Open source programs and softwares-DEM-LBM


DEM: The Discrete Element Method is a powerful simulation scheme for soil, solid and fracture mechanics. Its fundamentals are simple, the body of study is divided in elements (could represent the individual grains in soils or pieces of solid in rocks) and Newton's laws are solve numerically to obtain their behaviour in time. Its popularity has grown in time since it reproduce naturally the elasto-plastic behaviour of soils and rocks and has many applications both in academy and industry. Mechsys DEM solver has the capability to deal with particles of general shape.


LBM: The Lattice Boltzmann Method was created to numerically solved the Boltzmann equation coming from statistical mechanics. It was shown that under some conditions it can also solve the Navier Stokes equations. Furthermore, it has proven to be a general Partial Differential Equation (PDE) solver. Mechsys has the traditional Navier Stokes solver module (LBM), a solver for Maxwell equations of electromagnetism (EMLBM) and the set of advection diffusion equations (ADLBM). As a novelty, Mechsys also couples DEM with LBM to have a powerful tool to simulate problems involving fluid and solid interaction.


MechSys—Open source programs(C++)

Palabos—Open source CFD solver based on the lattice Boltzmann method(C++)



DEM-LBM coupling technique


1. 2017, Y.T. Feng, LBM Hydraulic Fracturing, IJNME

2. 2010, Y.T. Feng&Owen, LBM-DEM coupling, IJNME

3. 2007, Y.T. Feng&Owen, LBM-DEM coupling, IJNME

4. Report: Coupled Discrete Element-Lattice Boltzmann Method and Application in Geomechanics and Rock Engineering

    Prof. Y.T. Feng at CUMTB, 20170718

5. 2013, Review of LBM-PFC,LBM-DEM coupling

6. 2016, DEM+LBM, Hydraulic Fracturing

7. Science in China E.suppl.65

8. 离散单元法及其在岩土力学中的应用

9. CDEM的计算原理及计算方法

10. GDEM V2.1应力分析系统使用手册

11. GDEM动力学专业版(V1.0)操作手册

12. 2016, Coupled BP and LBM, fluid–solid interaction, IJNAMG

13. Conference: Physical model, algorithm and application of particle discrete element method

    CUMTB, 20180115