Annon Posted November 9, 2012 Share Posted November 9, 2012 Just having a play around in DOPs. I've been using a lot of GAS nodes recently so thought I'd start building up a smoke sim from scratch, just to further my understanding of it. But I hit amateur hour and can't get out of it! I just wanted to add density and temperature, add bouyancy to velocity from temp and advect density by it. For some reason temperature advects, although it disappears outside of the density bound. And density doesn't advect at all. What am I missing here? Christian basicSmokeSim.hip Quote Link to comment Share on other sites More sharing options...
Filipp Elizarov Posted November 9, 2012 Share Posted November 9, 2012 I think you just need to add some velocity to your scene.I think my file will help you. And first of all you need to create velocity self advection - advect vel by vel , because in real life Air flows are always moving . basicSmokeSim.hipnc Quote Link to comment Share on other sites More sharing options...
ikarus Posted November 9, 2012 Share Posted November 9, 2012 Just having a play around in DOPs. I've been using a lot of GAS nodes recently so thought I'd start building up a smoke sim from scratch, just to further my understanding of it. But I hit amateur hour and can't get out of it! I just wanted to add density and temperature, add bouyancy to velocity from temp and advect density by it. For some reason temperature advects, although it disappears outside of the density bound. And density doesn't advect at all. What am I missing here? Christian you're missing the most important step in the fluid solve, projection. fluid solve = advection + forces + projection/incompressibility add a gas project node and your fluid works fine Quote Link to comment Share on other sites More sharing options...
Annon Posted November 12, 2012 Author Share Posted November 12, 2012 Ahh thanks guys, I'd missed the posts, thought no-one had replied yet. Will Look at it tonight if I can... Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.