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pro vyhledávání: '"Cossins, Peter"'
The gravitational instability and its role in the evolution of protoplanetary and protostellar discs
Autor:
Cossins, Peter John
In this thesis I present numerical simulations of massive, cold, non-ionised self-gravitating accretion discs about a central massive object, and then use them to investigate structure formation and energy/angular momentum transport, the effects of d
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.530664
We investigate the kinematic evolution of planetesimals in self-gravitating discs, combining Smoothed Particle Hydrodynamical (SPH) simulations of the disc gas with a gravitationally coupled population of test particle planetesimals. We find that at
Externí odkaz:
http://arxiv.org/abs/1302.7216
Publikováno v:
MNRAS, 410, pp 994-1006 (2011)
Semi-analytic models of self-gravitating discs often approximate the angular momentum transport generated by the gravitational instability using the phenomenology of viscosity. This allows the employment of the standard viscous evolution equations, a
Externí odkaz:
http://arxiv.org/abs/1008.1547
Autor:
Cossins, Peter J.
I present a review of Smoothed Particle Hydrodynamics (SPH), with the aim of providing a mathematically rigorous, clear derivation of the algorithms from first principles. The method of discretising a continuous field into particles using a smoothing
Externí odkaz:
http://arxiv.org/abs/1007.1245