Collection of source code and data deliverables of MATHEGRAM ESRs
Numerical models for investigation of the fundamental mechanisms of heat generation and transfer in granular materials
Chemical reactions, by generating or consuming heat, affect the thermomechanical behaviour of granular materials. A DEM model incorporating a solid state model for a single reactant is developed. Reaction progression is modelled through alpha, extent of reaction.
Heat generation in biological material is mainly triggered by moisture content. A DEM model for swelling due to water absorption is developed.
At high temperatures, radiation becomes a dominant mode of heat transfer. A CFD-DEM model using P1 approximation for radiative heat exchange is developed.
Examples:
Particle properties can change significantly in relation to temperature. A DEM model for temperature-dependant heat capacity, and temperature-dependant thermal conductivity is implemented.
Strong heat exchange affects the fluid density. A CFD-DEM model for compressible fluid flow is developed.
Examples:
One-dimensional compressible flows can be assessed using a GNU Octave verification tool.
A FVM contact deformation model is developed for heat generation due to contact between solid particles.
Requires LIGGGHTS-PUBLIC 3.8.0 and CFDEMcoupling-PUBLIC 3.8.0. Details on installation are given on the "www.cfdem.com" website.
| Feature | Author |
|---|---|
| FVM deformation model | Ranjan Dhakal (ESR2) |
| DEM chemical reaction model | Aman Rastogi (ESR3) |
| DEM swelling model | Domenica Braile (ESR4) |
| DEM model with temperature dep. properties | Jelena Mačak (ESR5) |
| CFD-DEM thermal radiation model | Jelena Mačak (ESR5) |
| CFD-DEM model with non-constant density | Jelena Mačak (ESR5) |
Marie SKŁODOWSKA-CURIE Innovative Training Network MATHEGRAM, the People Programme (Marie SKŁODOWSKA-CURIE Actions) of the European Union's Horizon 2020 Programme H2020 under REA grant agreement No.813202.