Dust Growth and Settling in Turbulent Protoplanetary Disks and Disk Spectral Energy Distributions

Abstract

We performed numerical simulations of dust growth and settling in turbulent protoplanetary disks and spectral energy distributions from the disks. We adopted the alpha model turbulence and assumed the turbulence is homogeneous and isotropic. Our results shows that turbulence accelerates grain growth especially in the inner part of the disk. Because of the accelerated grain growth, micron-sized grains decreases much more rapidly than the case of laminar disks.In the outer part of the disk, on the other hand, turbulence does not affect grain growth much.