Modelling dust grains coagulation in molecular clouds
Event details
| Date | 11.06.2014 |
| Hour | 10:30 › 11:30 |
| Speaker | Paolo Paruta, Politecnico Milano, I |
| Location |
PPB 019
|
| Category | Conferences - Seminars |
The interstellar space is filled with rarefied gas that transports small dust particles, whose coagulation process has a key role in understanding stars and planets formation. At KU Leuven, an already existing finite volume code (MPI-AMRVAC) successfully reproduces dust and gas dynamics, by solving the Euler equations and computing the drag force, but grain-grain interactions still have to be implemented. In order to find a suitable coagulation model, the physics of the process is deepened, then, starting from a recently proposed discrete model, its continuous form is derived (resulting in the well-known Smoluchowski coagulation equation), which allows for a mathematical study on existence and uniqueness of a mass conserving solution. The problem is rewritten with a non-linear hyperbolic integro-differential equation, a finite volume approach is chosen and the numerical results are tested against the initial discrete model. Finally, the possible implementation in MPI-AMRVAC is investigated.
Practical information
- Informed public
- Free
Organizer
- P. Ricci, CRPP
Contact
- P. Ricci, CRPP