Flowy - A code to simulate lava emplacement.

About

Flowy is a probabilistic code to simulate the emplacement of lava. It is a re-implementation of the Mr. Lava Loba method [1,2] in C++20.

Installation of dependencies with micromamba

To install micromamba, execute

"${SHELL}" <(curl -L micro.mamba.pm/install.sh)

For details, refer to the micromamba docs here.

Then, create and activate the environment.

micromamba create -f environment.yml
micromamba activate flowyenv

Compilation and Installation

We use meson to compile and build flowy.

meson setup build
meson compile -C build

To install flowy to your conda environment, run the following:

meson setup build --prefix $CONDA_PREFIX
meson install -C build

Benchmark

Both codes were run on the examples and the runtime was averaged over 10 runs. Flowy is about 100 times faster on the Kilauea example and about 50 times faster on the Mt. Etna example.

Runtime in seconds

	Etna	Kilauea
Flowy	$13.343 \pm 0.1$ s	$0.779 \pm 0.1$ s
Mr. Lava Loba	$686.330 \pm 3.3$ s	$81.989 \pm 2.1$ s

Gallery

Mt Etna 2001 LFS1 flow field

Kilauea 2014-2015 flow field

References

[1] Mattia de' Michieli Vitturi, Simone Tarquini, "MrLavaLoba: A new probabilistic model for the simulation of lava flows as a settling process" Journal of Volcanology and Geothermal Research, 2018.

[2] https://github.com/demichie/MrLavaLoba