News Archives - FEA, CFD and Explicit Dynamics


NUI Galway Students in Shell Eco-marathon Europe

NUI Galway Students compete with the best in Shell Eco-marathon Europe in London Olympic Park

The Galway  energy-efficient car (the Geec) is the most energy-efficient car ever built in Ireland. It has been developed by NUI Galway engineering students since 2013. The Geec 3.0 competed in Shell Eco-marathon Europe in London Olympic Park in May 2017.

SEM is race where the winner is not the fastest car, but the one that uses the least energy. This year’s track consisted of 10 laps over 15.7 km and included the same challenging 200-m, 4.3% slope hill-climb as last year.  Despite some tricky driving conditions, the team were quick to progress, surpassing last year’s score of 236 km/kWhr on the second run. Following a judicious change of motor and some late night re-engineering for weight reduction, we completed the final run with a huge jump in score to 354 km/kWhr (roughly equivalent to 10,500 miles per gallon of diesel). Our ranking jumped from 21st last year to 13th of 45 competitors this year. 

This project was created to give NUI Galway engineering students an opportunity to learn by throwing themselves into competitive, innovative technology development. The students rose to the challenge and proved that young Irish engineers can compete with the best in the world. They will continue to do so, with the Geec 4.0 already on the drawing board.

For the simulations for the Geec NUI Galway relied on CADFEM’s support and the ANSYS software

This success would not have been possible without the generous support of CADFEM over the last two years and the use of ANSYS software. CADFEM UK and Ireland provided software, training and support that enabled the team to optimise the car’s aerodynamics, drive weight without compromising the structure, and progress towards the goal of an all-carbon composite monocoque structure.

For more details, please visit: and

Simulation of Electric Machines

In early 2017, Motor Design Ltd (MDL) and CADFEM have announced their close partnership.

The two companies share a passion for Simulation Driven Product Development and a commitment to the notion that Simulation is More than Software. The combination of software [Motor-CAD and ANSYS] and expert services provided by MDL and CADFEM allow our customers to develop better machines in less time.

MDL is a world leader in developing advanced software and tools for designing electrical machines. Our software, Motor-CAD, is recognised worldwide as class-leading motor design software. We use our expert knowledge of designing electric motors to provide software support to electric machine designers at some of the most prestigious aerospace, automotive and industrial companies worldwide.

CADFEM is one of the largest European suppliers of Computer Aided Engineering (CAE) and is the ANSYS Channel Partner in several countries including the UK, Ireland, Germany, Austria, Switzerland, India. We are experts in simulation across all physics – mechanics, fluids, electromagnetics, systems… We sell and support the full ANSYS portfolio and help our customers to exploit the full benefits of simulation in their product development.

Motor-CAD can be used to quickly and easily perform electromagnetic and thermal performance tests on electric motor designs. ANSYS can be used to bring calculations of electromagnetic performance and cooling to the next level of accuracy and to predict and minimise noise and vibration.

We look forward to presenting to you how the two powerful tools can be integrated seamlessly within the ANSYS Workbench Environment.


Motor-CAD, key capabilities:

  • EMAG: a fast 2D finite element module for accurate electromagnetic and electrical performance predictions
  • THERMAL: Combines a lumped circuit and finite element thermal calculation for optimising the cooling system of a machine.
  • LAB:Provides efficiency mapping and duty cycle / drive cycle transient outputs within minutes 

ANSYS, key capabilities for motor design & development:

  • Vibration and Noise prediction using ANSYS Mechanical
  • Evaluation of Improved Cooling Concepts with ANSYS CFD
  • Detailed magnetic loss and performance calculations with ANSYS Maxwell

Integration of Motor-CAD and ANSYS

  • Motor Design Geometry
  • Integration with ANSYS Mechanical, CFD, Maxwell

Please contact us for more information and to discuss your requirements with our senior engineers. To fix an appointment, please contact Barbara Leichtenstern,

Please mark your diary for our Annual Conference where CADFEM’s and Motor Design’s experts will be presenting on:

Electric Drive Complete Solution 
Jens Otto (CADFEM GmbH, Germany) and Dr James Goss, Head of Technology (Motor Design Ltd, UK)
This presentation will outline an efficient electric motor simulation workflow combining the analysis tools from MDL with ANSYS advanced physics simulation to cover magnetic and thermal effects in machine design.

4th CADFEM ANSYS Simulation Conference – Ireland & UK, 12th & 13th October 2017
Venue: Engineers Ireland, Ballsbridge, Dublin 4
Check the announced presentations and book your place.





Rocky 4 Achieves Major Breakthrough in DEM Computational Speeds with First Ever Multi-GPU Solver Capabilities

The wait is over. With the fourth major release of its 3D Discrete Element Modeling (DEM) particle simulation software, Rocky 4 becomes the very first commercially available DEM solver to offer support for Multi-GPU Processing. This powerful, innovative, and highly-anticipated release aims to revolutionize processing performance and pave the way for solving bigger simulations faster than ever before. In addition, Rocky 4 brings many new and improved features that will help users perform more accurate and complex simulations, including a completely rebuilt Motion Kernel, and enhanced Fluent-Rocky Coupling. This feature-rich release promises to expand the boundaries of particle simulation. Discover all the highlights below.

Support for Multi-GPU Processing

With increase in demand for larger and more realistic DEM simulations, where there are tens of millions of particles, complex particle shapes, and large amounts of data to be handled, the use of multi-GPU technology becomes imperative for providing solutions to clients in a practical time frame to drive engineering design.

Rocky 4 is the first commercially produced DEM software to make multi-GPU technology a reality. Users can now model unit operations which were previously impossible to simulate using existing hardware due to limitations in solver technology that required huge amounts of memory. This latest release overcomes these limitations by including a solver that combines the computing power of GPUs and the available memory from their GPU boards. This enables not only faster simulation run times but also enables Rocky to handle practical cases that were previously impossible to tackle.

Preetanshu Pandey, Principal Scientist at Bristol-Myers Squibb, was recently able to test the new capabilities of Rocky 4 with his R&D team and says, “Introducing Rocky into our process was a big advancement. We were able to achieve a closer match to our experiments in terms of number of particles, largely because the Multi-GPU Processing capabilities included within Rocky 4 made the cases run faster.”

Dr. Alex Potapov, Rocky Chief Technology Officer, states that “Rocky 4 is a result of several years of R&D in algorithms to achieve maximum performance when using GPU processing. The result is an order of magnitude higher in terms of overall solver performance. When running Rocky 4 on multiple GPUs, the performance increase is incredible. But even when running only a single GPU and a multi-core CPU, Rocky 4 provides significant improvements. With this latest release, our customers are now able to perform simulations with multi-million particle amounts within the same time they were previously able to simulate only a few hundred thousand particles.”

Enhanced ANSYS Fluent-Rocky Coupling

Rocky 4 also includes improved support for two-way simulations between ANSYS Fluent and Rocky. One major improvement is the ability to handle Fluent’s Moving Meshes, on which the Fluent Mesh might be rotating or translating. This enables users to solve coupled Fluent-Rocky cases that involve moving parts/geometries, with both momentum and energy equations, either using the CPU or multi-GPU solvers.

New Integrated Motion Kernel

Having a Motion Kernel fully integrated into Rocky 4, with new support for combined motions, enables the definition of an even wider range of problems in a simple and intuitive way. Complex, linked motions are now possible directly within Rocky, which reduces the need for third-party multi-body dynamic simulators. Furthermore, the ability of having an on-the-fly preview of the motion behavior during setup increases productivity by minimizing setup mistakes.

New Data Storage Format

Rocky 4 brings a completely new data storage model, based on the HDF5 format, which is conceived to handle large amounts of data and to be future-ready for very large outputs. Users of Rocky 4 will see big benefits including smaller file sizes, quicker post-processing, and a more responsive user interface.

Improved Particle Modeling

Several features in Rocky 4 improve the ways in which particles are simulated and calculated. For example, this version brings an updated Particle Generation Scheme, which is capable of providing a continuous stream of particles into the system domain, allowing for better control of mass flow rate. A new Meshed Particle Type is also introduced, which allows for Flexible 3D Particles to be simulated. Increased control over how forces between contacts are calculated is provided by new Contact Models and their related features. In addition, the updated Particle Preview window provides better particle setup control, reducing user mistakes and allowing easy-to-obtain snapshot images for simulation reports.

Enhanced Post-Processing Features

Post-processing has also become easier than ever in Rocky 4. One advancement is the complete breakdown of Energy Spectra for all the combinations of particles-to-particles and particle-to-boundary contact types, enabling users to understand the energy spectra of both the desired and the non-desired collisions. In addition to unbroken particles, broken particle fragments are also considered as separate entities during post-processing, better ensuring that properties like mass flow and particle count are properly accounted.

Support for Linux

Additionally, with Rocky 4 it is possible to have full native support for Linux.

Dr. Rahul Bharadwaj, Vice President of Rocky Business Development and Technical Services, concludes: “We are proud that with this release of Rocky 4, our customers are now able to make DEM models much closer to reality than ever before.”

See—and Learn More!—about Rocky 4

Existing Rocky users can download Rocky 4 from the Customer Portal starting May 15th, 2017.

To see Rocky 4 in action, and to learn more about the features and enhancements available in this release, watch our webinar on May 17, 2017.  To register, click on the banner below.


ANSYS, Simulation, Software, FEM, CAE