lid velocity = 0.0625, prandtl # = 1., grashof # = 1.
  0 SNES Function norm 0.239155
    0 KSP Residual norm 0.239155
    1 KSP Residual norm < 1.e-11
  1 SNES Function norm 6.81968e-05
    0 KSP Residual norm 6.81968e-05
    1 KSP Residual norm < 1.e-11
  2 SNES Function norm < 1.e-11
Number of SNES iterations = 2