lid velocity = 100., prandtl # = 1., grashof # = 40000.
  0 SNES Function norm 1065.74
  1 SNES Function norm 94.1355
  2 SNES Function norm 21.1753
  3 SNES Function norm 5.85898
  4 SNES Function norm 0.730301
  5 SNES Function norm 0.15855
  6 SNES Function norm 0.0296328
  7 SNES Function norm 0.0115279
  8 SNES Function norm 0.00209216
  9 SNES Function norm 0.000312942
 10 SNES Function norm 3.50342e-05
 11 SNES Function norm 2.89834e-06
Number of SNES iterations = 11