In article ,
"Jason Who" wrote:

snip

I do think however that there might be a little too much astronomy in the
project for me, seing that I need to focus somewhat more on the computer
science part of it, so I was hoping for an model of astronomical phenomena
which was in itself simple, but which were perhaps hard to implement and
test numerically.

You may be interested in the MilkyWay@home project at Rensselaer
Polytechnic, New York:

http://milkyway.cs.rpi.edu/milkyway/

They're collaborating with volunteers on the programming, so their
(GPL'd) source code is available -- there should be a link in a message
from an administrator somewhere in the forums.

--
Odysseus