lid velocity = 0.0625, prandtl # = 1., grashof # = 1.
    0 KSP Residual norm 2.358581702614e-01 
    1 KSP Residual norm 4.350078610856e-17 
    0 KSP Residual norm 2.309061716136e-05 
    1 KSP Residual norm 3.520316290211e-21 
Number of SNES iterations = 2
