Simulation project of an exhaust manifold by Tobias Holzmann

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  • contributor: Tobias Holzmann
  • affiliation: Holzmann CFD
  • contact: click here for email address
  • OpenFOAM version: 4.x (all tutorials are updated to 4.x since 23.11.16)
  • published under: GPL v3 license

Go back to Basics.

Go back to Day 15.

How To Build a Project - Exhaust manifold

The following screencasts will guide you through a CFD simulation project with an exhaust manifold.

4.1 Start a Project

  • Generate the project folder
  • Get your geometry file
  • Load it to Salome for preparation

4.2 Prepare the Geometry

  • Geometry preparation
  • Close the geometry
  • Further preparation for reparing

4.3 Reparing the Geometry

  • Further reparing the geometry for the next steps

4.4 Surface Triangulation

  • Generate patches for OpenFOAM
  • Showing the differences between CAD exported STLs and manuel triangulated one
  • Triangulation of the patches
  • Generating the background mesh

4.5 STL Preparation

  • Exporting the background mesh and STLs
  • Preparing STLs for a region STL (compound)
  • Checking for water proofness
  • Transforming the background mesh to an OpenFOAM mesh

4.6 First snappyHexMesh

  • Meshing the geometry with snappyHexMesh
  • Setting up the snappyHexMesh file
  • Explaining a few things about the snappyHexMeshDict and the keywords

4.7 Optimizing the Mesh

  • Further discussion of different keywords
  • Optimizing the mesh
  • Feature snapping
  • Implicit and explicit feature edge snapping
  • Generate feature edges
  • Generation of layers

4.8 Boundary Set-up and First Run

  • Set-up of simple boundary conditions for p and U
  • Start the solver
  • Check out the first numerical results

4.9 Adbanced Boundary Conditions

  • Set-up of more physical boundary conditions
  • Discussion about the boundary face calculation
  • Building a mixed boundary condition (codedMixed)