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Oscillating mesh movement

I want to run a simulation in which the DTCHull mesh oscillates left and right in a sinusoidal manner across the water, as is shown in this diagram (Oldfield et. al. 2015): Oldfield et. al. 2015 How would I do this with interDyMFoam? I've seen examples in which rigid-body behaviour is simulated with dynamic meshes (e.g. floatingObject). However, what I need here is to have plain prescribed motion.

Solution

  • To this end, overInterDyMFoam from OpenFOAM-v1712 (starting from OpenFOAM-v1706) can be used alongside the prescribed rigid body motion functionality.

    overInterDyMFoam is the interDyMFoam using overset mesh functionality wherein mesh deformation in the latter is replaced by the Chimera grid concept.

    Considering no set-up was mentioned in your question and therefore further settings can't be recommended on top of them, I can suggest the following tutorials for a model development from scratch:

    • tutorials/multiphase/overInterDyMFoam/floatingBody for overInterDyMFoam settings, and
    • tutorials/incompressible/pimpleDyMFoam/oscillatingInletACMI2D for prescribed oscillatingLinearMotion settings (Might be other tutorials regarding this).