lid velocity = 0.0025, prandtl # = 1., grashof # = 1.
  0 SNES Function norm 0.0509771
    0 KSP Residual norm 0.447816
    1 KSP Residual norm < 1.e-11
  1 SNES Function norm 4.20112e-06
    0 KSP Residual norm 1.66584e-05
    1 KSP Residual norm < 1.e-11
  2 SNES Function norm < 1.e-11
Number of SNES iterations = 2