Class NBodySimulation

java.lang.Object

org.episteme.natural.physics.classical.mechanics.nbody.NBodySimulation

public class NBodySimulation
extends Object

Direct N-body gravitational simulation (O(n²)). Simulates particle interactions using Newton's law of universal gravitation. For large-scale simulations, use BarnesHutSimulation for O(N log N) complexity.

References:

• Newton, I. (1687). Philosophiae Naturalis Principia Mathematica.
• Aarseth, S. J. (2003). Gravitational N-body simulations: tools and algorithms. Cambridge University Press.

Since:

1.0

Author:

Silvere Martin-Michiellot, Gemini AI (Google DeepMind)

Constructor Summary

Constructors

Constructor	Description
NBodySimulation()
NBodySimulation(Real G)

Method Summary

Modifier and Type	Method	Description
void	addParticle(double x, double y, double z, double mass)
void	addParticle(Particle p)
void	computeForces()
List<Particle>	getParticles()
Real	kineticEnergy()
Real	potentialEnergy()
void	run(Real dt, int steps)
void	setProvider(NBodyProvider p)
void	setSoftening(Real s)
void	step(Real dt)
static NBodySimulation	sunEarth()
Real	totalEnergy()

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

NBodySimulation

public NBodySimulation()

NBodySimulation

public NBodySimulation(Real G)

Method Details

setProvider

public void setProvider(NBodyProvider p)

addParticle

public void addParticle(Particle p)

addParticle

public void addParticle(double x,
 double y,
 double z,
 double mass)

getParticles

public List<Particle> getParticles()

setSoftening

public void setSoftening(Real s)

computeForces

public void computeForces()

step

public void step(Real dt)

run

public void run(Real dt,
 int steps)

kineticEnergy

public Real kineticEnergy()

potentialEnergy

public Real potentialEnergy()

totalEnergy

public Real totalEnergy()

sunEarth

public static NBodySimulation sunEarth()