  In this paper, we reexamine the possibility of shear-driven turbulence during
sedimentation of dust grains in the protoplanetary disk. The shear-driven
turbulence is expected to occur before the onset of the gravitational
instability for MMSN model. While according to previous studies without taking
account of growth of dust grains, with the larger abundance of dust grains, the
gravitational instability is indicated to occur before shear-driven turbulence.
In this paper, the case with dust growth is considered, and it is found that
the Kelvin-Helmholtz instability tends to occur before the gravitational
instability even in the case with large abundance of dust grains. This is
different from previous results without the dust growth.
