[Hannes_Kiel]

Hi,
I'm looking for a way to generate a mesh around a ship with the "typical" refinement of the free surface region to capture the waves.
Basically, what I intend to do is following:
- start with a base grid (from BlockMesh) with identical cells of aspect ratio approx. 1
- in SHM:
- refine near hull and appendages as usual by isotropic splitting of cells (1 -> 8)
- refine the free surface further away from ship mostly normal to the initial waterplane (anisotropically) as the waves are expected to be significantly longer than high (I don't want to waste cells, isotropic refinement of larger regions significantly pushes cell count)
- snap to hull and appendages
- create inflation layers for boundary layer

The difficulty is the anisotropic refinement of the free surface region. In Hexpress or Star-CCM+ mesher I can define either isotropic or anisotropic refinement for a region. In SHM, as far as I understand it, only isotropic refinement is possible in the Dict and the hex8 class referenced by SHM (although the refineMesh utility has anisotropic refinement).

Does anyone have a solution to this problem, either by a modification to SHM or a specific workflow?

Thanks
Hannes