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SUMMARY:Modelling dust grains coagulation in molecular clouds
DTSTART:20140611T103000
DTEND:20140611T113000
DTSTAMP:20260611T014957Z
UID:ba398e6e6d2ebf02d85d5967bab9b2e7cbf92f99914eaa9bdf40b9a4
CATEGORIES:Conferences - Seminars
DESCRIPTION:Paolo Paruta\, Politecnico Milano\, I\nThe interstellar space 
 is filled with rarefied gas that transports small dust particles\, whose c
 oagulation process has a key role in understanding stars and planets forma
 tion. At KU Leuven\, an already existing finite volume code (MPI-AMRVAC) s
 uccessfully reproduces dust and gas dynamics\, by solving the Euler equati
 ons and computing the drag force\, but grain-grain interactions still have
  to be implemented. In order to find a suitable coagulation model\, the ph
 ysics of the process is deepened\, then\, starting from a recently propose
 d discrete model\, its continuous form is derived (resulting in the well-k
 nown Smoluchowski coagulation equation)\, which allows for a mathematical 
 study on existence and uniqueness of a mass conserving solution. The probl
 em 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.
LOCATION:PPB 019
STATUS:CONFIRMED
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