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In this paper, we reexamine the possibility of shear-driven turbulence duringsedimentation of dust grains in the protoplanetary disk. The shear-driventurbulence is expected to occur before the onset of the gravitationalinstability for MMSN model. While according to previous studies without takingaccount of growth of dust grains, with the larger abundance of dust grains, thegravitational instability is indicated to occur before shear-driven turbulence.In this paper, the case with dust growth is considered, and it is found thatthe Kelvin-Helmholtz instability tends to occur before the gravitationalinstability even in the case with large abundance of dust grains. This isdifferent from previous results without the dust growth.

The Possibility of the Kelvin-Helmholtz Instability during Sedimentation of Dust Grains in the Protoplanetary Disk