Ansys Rocky 2026 R1 Advances DEM Simulation with Enhanced Multiphysics and GPU Scalability
Overview
Ansys has released Rocky 2026 R1, the latest version of its particle dynamics simulation software, introducing significant enhancements to Discrete Element Method (DEM) capabilities, expanded multiphysics coupling, and performance improvements. This release targets engineers working in pharmaceutical, chemical processing, battery manufacturing, and granular material modeling industries.
New DEM Simulation Capabilities
Mixing Index Calculator
The 2026 R1 release introduces an automated Mixing Index Calculator that quantifies powder mixing quality in DEM simulations. This tool addresses a critical need in pharmaceutical, chemical, food processing, and granular material industries where mixing uniformity directly impacts product quality and regulatory compliance. Engineers can now objectively assess mixing performance without manual post-processing analysis.
Intermolecular Forces and Free Surface Modules
Rocky 2026 R1 adds support for intermolecular forces and a 1-Way Free Surface module, enabling simulations where particle behavior is influenced by surrounding fluids without explicitly modeling the fluid phase. This capability is particularly valuable for battery manufacturing processes, where understanding particle-fluid interactions is essential for optimizing electrode coating and slurry processing operations.
Enhanced Multiphysics Coupling
GPU-Accelerated Fluent Integration
The release expands coupling between Rocky and Ansys Fluent with 1-Way Fluent GPU-Rocky support. This integration allows the high-performance GPU solver in Fluent to transfer flow-field information to Rocky for particle simulations, significantly accelerating coupled CFD-DEM workflows for applications involving particle-laden flows.
Buoyancy Force in SPH Simulations
Natural convection can now be modeled in Smoothed Particle Hydrodynamics (SPH) simulations using a buoyancy formulation based on fluid thermal expansion coefficients. This enhancement enables more accurate prediction of natural convection phenomena and wall heat transfer rates in thermal-fluid systems.
Torque Law for Rotational Effects
A new torque law has been introduced in the Rocky UI for 1-Way Constant coupling, allowing engineers to model rotational effects and torque-driven particle motion. This feature expands the range of applications for coupled simulations involving rotating equipment and machinery.
Performance and Scalability Improvements
Distributed Parallel Computing (Beta)
Rocky 2026 R1 introduces distributed parallel computing capabilities in beta, enabling simulations to run across multiple GPUs on different nodes. This advancement significantly increases scalability for large particle counts, allowing engineers to tackle previously intractable problems involving millions or billions of particles.
Optimized Volumetric Generation
The release includes optimization of volumetric generation algorithms, accelerating the initialization stage for both DEM and SPH elements. This improvement enhances performance for simulations involving large particle injections and filling operations, reducing overall simulation setup time.
Enhanced Automation
PrePost scripting improvements now allow programmatic definition of particle inlets, enhancing automation of model setup. This capability streamlines workflow for parametric studies and reduces manual effort in repetitive simulation tasks.
AI-Powered Assistance
Rocky 2026 R1 integrates the Ansys Engineering Copilot, an AI-powered assistant that helps users find technical information and learn from the Ansys knowledge ecosystem. The copilot provides access to knowledge base articles, community forums, and technical documentation directly within the Rocky interface, accelerating the learning curve for new users and improving productivity for experienced engineers.
Industry Applications
The enhancements in Rocky 2026 R1 address specific needs across multiple industries:
- Pharmaceutical: Mixing Index Calculator for tablet formulation and powder blending validation
- Battery Manufacturing: Intermolecular forces and free surface modules for electrode coating processes
- Chemical Processing: Enhanced multiphysics coupling for reactor design and particle handling systems
- Mining and Minerals: Distributed parallel computing for large-scale material handling simulations
- Food Processing: Mixing quality assessment and thermal processing simulations
Availability
Ansys Rocky 2026 R1 is available as part of the Ansys 2026 R1 release. More information can be found on the Ansys Innovation Space.