Particleworks

iGRAF is an integrated powder and multiphase flow simulation tool that seamlessly merges the domains of powder and fluid simulation. It is designed as a one-stop solution for replicating a wide variety of powder behaviors and redefining standards in simulation technology. iGRAF’s integrated DEM-CFD solver enables accurate and efficient analysis of single-phase and multiphase flow, helping users understand particle-fluid interactions in one platform. Its dynamic geometry control supports translations, rotations, vibrations, and user-defined motion, allowing teams to precisely capture the dynamics of complex systems. It includes validated liquid bridging models and van der Waals forces to analyze the influence of moisture and adhesion on particle behavior, with its liquid bridge force model extensively validated up to 15% moisture content. iGRAF also combines the Signed Distance Function and Immersed Boundary Method to recognize arbitrary solid geometries.

Yade is an extensible open source framework for discrete numerical models, focused on the Discrete Element Method. Its computation parts are written in C++ using a flexible object model that allows independent implementation of new algorithms and interfaces, while Python is used for rapid and concise scene construction, simulation control, postprocessing, and debugging. Yade is designed for researchers and engineers who need to create, run, inspect, modify, and extend particle-based simulations through scripts, interactive commands, graphical tools, and reusable simulation components. Simulations can be built from specialized generators or constructed directly with Python scripts, giving users flexibility for developing custom models, importing geometries, reusing code, and controlling the full simulation loop. It represents each simulation as a scene containing bodies, interactions, and resultant forces, with bodies defined by geometry, material properties, state variables, etc.