global size = 1024, lid velocity = 0, prandtl # = 1, grashof # = 1000
  0 SNES Function norm 62.2222 
  1 SNES Function norm 6.23783 
  2 SNES Function norm 0.099428 
  3 SNES Function norm 5.79704e-05 
  4 SNES Function norm 1.07024e-09 
Number of Newton iterations = 4
