ESSS Rocky DEM 2022 R2.0 (22.2.0)

ESSS announces Rocky 2022R2, the new release of its best-in-class multiphysics particle simulation software. This version delivers new SPH-DEM functionality and offers new capabilities and enhancements to further improve usability and performance.

The official release of the native Smoothed Particles Hydrodynamic SPH-DEM coupled solver kernel offers solutions for industrial applications involving slurries and other types of solid-liquid free-surface flows. The solver can also take into account heat transfer exchange between fluids, particles, and boundaries and is native to both multi-GPUs and multi-CPUs.

For simulation of complex concave particles, 2022R2 extends the unique capabilities of the Particle Assembly model to create a single particle from combination of multiple particles with different material properties. Each sub-particle can have its own shape and its own stiffness, friction, heat conductivity, etc. This functionality enables simulation of many discrete parts for manufacturing. For example, many electrical component assemblies are made of different materials, such as plastic, rubber, and metal and they can be modeled in a real way with Rocky.


Combine multiple parts with different material properties to form a single particle using Rocky’s Particle Assembly functionality.

The new release also further improves simulation workflow while maintaining flexibility for post-processing of applications involving complex motion frames. New setup options eliminate the need for scripting used in previous versions and can be done with a just few clicks. As an example, post-processing entities can be linked to motion frames, making it easier than ever to extract data while following geometries or particles, even for complex movements.

For coupled CFD-DEM simulations, Rocky 2022R2 allows the CFD solver (Ansys Fluent) to dynamically refine and/or coarsen the mesh based on geometric and numerical solution data. The solution-adaptive mesh refinement speeds calculations while providing accurate results with adequate grid resolution.



Rocky DEM is a powerful, 3D discrete element modeling (DEM) program that quickly and accurately simulates particle behavior within a conveyor chute, mill, or other materials handling system. Rocky analyzes media flow patterns and energy absorption rates, particle breakage, and energy spectra analysis. The software optimizes life expectancy of conveyor belts and components, minimizes material spillage in a design, and reduces the need for dust control and suppression, among numerous other applications. This software is a revolutionary way to handle a problem through computer simulation.

With ROCKY for ANSYS particle simulation can be extended with important structural and flow-mechanical information. These are achieved by a complete integration in ANSYS Workbench. The compact and user-friendly user interface of ROCKY for ANSYS ensures uncomplicated installation and operation. CAD geometries can also be imported easily and quickly.

The 2022R2 brings a range of new functionalities and performance improvements. The release of the SPH-DEM native solver is the latest installment of the market-leading technologies that make Rocky a new platform for modeling wide range multiphysics discrete solid mechanics problems beyond traditional DEM applications.

Extend your multiphysics simulations with Rocky DEM and Ansys integration


Rocky DEM and Ansys integration lets you analyze complex problems from a new perspective: particle dynamics coupled with the Ansys multiphysics simulation solution.
Engineering Simulation and Scientific Software (ESSS) is an innovative international provider of engineering simulation products and services operating in more than 10 countries. With over twenty-five years of experience and over 200 employees, ESSS is a well-established Ansys channel partner. In addition, ESSS develops new simulation tools, runs the ESSS institute, and drives broader adoption of customized CAE solutions in the energy industry.

Product: ESSS Rocky DEM
Version: 2022 R2.0 (22.2.0)
Supported Architectures: x64
Website Home Page : https://rocky.esss.co/
Languages Supported: english
System Requirements: Windows or Linux *
Size: 1.8 Gb