Computations of the structure and energy of two-dimensional domain wal
ls are reported for the case of homogeneous and uniform wall motion, b
oth for Permalloy and for Fe films. The assumption of a constant wall
velocity turns out to be applicable only to rather low velocities, and
breaks down at higher velocities, presumably because new vortices are
created at such velocities, and the motion becomes turbulent. However
, for these smaller velocities, the computations are extended here to
much larger film thickness than has been published so far.