A particle method for a self-gravitating fluid: A convergence result
β Scribed by Roberto Di Lisio
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 409 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0170-4214
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
We study an Hamiltonian system of N particles in β^3^ interacting by a shortβrange repulsive and a longβrange attractive potential. It is shown that the empirical measures associated to the positions and velocity of the system converge to the solutions of Euler equations for a selfβgravitating fluid, in the limit as the particle number tends to infinity, for a suitable scaling of the interactions.
π SIMILAR VOLUMES
We have investigated the viscosity (the angular momentum flux) in dense, self-gravitating particle disks such as Saturn's main ring, by performing local N-body simulations. Viscosity could play important roles in evolution and structure formation of planetary rings. The ring's viscosity has been inv
Rcceivcd 13 December 1982;in final form 9 Aupust 19S3 -4 ne\\ efficient semi-itcr.ati\c convergence accelcr.Gion method is prcscntcd aid ilhlwacd b> ex.nnplcs of SCI: iteration.