A modern approach to the evolution of a mixed (stars and gas) self-gravitating system is the fully Lagrangian particle approach. The gaseous (particle) phase differs from the compact because the mutual force is given by the sum of gravity and pressure gradient. In this note we report of some characteristics, advantages and limitations of this approach for what regards the evaluation of forces in the system. In particular, a comparison between classic tree-code and fast multipole algorithm to evaluate gravitational forces is discussed.
Force Evaluation in Particle Methods for Self-Gravitating Multi-Phase Systems / CAPUZZO DOLCETTA, Roberto Angelo; R., Di Lisio; Miocchi, Paolo. - STAMPA. - (1997), pp. 395-397. (Intervento presentato al convegno General Relativity and Gravitational Physics, 12th Italian Conference tenutosi a Roma nel 23-27 September 1996).
Force Evaluation in Particle Methods for Self-Gravitating Multi-Phase Systems
CAPUZZO DOLCETTA, Roberto Angelo;MIOCCHI, PAOLO
1997
Abstract
A modern approach to the evolution of a mixed (stars and gas) self-gravitating system is the fully Lagrangian particle approach. The gaseous (particle) phase differs from the compact because the mutual force is given by the sum of gravity and pressure gradient. In this note we report of some characteristics, advantages and limitations of this approach for what regards the evaluation of forces in the system. In particular, a comparison between classic tree-code and fast multipole algorithm to evaluate gravitational forces is discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
