17 Apr 2015
April 17, 2015

TS CFD Code Development Update

 

Development Update and Road Map

We thought it was time to update you with our development plans for 2015 and give you an overview of the key features that we hope to be able to release for general use in the next few months.  Before we do that here is a roundup of some of the things we did in 2014.

Key Developments in 2014

  • 2.2 Update – The whole suite of core codes was updated to OpenFOAM®** release 2.2.xD, following an extensive period of testing within TS. So far the feedback on this new version has been good with nearly all customers positive about the change and associated improvements.Thermal CFD Simulation of a Race Car Showing Temperature Convection
  • Thermal Modelling – We’ve spent a lot of time working on our capability for modelling thermal flows. As well as writing a whole process to automate the meshing of complex multi-region geometries for full conjugate heat transfer modelling, we’ve been working on modelling radiation efficiently and coupling the process with RadTherm.
  • Acoustic Modelling – We’re also getting an increasing number of enquiries from Support Customers around aero-acoustic simulation for automotive applications. We’ve got some code that is ready for Support Customers to test already but there is more functionality that we hope to be able to add to it in the near future. Let us know if you want to know more.
  • Mesh Motion – This is another area that started to become increasingly important last year. We’ve already started writing some tools to help assemble meshes up in parallel and to interpolate a solutions from one mesh to another (in parallel) as part of a ‘deform and map’ moving mesh strategy. We also undertook our first automotive simulation with all four wheels rotating for a paper at the IMechE Aerodynamics Conference. We are hoping to complete the automation of this process later in the year.

Below is an overview of some of the developments which we hope to deliver over the next 12 months, split into short and mid term goals.

Short Term Priorities (Early/Mid 2015)

  • DES Methodology Speed Up – A new method has been developed to help reduce the run time for DES simulations, this is currently being tested internally. Current indications are that full-car cases (~60 million cells) will solve 1.5s of solution time in just over 24hrs on 48 cores.
  • snappySetup Improvements – A pre-processing tool to remove the need to split up surfaces/geometry prior to meshing.  This tool is currently available as a beta tool.
  • Aeroacoustics – Release of a new methodology and template for aero acoustic modelling with additional features.
  • CCM+/Fluent Models – A conversion/setup tool for the solving of CCM+/Fluent cases within OpenFOAM®.  This tool is currently available on request only.
  • ‘Robust’ Family of Solvers – We’ve implemented some new techniques to try and minimise the risk of any issues with solver stability. These have been effective on improving reliability for non-snappyHexMesh meshes.

    CFD Simulation of a Planing Hull by TotalSim

    Free surface simulation using OpenFOAM.

  • Free-surface Methods – Release of a new template and meshing strategy for the modelling of free surfaces and marine applications.
  • boSpec – A major upgrade to this code allowing any valid OpenFOAM boundary conditions to be applied.
  • Gradient Caching – This should allow significant speed up for both RANS and DES methodology.  This is currently in the testing phase internally whilst we try to iron out any issues.
  • Streamlines – Fix streamline export from within OpenFOAM to make it more robust.

 Mid Term (End of 2015)

  • Compressible Solver – Functionality to solve sonic restrictors and other similar compressible problems.
  • Sliding Mesh Models – Automation of the meshing and setup of sliding mesh cases.
  • postPro Development – A ‘ground up’ re-write of TotalSim’s automated postpro to allow it to be applicable for any CFD application.
  • Cornering Flow – Continued development of TotalSim’s cornering flow capability to help further optimise the setup and integration with other tools such as ride height changer.
  • Synthetic Eddy Model – To develop a method to generate upstream turbulent structures for unsteady cases.
  • Conjugate Heat Transfer – Release templates and methodology for the modelling of CHT applications.

For more information on CFD Support with TotalSim then please follow the link or contact us via support@totalsim.co.uk

**OpenFOAM® and  OpenCFD® are registered trade marks of ESI.

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