Can Galactic Fluid Dynamics Be Analyzed More Analytically Using Fluid Equations?

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SUMMARY

The discussion centers on the feasibility of analyzing galactic fluid dynamics using fluid equations instead of n-body simulations. The user is currently simulating non-interacting stars within a galactic potential and seeks to explore whether analytical methods, particularly the Boltzmann equation, can effectively model the dynamics of these stars through density distributions. The consensus suggests that while the Boltzmann equation is suitable for self-gravitating systems, alternative fluid equations may provide insights into the behavior of stars in varying potential landscapes.

PREREQUISITES
  • Understanding of n-body simulations in astrophysics
  • Familiarity with the Boltzmann equation and its applications
  • Knowledge of fluid dynamics principles
  • Concept of density distributions in gravitational contexts
NEXT STEPS
  • Research alternative fluid equations applicable to non-self-gravitating systems
  • Explore the application of the Vlasov equation in galactic dynamics
  • Investigate methods for modeling density distributions in gravitational potentials
  • Learn about computational techniques for integrating fluid dynamics with n-body simulations
USEFUL FOR

Astronomers, astrophysicists, and researchers in computational fluid dynamics who are interested in modeling galactic structures and dynamics analytically.

FunkyDwarf
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Hey guys,

I have the following (non-homework) problem:

I am simulating a collection of normally distributed non-interacting stars falling into a much larger galactic potential from some radial distance and some initial velocity and watching them slosh around in this potential. Currently i am doing this via n-body simulations and looking at how the dynamics change when i make the potential more or less lumpy. My question is: is it possible to do this more analytically via fluid equations? My understanding is that things like the Boltzmann equation would be good to work with except they describe self gravitating systems. Basically what i would like to be able to do is model everything via density distributions, ie i plug a (number or mass it doesn't matter, considering equal mass test particles) density distribution into a potential caused by something else and see what happens. Any suggestions?

Cheers
-G
 
Physics news on Phys.org
i don't know, but your work definitely sounds interesting and i wish i could work on it
 

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