ESSS Rocky DEM 4.2.0 (x64) | 313.4 mb
The ESSS product team (part of CADFEM) is pleased to announce the availability of Rocky DEM 4.20. The latest version of Rocky DEM high-fidelity particulate software adds to and deepens modeling capabilities, including particle collision analysis, spring and damper motion, fiber modeling improvements, and ANSYS Workbench integrated fluid-particle simulation.

Rocky DEM 4.20 - what's new:

Intra-Particle Collision Statistics
Rocky DEM 4.2 predicts how collisions happen within a particle, adding more value to its collision energy spectra. Statistical information like duration, impact and shear allow designers to accurately estimate particle abrasion, edge chipping and damage - as well as how collisions affect the system.

Spring and Damper Motions
Rocky's motion body dynamics kernel incorporates spring and damper motion capabilities that enable broader simulation while simplifying configuration and post-processing. Users no longer need to couple with external motion-body dynamic software to simulate complete models like passive valves and gates, independent multi-wheel suspensions, damped actuators, and pre-tensioned systems.

This storage silo application shows typical simulation results when using Rocky DEM's Spring and Damper Motions for valve opening.

Expanded ANSYS Workbench Integration
Rocky 4.2 offers more-robust Workbench integration when coupling with ANSYS Fluent. The project schematic shows on-the-fly simulation progress updates and robust multiple design-point projects, including CFD to DEM. The seamless ANSYS SpaceClaim-Rocky geometry-unit handling enables simulations on different scales inside the same project schematic.

Improvements to Fiber Particles
The release expands the modeling range of real fibers and particles, and it further improves simulation speed. A new search algorithm speeds up packed-fiber system simulation by an average of two times, along with the ability to configure different elastic ratios for each fiber segment.

Other Enhancements
The new release incorporates a number of other critical enhancements. For fluid-particle-thermal setups, Solid and Porous Media Domains provide tight coupling so particles move through and between multiple fluid domains when coupling with ANSYS Fluent. CFD Mesh Decomposition on multi-GPU ensures that the run is executed in parallel through a domain decomposition approach based on CFD mesh cells. Context Save/Restore functionality in Rocky 4.2 eliminates the customization needed to compare differences in multiple simulations. The new Particle Generation Preview provides immediate feedback of estimated number of particles to be released into the system, based on setup parameters. And Custom Output Control optimizes disk I/O and minimizes data storage issues so users can independently configure output frequency from simulation summary curves and particle results.

ROCKY DEM allows precise prediction of the particle behavior of granular and liquid systems by analyzing media flows, energy absorption rates and particle breakage. Wherever large quantities of particles and bodies are set into motion in bulk, mixing, slipping or flow processes regardless of their size, shape, material or adhesion, ROCKY can help to understand and improve the processes.

These are, on the one hand, measures for optimizing the movement of the mass, for example to minimize material losses or to prevent or suppress dust formation. On the other hand, the results provide important information for efficiently designing peripheral products, for example to increase the service life of conveyor belts and other components.

ROCKY DEM optimizes, among other things, agitator mills, SAG mills, crushers and high-pressure grinding rollers, the particle spectrum ranges from small synthetic parts such as tablets to gravel.

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.

Rocky DEM provides decisive insight into granular flow behavior with accurate particle representation.

ESSS. the largest engineering company in South America specializing in numerical simulations, ANSYS ELITE Channel Partner and TechNet Alliance member, joined CADFEM closely.

Product: Rocky DEM
Version: 4.20
Supported Architectures: x64
Website Home Page :
Language: english
System Requirements: PC *
Supported Operating Systems: *
Size: 313.4 mb

Please see below for minimum system requirements and optional recommendations.

- 64-bit Windows 7; 64-bit Windows 10
- A video card that supports OpenGL graphics
- 4 GB of free disk space
- 4 GB of RAM
- Two-button mouse with center wheel
- Screen resolution of 1280 x 1024
- 8 GB of free disk space
- 8 GB of RAM
- Quad-core or better processor (Intel Core i5, Intel Core i7, or Intel Xeon processor)
- ANSYS SpaceClaim or other CAD software
- Microsoft Excel or other spreadsheet software
- AVI-compatible media player
Additional Requirements for GPU or Multi-GPU Processing
An NVIDIA GPU card (computing or gaming) with at least 4 GB memory and fast double-precision processing capabilities. (Required: The card must have a CUDA compute capability of 2.0 or higher.)
Additional requirements for CFD coupling
You can use Rocky coupled with the following ANSYS Software versions:
- ANSYS versions 18.1 to 19.2

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