Smoothed particle hydrodynamics - Discrete element method solver in PySPH

The current source code is developed as part of EPSRC project at the University of Surrey. Within the current project we study the particle dispersion, particle swelling due to influx of water, as well as agglomeration.

The fluid is modeled using weakly compressible SPH approach, which the solid particles using DEM. The coupling is handled using a ghost particle approach.

Dependencies

sph_dem has the following dependencies:

Dependency	Version	Required	Details
Python	3.9+	Yes	python
PySPH	Latest	Yes	Particle based software

Obtaining SPH_DEM

Clone the master branch:

git clone https://github.com/dineshadepu/sph_dem.git

Build and install

CPU Build

After install pysph:

python setup.py develop

Features

sph_dem currently includes the following:

• DEM implementation for solid particles
• WCSPH for fluid phenomena
• SPH-DEM coupling for particle dispersion (solid-fluid coupling)
• Particle swelling due to water influx
• CPU, OpenMP support

Examples

Once built and installed, sph_dem examples/ can be run. Several examples are written in the package, few animations are as follows:

Solid particles mixing in stirring tanks

Swelling of solid particles due to water absorption

References

[1] Chung, Y. C., and J. Y. Ooi. "Benchmark tests for verifying discrete element modelling codes at particle impact level." Granular Matter 13.5 (2011): 643-656.

Contributing

We encourage you to contribute to sph_dem! Please check the guidelines on how to do so.