Nonsmooth simulations of 3D Drucker-Prager granular flows and validation against experimental column collapses

# About

This archive aims to reproduce the results of the article entitled: "***Nonsmooth simulations of 3D Drucker-Prager granular flows and validation against experimental column collapses***" *by Gauthier Rousseau, Thibaut Métivet, Hugo Rousseau, Gilles Daviet, and Florence Bertails-Descoubes*

## Contents

- The experimental data: raw videos, experimental information, velocity and profiles

- The `sand6py` code which is a fork of [Daviet PhD][1] `sand6` code including [diphasic feature][2] and other new features developed for the paper (collapses scenarios with frictional door, hysteresis, python binding with `pybind11`)

- Python scripts:

- for performing velocimetry measurements

- for running the `sand6` 3D simulations of granular column collapses

- for plotting paper figures

The git repository corresponding to `sand6py` is available on [https://gitlab.com/groussea/sand6py](https://gitlab.com/groussea/sand6py)

A maintained version of sand6 is available on [https://gitlab.inria.fr/elan-public-code/sand6](https://gitlab.inria.fr/elan-public-code/sand6)

## Figures

the figures of the article are reproducible from the python scripts in the `python/figurejfm` path

python dependencies are `matplotlib opencv jupyter vtk h5py tqdm scikit-image opyf`

You may obtain all the required dependencies in a convenient conda environment using the following command line in your terminal:

```shell

conda create --channel conda-forge -n sand6env python=3.9 matplotlib opencv jupyter vtk h5py tqdm scikit-image

conda activate sand6env

```

Corresponding e-mail: [e-mail]

[1]: tel.archives-ouvertes.fr/tel-01684673 "*Modeling and simulating complex materials subject to frictional contact: Application to fibrous and granular media*. Diss. Ph. D. Dissertation. Université Grenoble Alpes. , 2016"

[2]: https://hal.inria.fr/hal-01458951 "Simulation of Drucker–Prager granular flows inside Newtonian fluids"