Astrophysics (index)

N-Body Simulation

(simulation of many objects gravitationally-bound to each other)

An N-Body Simulation is a type of computer simulation of planets or stars or other objects and their gravitational interaction. The N-Body Problem is not generally solvable by equation, so simulation is the means to solutions.

A simple N-body simulation might be to calculate the gravitational force on each body and thus its acceleration, then estimate where it will be after a small time increment, then repeat. To handle many bodies, e.g., stars in a simulated Galaxy, methods of optimizing this have been devised.

Example software:

Some software that also includes Hydrodynamics:

An example simulation is Millennium Run.

(software type,simulation,models)

Referenced by:
Computational Astrophysics
N-Body Problem
Semi-Analytic Model (SAM)