   mesh
   radial trisection
    trisection blocks, 4
     mintheta 22.5 
    numr 3 initial radius 3.0
      rblock 1 0.2 interval 4 
      rblock 2 0.3 interval 4
      rblock 3 0.5 interval 4
    numa 8
      ablock 1 45.0  interval 8
      ablock 2 45.0  interval 8
      ablock 3 45.0  interval 8
      ablock 4 45.0  interval 8
      ablock 5 45.0  interval 8
      ablock 6 45.0  interval 8
      ablock 7 45.0  interval 8
      ablock 8 45.0  interval 8
    end
   set assign
        nodeset, ihi, 40
        block sideset, ihi, 800, 17
        block sideset, ihi, 700, 15 
        block sideset, ihi, 600, 13 
        block sideset, ihi, 500, 11
        block sideset, ihi, 400, 9
        block sideset, ihi, 300, 7
        block sideset, ihi, 200, 5
        block sideset, ihi, 100, 3

        block nodeset, ihi, 801, 17
        block nodeset, ihi, 701, 15 
        block nodeset, ihi, 601, 13 
        block nodeset, ihi, 501, 11
        block nodeset, ihi, 401, 9
        block nodeset, ihi, 301, 7
        block nodeset, ihi, 201, 5
        block nodeset, ihi, 101, 3

    end

    decomposition strategy
$    sequential
 
    end
  end

