RecurDyn offers the ability to analyze MFBD systems that interact with either granular (dry) particles or particle-based fluids. Granular solids, such as soil, sand or printer toner are modeled using RecurDyn/Particles which is based on the discrete element method (DEM). Fluid dynamics is available through co-simulation with the MPS-based CFD software of ParticleWorks. RecurDyn has an interface for ParticleWorks that makes co-simulation between them simple.

RecurDyn Particles

Modeling and analysis of solid particles such as dirt, gravel and sand using DEM (Discrete Element Method)bulldozer.PNG

  • Analysis considering the interaction between the MBD model of the mechanical system and the solid particles
  • From Particle creation and contact definition to analysis and animation within RecurDyn
  • Fast analysis of tens of thousands of particles using GPU computing
  • Mixing analysis of solid particles having different properties and sizes
  • Support for the moving path and number measurement of solid particles contour for contact force

What is ParticleWorks?
ParticleWorks is a computational Fluid Dynamics - CFD software package developed by Prometech Software, Inc. in Japan. It is based on the advanced  numerical method known as Moving Particle Semi-Implicit (MPS) method. In this method, the fluid is represented as a collection of particles. This allows ParticleWorks to simulate the movement of fluids precisely and stably. Furthermore, it allows ParticleWorks to simulate free surfaces, as well as the interaction between two different fluids, such as oil and water. The mesh-free nature of MPS allows for robust simulation of free-surface flows at high resolutions, saving the time need to generate meshes for the fluid domain. ParticleWorks provides direct file import form CAD software to reduce costs associated with mesh generation that is required for conventional CFD software. 

RecurDyn ParticleWorks Interface

RecurDyn has an interface specially designed for the co-simulation of dynamics of rigid bodies and fluids based on the MPS (Moving Particle Simulation) method.

  • Intuitive UI for easy modeling of co-simulation with ParticleWorksParticleWorks-Interface.PNG
  • Animation of fluid particle results analyzed in ParticleWorks can be shown with the RecurDyn models within RecurDyn
  • Visulizing the outer line of fluid particles in 2D profiles
  • Measuring the number of fluid particles in a specified area for each time interval
  • Fast analysis of fluids with millions of particles using GPU and HPC

RecurDyn X ParticleWorks Co-Simulation 


Reaction torque from lubrication oil on a single cylinder engine at various temperatures

  • Demonstrates the relation between the viscosity and reaction torque caused by the lubrication oil at various temperatures
  • Predicts the differences in deceleration at different lubrication oil viscosities caused by variation in temperatures

Fluid impact on the underbody of a vehicle when driving through a puddle

  • Simulates the fluid impact on the underbody of a vehicle
  • Shows the flow of the splashed water around parts accessible from the underside of the car, which is especially important for electric and hybrid carsCar.PNG


RecurDyn has an interface specially designed for co-simulation of dynamics of rigid bodies and fluids. RecurDyn is the world´s first 

commercial multibody dynamics software to offer such an interface. This interface allows you to simulate complicated fluid-solid interactions that were very difficult to simulate in the past. You can now simulate the coupled interaction between the two easily, so that the solid bodies and fluids affect each other´s behaviors.

Through the co-simulation with ParticleWorks, the analysis of the coupled interaction between a mechanical system and a fluid can be analyzed.
The streamlined co-simulation interface provides coupled MFBD-fluid simulation in a simple analysis environment.

Features of ParticleWorks
ParicleWorks allows you to analyze fluid behavior precisely and stably without mesh so taht the flow of liquid such as water or oil can be represented using the particles.
It is possible to analyze free surface problems having contacts between two fluids such as water and air or moving-boundary problems.
ParticleWorks also lets you analyze tens of thousands of particles and large scale analysis using GPU and compute-cluster hardware, making it ideal for the co-simulation with dynamic analysis and can further widen its scope through co-simulation with RecurDyn.

Key Features

  • Mesh-free CFD software based on particle method
  • Free surface flow, large deformations
  • Coupled simulation including fluid, powder and rigid body
  • Non-Newtonian flow
  • Surface tension models
  • Large Eddy Simulation
  • Heat transfer
  • Direct file import form CAD software
  • One single easy-to-use interface from CAD import to post-processing
  • Multi-core CPUs and GPUs
  • ParticleWorks shows competitive scalability from desktop PCs to large-scale servers
  • Working with 3rd party software

Benefits from ParticleWorks

  • Mesh-free particle method 
    Since the fluid is divided into a set of particles that are allowed to move freely, large deformation, coalescence and segmentation of fluid, and rapid change of flow are simulated without complicated preparation or meshing in advance. In particular the interaction of the free surface with moving boundaries/bodies can be easily set-up and simulated due to the fact that no mesh and no mesh deformation must be defined.
  • Easy-to-use interface 
    The integrated, easy-to-use interface of Particleworks enhances productivity throughout modeling, simulation and post-processing. Visualization of the progressive result can be done even when the simulation is running.
  • Flexible fluid-powder / fluid-rigid body integration 
    By coupling DEM (Discrete Element Method) and MPS, which will be applied to powder and fluid respectively, you can simulate the behavior of powder in fluid. Simulation of complex cases such as mixing, stirring and transportation phenomena including powder and fluid will be possible.
  • High-performance GPU computing 
    With optional GPU computing module, simulations can be run on NVIDIA CUDA-based GPUs. This dramatically reduces computation time, allowing low-end desktop PCs to perform simulation as fast as supercomputers or HPC servers
  • Coupled simulation with MultiBody Dynamics simulation software RecurDyn
    In addition to defining forced movement of solid bodies, more realistic fluid behavior is also realized by coupling ParticleWorks with RecurDyn.

RecurDyn & ParicleWorks Co-Simulation

  • Captures the effects of the motion of the mechanical system on the fluid
  • Captures the effects of fluid behavior on the mechanical system
  • The effect of the behavior of the mechanical system can be seen in the surfaces and turbulence of the fluid.



For a technical question please feel free to contact us. Our team will do its best to help you as fast as possible.

Phone: +49 (0)89-322-098-22
Mobile Phone: +49 (0)151-546-171-74


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Mon - Fri / 9:00AM - 6:00PM

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