Precise Simulation Adds Fluid-Structure Interaction Solver to FEATool Multiphysics v1.11

Precise Simulation Adds Fluid-Structure Interaction Solver to FEATool Multiphysics v1.11
0 comments, 24/07/2019, by , in CAE, News

KOWLOON, Hong Kong, Jul 24, 2019 – Precise Simulation Ltd. is pleased to announce that its FEATool Multiphysics version 1.11 has now been released and extends the multi-simulation solver concept even further by introducing a fluid-structure interaction (FSI) solver (in addition to the existing built-in multiphysics, OpenFOAM, and FEniCS solver integrations).

The following new features are available with FEATool Multiphysics 1.11.

Fluid-Structure Interaction (FSI)

FEATool now features a built-in FSI physics mode and dedicated FSI solver to make fluid-structure interaction simulations easy to set-up directly from both the GUI and optional command-line interface. This enables the study of models where the coupling of fluid effects, large deformation, and forces on structures are important, such as in bio-medical devices.

The video above shows the results from a FEATool simulation of an hyper-elastic beam in a laminar flow and agrees well with the reference FSI reference benchmark. The linked tutorial below also features step-by-step instructions on how to set up and perform the simulation in the FEATool GUI.

3D Geometry Engine

The 3D geometry engine has been upgraded with optional interfaces for the OpenCASCADE and BRL-CAD open source CSG geometry engines. Moreover, additional geometry primitives such as polyhedron, ellipsoid, (capped) cone, and a torus are now also available. This allows for more complex 3D geometries to be implemented directly in the FEATool CAD GUI in addition to the existing STL CAD import facilities.

Linear Solvers

FEATool now also includes more efficient linear solvers, firstly the direct solver MUMPS which offers about 20% faster performance than the default built-in sparse solver in the single-threaded mode, and also supports parallel execution. In addition, iterative solvers such as GMRES and BiCGStab with ILU(k) preconditioning is also now supported which are more memory efficient than direct solvers and therefore allows for larger simulations. Users can also override the linear system call with custom sparse solvers.

Additional New Features

  1. Dedicated and improved treatment of internal/interior boundaries
  2. Support for Gmsh v4.x GEO file format geometry import and export
  3. New examples and tutorials for thermo-mechanical couplingfluid-structure interaction, and non-Newtonian flow
  4. P1/P2 bubbleNedelec curl, and Raviart-Thomas vector finite element shape functions
  5. Miscellaneous GUI and usability improvements

FEATool Multiphysics is available as a dedicated MATLAB Add-On and self-contained physics simulation toolbox (install with one-click directly from the MATLAB Add-Ons Toolbar or free to download from the link below).

About FEATool Multiphysics

The FEATool Multiphysics software suite is developed by Precise Simulation Ltd. Established in 2013, after close to two decades of developing both commercial and academic simulation FEM and CFD codes, Precise Simulation was founded as a reaction to the frustration of having to choose between closed, complex, and difficult to use commercial software tools, or open-source but (even more) difficult to use academic tools, with nothing in between.

The idea and vision of FEATool are then to provide a truly easy to use a software simulation tool that everyone can use right away (with the ultimate goal not to require users to consult any documentation at all). In particular, starting with FEniCS and FeatFlow, FEATool uniquely aims to provide easy interfaces to excellent academic and open-source simulation codes and software which otherwise would take a significant time to understand, learn to use, and run. For more information, visit http://www.featool.com.

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