The mass flow simulation tool


r.avaflow 2.3 User manual

by Martin Mergili


r.avaflow 2.3 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 2.3 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 2.3 is most easy to learn from videos.

Recent changes

r.avaflow 2.3 includes some substantial changes, compared to r.avaflow 2.0-2.2.


r.avaflow 2.3 runs on LINUX operating systems. It relies on GRASS 7 and R.


r.avaflow 2.3 can be easily installed through a script provided along with the software.


r.avaflow 2.3 is most efficiently operated through shell scripts.


r.avaflow 2.3 can be run with a minimum of input, but also with a combination of various parameters.


r.avaflow 2.3 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 2.3 User manual. https://www.avaflow.org/manual.php