ntkirby Posted August 17, 2013 Share Posted August 17, 2013 hi all, I have an issue in Houdini 12.5, I'm trying to use particles as a source for the pyro solver, regardless of if I create my own or use the shelf tool to source from particles, I can't seem to get them to emit properly. I've looked all around, forums, tutorials, etc Temperature field will emit/expand, but it doesn't seem to emit fuel. Any suggestions? file has been attached explosion.hipnc Quote Link to comment Share on other sites More sharing options...
mawi Posted August 17, 2013 Share Posted August 17, 2013 I dont see anything wrong. You got alot of fuel when looking at the visualization. Quote Link to comment Share on other sites More sharing options...
ntkirby Posted August 17, 2013 Author Share Posted August 17, 2013 Odd, when I look at the visualization I can't see any fuel...can't see density.. the only thing I can see is temperature and that's if I look at it inside the dop network... I'll look at it again Quote Link to comment Share on other sites More sharing options...
mawi Posted August 17, 2013 Share Posted August 17, 2013 (edited) Odd, when I look at the visualization I can't see any fuel...can't see density.. the only thing I can see is temperature and that's if I look at it inside the dop network... I'll look at it again Aha ok. Your viewport display is set to hidden line ghost or wireframe. Temperature displays as a colored geometry plane and thats why you only see that one... Set your display to flat shaded.. Edited August 17, 2013 by mawi Quote Link to comment Share on other sites More sharing options...
ntkirby Posted August 17, 2013 Author Share Posted August 17, 2013 There it is... thank you much I didn't even think of the simple things! Now to play around with it so a) doesn't go below ground level and doesn't look like a square! Quote Link to comment Share on other sites More sharing options...
ntkirby Posted August 17, 2013 Author Share Posted August 17, 2013 Ok its not emitting from all of the particles.... Quote Link to comment Share on other sites More sharing options...
Alexander Bong Posted August 18, 2013 Share Posted August 18, 2013 play with sample distance and point sample threshold in /obj/explosion/point_fuildsource until you get the desired fuel sampled from the points. if you have too much threshold, the lone particle out there will get culled. too little threshold, you get a "pixelated" looking fuel. or should i say "volexalted" Quote Link to comment Share on other sites More sharing options...
ntkirby Posted August 18, 2013 Author Share Posted August 18, 2013 I'm playing with the threshold but I'm missing something else...I have a lot of particles that are getting culled, playing with those settings did improve the scene, but something else is off. explosion.hipnc Quote Link to comment Share on other sites More sharing options...
mawi Posted August 18, 2013 Share Posted August 18, 2013 (edited) I'm playing with the threshold but I'm missing something else...I have a lot of particles that are getting culled, playing with those settings did improve the scene, but something else is off. Some of your particles are passing throu a area with a low value in the noise created by the the fluid source. Turn the noise off or work on the noise parameters. You are having a high element size that gives big "black holes".... Edited August 18, 2013 by mawi Quote Link to comment Share on other sites More sharing options...
mawi Posted August 18, 2013 Share Posted August 18, 2013 (edited) And for the down motion... The gravity is not excluded from the external force list. Put * ^Gravity (all but gravity) in the pyrosolver/advanced/External Forces/Scaled Forces. Edited August 18, 2013 by mawi 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.