Grid refinement on a circular pipe with an obstruction

I am new on Palabos and I do not have much experience with the code. I tried to simulate a straight circular pipe with an obstruction in the middle. I was successful to run it with a constant grid following the aneurysm tutorial. Now I would like to update the model adding the grid refinement around the obstruction.

I looked to the grid refinement 3D example, however this tutorial has some differences respect to the case I want to simulate. First it is an external flow and secondly in the tutorial the stl surface lies all inside the finer grid block. Respect to this second aspect I was wandering if Palabos can handle the off lattice boundary conditions spreading across all the refinement blocks as the pipe wall crosses both the coarser and the finer mesh regions.


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