This project provides two examples on how to deploy ANN models trained using Keras in C++ based OpenFOAM and CFDEM
The two examples represent two approaches to simulate gas-particle flows:
- Euler-Euler approach
- Euler-Languange approach
Euler-Euler approach treates two phases as interpenetrating continua, and we use twoPhaseEulerFOAM solver in OpenFOAM-3.x for this simulation.
Euler-Language approach solves the continuous phase on eulerian grids and tracks each particle and solve their behavior using Newtons equations of motion, and we use CFDEM for this simulation.
Large scale simulations requires coarse mesh grid, which needs sub-grid drag models. Detailed discussions can be found in https://www.sciencedirect.com/science/article/pii/S0032591018310192 We developed sub-grid drag models using Keras, and then deployed them into the simulation platforms.
- WenYuDriftFlux is located in
/OpenFOAM-3.0.1/applications/solvers/multiphase/twoPhaseEulerFoamPU/interfacialModels/dragModels/ - WenYuANNDrag is located in
CFDEM/CFDEMcoupling-PUBLIC-5.x/src/lagrangian/cfdemParticle/subModels/forceModel/
The deployment is based on keras2cpp (https://github.com/pplonski/keras2cpp).