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

AI Thread Summary
The discussion revolves around the possibility of using fluid equations to analyze the dynamics of stars in a galactic potential, as opposed to relying solely on n-body simulations. The user is currently simulating normally distributed non-interacting stars and is interested in how varying the galactic potential affects their dynamics. They express a desire to model the system using density distributions, potentially utilizing the Boltzmann equation, despite its focus on self-gravitating systems. The inquiry seeks suggestions for more analytical approaches to this problem. Overall, the conversation highlights the intersection of fluid dynamics and astrophysical simulations.
FunkyDwarf
Messages
481
Reaction score
0
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
 

Thread 'Is calling fictitious forces "not real" just about terminology?'

Hi there, im studying nanoscience at the university in Basel. Today I looked at the topic of intertial and non-inertial reference frames and the existence of fictitious forces. I understand that you call forces real in physics if they appear in interplay. Meaning that a force is real when there is the "actio" partner to the "reactio" partner. If this condition is not satisfied the force is not real. I also understand that if you specifically look at non-inertial reference frames you can...
View full post »

Thread 'Derivation of Hamilton's Principle: Questions'

I have recently been really interested in the derivation of Hamiltons Principle. On my research I found that with the term ##m \cdot \frac{d}{dt} (\frac{dr}{dt} \cdot \delta r) = 0## (1) one may derivate ##\delta \int (T - V) dt = 0## (2). The derivation itself I understood quiet good, but what I don't understand is where the equation (1) came from, because in my research it was just given and not derived from anywhere. Does anybody know where (1) comes from or why from it the...
View full post »

Similar threads

Pressure Differential in Fluid Dynamics: Why More on the '+s' Side?
Replies
5
Views
2K
Applicability of potential flow theory (fluid dynamics)
Replies
3
Views
3K
Programs Universities for Research in Dynamical Systems of Fluids
Replies
4
Views
2K
I Static sphere with gravitating fluid
Replies
6
Views
1K
Flow of air through an open tube with a balloon
Replies
9
Views
4K
Bernoulli's equation confusion?
Replies
5
Views
2K
Does air flowing through a tube cause a pressure change?
Replies
29
Views
5K
How Does Bernoulli's Equation Explain Fluid Dynamics?
Replies
1
Views
8K
Which Undergraduate Degree Path is Best for Fluid Dynamics and Plasma Physics?
Replies
10
Views
2K
A Interactive Galactic Dynamics Textbook -- Bovy 2022
Replies
2
Views
2K

Hot Threads

Recent Insights

Back
Top