OpenFOAM® tutorial: Falling wedge (overset mesh)


overInterDyMFoam solver


This tutorial shows how to use overset mesh techniques with OpenFOAM®. The case study (2D) model the fall of a wedge as in The movement of the wedge is generated by the 6DOF Module of OpenFOAM® (sixDoFRigidBodyMotion) with one degre of freedom allowed: vertical translation. The mesh overset technique is used to capture solid body movements and is particularly interesting for large displacements, where mesh deformation methods fail.

  • The tutorial uses the overInterDyMFoam solver (interFoam version with the mesh overset technique) introduced since the 1706+ version of OpenFOAM®.

Calculation time:

  • Around 10 min on 4 cores – iAMD® Ryzen 5 4600h.


  • OpenFOAM®: Tested on versions 2006+ // 2012+. Warning, the tutorial does not work with versions (4.0, 5.0, 6.0, 7.0 etc.) from the OpenFOAM® Foundation (

  • The tutorial is designed to run on 4 cores but can be easily modified to be run on the number of core chosen by the user.
  • It is recommended that you use the latest version of OpenFOAM® + to improve the performance of the overset module.

  • Paraview (post-processing).

CFD-training does not give any warranty to the numerical results obtained within this tutorial due to the absence of verification or validation.



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