3D SPH simulations of grain growth in protoplanetary disks

Details 3D SPH simulations of grain growth in protoplanetary disks 3D SPH simulations of grain growth in protoplanetary disks

2007-12-05

arxiv.org/abs/0712.0772v2

Dans Proceedings of IAU Symp. 249 - Exoplanets: Detection, Formation and Dynamics, Suzhou : Chine (2007)

Astronomy and Astrophysics

Astrophysics

3 pages, 3 figures, to appear in the Proceedings of IAU Symp. 249: Exoplanets: Detection, Formation and Dynamics (Suzhou, Chin

Scientific paper

10.1017/S1743921308016864

We present the first results of the treatment of grain growth in our 3D, two-fluid (gas+dust) SPH code describing protoplanetary disks. We implement a scheme able to reproduce the variation of grain sizes caused by a variety of physical processes and test it with the analytical expression of grain growth given by Stepinski & Valageas (1997) in simulations of a typical T Tauri disk around a one solar mass star. The results are in agreement with a turbulent growing process and validate the method. We are now able to simulate the grain growth process in a protoplanetary disk given by a more realistic physical description, currently under development. We discuss the implications of the combined effect of grain growth and dust vertical settling and radial migration on subsequent planetesimal formation.

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