Sister blog of Physicists of the Caribbean. Shorter, more focused posts specialising in astronomy and data visualisation.

Monday 1 February 2016

Discs aren't supposed to grow tentacles, but this one does


More fun with viewing galaxy simulations with particle trails.

This time the disc of gas has temperature, so it doesn't collapse. In fact it's hot enough that the gas expands and the thing slowly dissipates. Something went funky when I tried to restrict the particle selection though, so for completely unknown reasons this only shows the particles leaving the disc vertically. I have no idea why that happened but it looks nice. In actuality the particles expand in all directions.
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2 comments:

  1. Jack Martinelli1 February 2016 at 20:43

    I like simulations too.   I did a gravitational sim, but when I get to about n=400 you start to see the frame time getting all choppy.  One of these days I'll add in an octree.  And move my code to my GPU.

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  2. Rhys Taylor1 February 2016 at 21:00

    I'm mainly an observer but people here insist I do simulations, so I try...

    Years ago I wrote a numerical two-body code in BASIC. It was a horrible mess of GOTO loops but it was fun to watch things spiral around each other. I never figured out how to extend it to more particles. Fortunately for me, the code I'm using now has been developed by cleverer people.

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