NagBody (Numerical Algorithms for General Body Dynamics) - or Physics with particles

• About NagBody

• Codes forming NagBody

• General N-body codes:

• nbody_n2 - simple code to evolve a self-gravitating N-body system. Direct force computation is done. Complexity (N*N).
• models - code to generate various models: Plummer sphere, isothermal sphere, uniform gas sphere with an azimuthal perturbation, among others.
• analysis_grav - code to analyze snapshot data.
• pnbody - parallel code to evolve general N-body systems.

• Code to simulate galactic dynamics:

• galaxy_models.
• pgalaxy.
• analysis_galaxy.

• Codes to simulate galactic dynamics under the influence of scalar fields in its Newtonian limit:

• gbsph - Hierarquical genereal body and smoothed particle hydrodynamics.
• pgalaxy - modified parallel gadget code to include the scalar field contribution.
• pnbody - parallel code to evolve general N-body systems. It has in particular a Yukawa type of force which comes from the Newtonian limit a scalar-tensor theory.

• Codes for simulations of cosmological fluids under the influence of scalar fields in its Newtonian limit:

• pcosmos - modified gadget code to include the scalar field contribution.

• Smoothed particle hydrodynamics codes:

• gbsph - Hierarquical genereal body and smoothed particle hydrodynamics.
• sph_sf - SPH code to evolve baryonic matter that include the effects of scalar fields.

• Molecular dynamics codes to simulate a Lennard-Jones liquid:

• md_lj_n2 - Direct force calculation for molecular dynamics simulation of a Lennard-Jones liquid.
• md_lj_tree - Hierarquical force calculation for molecular dynamics simulation of a Lennard-Jones liquid.
• md_blj_tree - Hierarquical force calculation for molecuar dynamics simulation of a binnary liquid. In particular, a Lennard-Jones liquid. A particular force can be given as data table.
• pmd_lj - parallel code for molecular dynamics simulation of a Lennard-Jones liquid.
• analysis_md - code to analyze snapshot data.

• Visualization codes:
  • nplot2d - a code to make 2D plots. It is based on the plplot library.
  • nplot3d - a code to make 3D plots. It is based on the plplot library.

• Some movies of simulations of galaxy collisions are at:

• www.astro.inin.mx/movies/movies.html
• www.astro.inin.mx/ruslan/tidal_bars

As soon as other codes, forming the NagBody project, are ready will be posted in this page.