Numerical GR

  • Thread starter edpell
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  • #51
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This is the closest thing to a simulation of an orbit in GR available on the internet http://www.fourmilab.ch/gravitation/orbits/ for the very limited case of a low mass test particle orbiting a massive body that has a mass that is many orders of magnitude larger than the mass of the test particle. The source of the applet is downloadable for anyone who wants to see the equations used. It does not seem to include orbital decay due to gravitational radiation but that is probably reasonable for a test particle of insignificant mass. I think the program uses exact GR equations which are possible for this very limited case, rather than numerical aproximations, but it might still be of interest.
Hi, I appreciate all you links. Perhaps after having some basic knowledge, then such source code could save months, but if you don't even know what to look for, then I would not do that unless I wanted to torture myself. -- The best way to learn how to use some equation is to see someone apply it on some simple case scenario. Teach a man how to fish...
 
  • #52
atyy
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I find your lack of faith disturbing. As I said, I happen to be a master of the dynamical systems, numerical modeling, animation and integration algorithms. We do not really need to talk about me anymore, so relax and concentrate on the discussion.
So what do you think of the book "Numerical recipes" http://www.nr.com/ ?
 
  • #53
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You know, I'm glad my friend didn't come over and actually participate in this thread. He'd have been utterly disgusted by Dunnis, and probably wondered what the hell I saw in this place.

@Dunnis: http://en.wikipedia.org/wiki/Dunning–Kruger_effect
http://en.wikipedia.org/wiki/Crank_(person)#The_psychology_of_cranks

You reading those is like you looking into a mirror. Relish the experience. By the way, "We do not really need to talk about me anymore" as you post more drivel, is a truly pathetic cry for attention.
 
  • #54
Stingray
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Dunnis, you don't know what you're talking about. We couldn't teach you even the basics of an entire field of research on a message board. Your claimed "mastery" of numerical modeling is irrelevant. It has very little to do with this problem, and you refuse to accept that. Your criticisms of others' work is also silly. I am done responding to your rudeness.
 
  • #55
ZapperZ
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This thread is going nowhere fast. It is done.

Zz.
 

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