Issue link: https://resources.randsim.com/i/1543873
©2026 ANSYS, Inc. 7 Intermolecular Forces and 1-Way Free Surface New ready-to-use modules available • The Intermolecular Forces module allows you to include van der Waals and/or steric repulsive force in the particle-particle interaction • The 1-Way Free Surface module allows you to incorporate free-surface physics for liquids within a simplified DEM framework • It works by tracking the fluid level and applying fluid-related forces (capillary, buoyancy and stokes) to particles Fixed Free Surface Moving Free Surface Note: The fluid is fictitious, and it is not direct modeled. This is good (performance optimization) when user is mostly interested in the effect of the fluid over the DEM.