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Mesh generation process

Mesh generation process has two main phases:

  • background mesh generation.
  • snappyHexMesh mesh generation:
    • castellate mesh
    • snap mesh
    • add layers

To imagine the meshing process, see the attached video
training/run/snappyTestCase/snappyEvolution.mp4,
which shows all the intermediate steps of snappyHexMesh mesh generation.

Subsections

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Next: Model setting without an Up: Alternative formulation Previous: Alternative formulation   Contents   Index

What is OpenFOAM?

  • OpenFOAM is the world leading open-source tool for Computational Fluid Dynamics
  • It is designed as an easily extend-able package of functions for numerical simulations, based on Finite Volume Method
  • The code is distributed under GNU General Public License
    (http://www.gnu.org/copyleft/gpl.html)
  • OpenFOAM is a free, open source CFD software package developed by OpenCFD Ltd at ESI Group and distributed by the OpenFOAM Foundation. It has a large user base across most areas of engineering and science, from both commercial and academic organisations. OpenFOAM has an extensive range of features to solve anything from complex fluid flows involving chemical reactions, turbulence and heat transfer, to solid dynamics and electromagnetics.,
  • http://www.openfoam.com/

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Previous: Geometry & Mesh Up: Turbo Blade Post – Next: Step by step guide
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Example: Meridional average

The aim of the first example is to meridionally average the scalar quantities in the vicinity of the blades, in the rotating (MRF) section of the fluid. Whereas the simple axial slice very often cuts a blade, the meridional average avoids the holes by displaying circumferential average of values around the axis of rotation, see figure [*].
turbo blade post cfd pump ma average
turbo blade post cfd pump ma slice

Figure: Comparison between a common ParaView Slice filter (top) and Turbo Blade Post Meridional Average filter (bottom) – application on TCFD (OpenFOAM) calculation of incompressible flow in a pump.

Subsections

Step by step guide

OpenFOAM Training by CFD Support,   CFD SUPPORT,   info@cfdsupport.com    +420 212 243 883      © CFD support, s.r.o., Sokolovská 270/201, 190 00 Praha 9, Czech Republic