News

DEMSLab 4.2 released on August 25, 2021.

• The contact model between particle (including sphere-based model, super-ellipsoid-based model, and polyhedron-based model) and wall is completely improved, and the computational stability is significantly improved.

• A new tool that can automatically fill particles according to the imported particle shape through STL file for multi-sphere model is added.

• The particle shape repair function is added for polyhedron model to ensure the smooth importing of convex polyhedron.

• CFD-DEM coupling supports CFD sliding grid and moving grid.

• CFD-DEM coupling supports gas-liquid-solid three-phase numerical simulation.

• Fluent-DEMSLab coupling UDF for multiphase flow based on the porous media model in ANSYS Fluent is added.

• The velocity interpolation algorithm in the fluid grid for CFD-DEM coupling is added to improve the simulation results.

• The particle generation algorithm in seeder is improved, and the efficiency are greatly improved (the efficiency is increased by at least 10 times).

• A ruler is added to the DEMSLab viewer.

• Verification and warning of 0 normal wall are added when reading STL files.

• The particle size modification function in User C is extended to polyhedral particles.

• The identification of whether the needed memory is too large when setting DEM mesh is added to avoid the situation of insufficient memory.

• The UDF fluent_demslab.c for Fluent-DEMSLab coupling was modified according to the standard C language to avoid errors when compiling with earlier version Microsoft Visual Studio.

• The calculation of torque in the coupling of DEMSLab and MSC Adams is corrected.

• A bug in the Surface Energy dialog box is fixed.

• A bug in calculating the normal direction when reading STL files is fixed.

• A bug in the seed define dialog boxes is fixed.

• A bug in seed display is fixed.

• A bug in Video Maker that confused the number of frames and files is fixed to avoid possible frame loss.

• The possible over contact problem between particles and walls in periodic boundary is solved.

• The possible problem in the seed display of super-ellipsoid particle is solved.

• Many other small bugs have been fixed.

• This version was released on August 25, 2021.