Its quite an intresting case, I hope you want to do conformtal meshing or say Designer meshes, Start with single scale to initate the mesh, use the edge mesh to control the number of divisins and then try with mapped mesh and see weather there is an kind of betterment in the mesh, i always prefer SPH , this will eliminate the mesh dependency and introduce you with the paticel size, that an lot said, comment down your results for better help.nCheers, Ram n