

r.avaflow 2.2 includes some substantial changes, compared to r.avaflow 2.0 and 2.1.


r.avaflow 2.2 runs on LINUX operating systems. It relies on GRASS 7 and R.


r.avaflow 2.2 can be easily installed through a script provided along with the software.


r.avaflow 2.2 is most efficiently operated through shell scripts.


r.avaflow 2.2 can be run with a minimum of input, but also with a combination of various parameters.


r.avaflow 2.2 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 2.2 User manual. https://www.avaflow.org/manual.php