Software

MESHFREE puts the process of virtualization during product development to the next level. Make sure to be part of the future!

MESHFREE  is a powerful simulation tool for

  • fluid dynamics
  • continuum mechanics
  • multiphase scenarios

using an innovative point cloud approach.

MESHFREE adapts efficiently to moving geometry elements such as stirrers of mixing devices or the movement of free surfaces. In conventional meshbased simulations such scenarios result in large overheads in computation time. A general continuum mechanics approach is the basis to model a vast variety of nonlinear physical phenomena like non-Newtonian fluids and complex materials. Hence, MESHFREE simulations can cover a wide range of applications, such as water management, avalanches, formation of foam, press-fit stem processes, sophisticated fluid-structure interactions and many more.

In contrast to classical mesh-based approaches, the physical quantities are computed on a point cloud instead of a mesh. The point cloud is managed fully automatically within MESHFREE and adapts itself to the simulation domain – even if the simulation domain changes rapidly due to moving geometries.

The unique features of MESHFREE make numerical simulation of scenarios possible that are currently completely out of reach for other simulation tools, e.g. simulating a water-crossing car or turbine abrasion.

Additionally, the computation in MESHFREE can be faster in scenarios that are difficult for mesh-based methods, such as free surface flows. The following table shows a comparison of the MESHFREE approach to mesh-based methods in certain aspects.

Meshfree Simulation: Turbine Abrasion
© Fraunhofer ITWM
Meshfree Simulation: Turbine Abrasion

Postprocessing Tool

In postprocessing, MESHFREE focuses on user friendliness as well. The powerful and flexible postprocessing unit extracts information from the raw simulation data so that the user can directly draw conclusions relevant to product design.

MESHFREE is not a static software. It is under continuous development by Fraunhofer’s expert developers to ensure its status as cutting edge software. The team adds new features and keeps the numerical methods up to date with the latest research results.

 

The Advantages of MESHFREE

  • MESHFREE is fully MPI parallelized and scales well on clusters (shared and distributed).
  • MESHFREE internally uses SAMG – a powerful library for solving the linear systems of equations based on algebraic multigrid technology.
  • MESHFREE is already in productive operation for a wide range of applications. A comprehensive scripting language allows for full flexibility in building new applications and fully automated workflows.
Aspect Mesh-based Method MESHFREE
Preparing a 3D Simulation 3D meshing. High quality mesh software needed Requires 2D surface mesh only. MESHFREE automatically fills the computation domain with the point cloud.
Free Surface Flows e.g Volume-of-fluid, computation of full domain In MESHFREE, only the part of the simulation domain that is filled with the fluid needs to be computed yielding a computational advantage.
Rapidly Moving Geometries Remeshing (potentially computational expensive)

The point cloud automatically adapts to the changing fluid domain. Full flexibility regarding changing topologies.

Local Refinement Remeshing (potentially computational expensive)

Also full flexibility for local refinement – even while you are computing the simulation with our computational steering feature!

Interpretation of Results

Postprocessing

The points of the point cloud move with the velocity of the fluid. This yields a very intuitive way to visualize and interpret the computational results.

Video: MESHFREE »Getting to the Points«

Steffen Hagmann from Porsche, one of the project partners, explains how they use the software in vehicle development. Our expert Isabel Michel and expert Jörg Kuhnert explain in which other areas MESHFREE is used.

 

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