A N-Body simulation.

This repo contains my Bachelor's thesis.

It has three configurations:

• brute: brute force method
• bhtree: tree based method
• parallel: tree based method (parallel)

• Qt 5.
• C++11 onwards

qmake
make
bin/nbody configuration [iterations] [trace]

Input must come in a file format, in which the first line indicates the number of bodies and the second the radius of the universe.

From the third line, each line represents a body, with the parameters as follows:

mass posx posy velx vly

The program reads the input file from the standard input.

10k.txt: 10000 bodies orbiting in an elliptical way.

10k.txt: 20000 bodies orbiting in an elliptical way.

30k.txt: 30000 bodies orbiting in an elliptical way.

asteroids.txt: 1000 asteroids orbiting around a star.

cluster.txt: A 2500 particle cloud.

collapse.txt: A 2500 particle cloud collapses into a galaxy.

dual.txt: Two galaxies orbiting each other.

galaxy.txt: A galaxy moving through space.

merge.txt: Four 1000 particles collapse.

planets.txt: A star system composed by 4 planets.

saturn.txt: Saturn rings.

spiral.txt: A round galaxy becomes a spiral one.

Credits of the input files to Adam Chin and Rohan Kapadia.