nigelgardiner Posted September 14, 2016 Share Posted September 14, 2016 Hi There Does anybody know if I can overlap velocity volumes, merging them before piping into the fluid solver and expect an additive result? cheers Nigel. Quote Link to comment Share on other sites More sharing options...
celd Posted September 14, 2016 Share Posted September 14, 2016 you could always import them into the simulation through 2 different source volume dops, and set volume operation to add Quote Link to comment Share on other sites More sharing options...
nigelgardiner Posted September 14, 2016 Author Share Posted September 14, 2016 yeah that's what i was meaning sorry, bad explanation, so i'd merge all the volumes together with velocity volume set to add in the source volumes? and also what do initialize the source volume as if it's a velocity volume? does it matter? thanks for replying, much appreciated. Quote Link to comment Share on other sites More sharing options...
celd Posted September 14, 2016 Share Posted September 14, 2016 (edited) I assume you have multiple velocity fields on the sop level: for all of them to be added into the simulation, you create Source Volume in the dop network for each of them, then plug them into a merge node and finally into the solver the "add" option means your volume which you are sourcing, will be added into a simulation field. "vel" in your case. if it was set to "copy" , it would instead overwrite the current simulated "vel" field the initialiaze option simply holds presets how the Source Volume dop can be set up. changing it to "source fluid" should give you what you need. you may want to look into the "SOP to DOP bindings" tab, that's where it shows you which simulation "fields" will your "volumes" be combined with Edited September 14, 2016 by celd Quote Link to comment Share on other sites More sharing options...
nigelgardiner Posted September 14, 2016 Author Share Posted September 14, 2016 Hi Sorry, If you have time.. Would you mind having a quick look to see if you can see where I'm going wrong, I'm slightly stumped. I created a velocity volume from a curve and then fed it into the solver but wierd things happen. new splash 01.hiplc Quote Link to comment Share on other sites More sharing options...
nigelgardiner Posted September 14, 2016 Author Share Posted September 14, 2016 ok, i've got it working but i don't understand why the fluid particles just sit around at the end of the volume once they've passed thru it, i thought they would've travelled thru and fallen down under gravity on the other side? new splash 01.hiplc Quote Link to comment Share on other sites More sharing options...
nigelgardiner Posted September 14, 2016 Author Share Posted September 14, 2016 oops it doesn't really work properly at all.. Quote Link to comment Share on other sites More sharing options...
celd Posted September 14, 2016 Share Posted September 14, 2016 (edited) Sorry I assumed you were using smoke solver, anyway, go to the Masks tab on Source Volume dop and remove the velocity mask, that should fix it Edited September 14, 2016 by celd Quote Link to comment Share on other sites More sharing options...
nigelgardiner Posted September 14, 2016 Author Share Posted September 14, 2016 nope, very strange, they still hit a break wall and gather at the end of the velocity volume. no biggie, i can keyframe the volume off i guess but it'd be nice to know why they're doing. anyway enough for today, brain frazzle taking over. thanks for your help. Quote Link to comment Share on other sites More sharing options...
celd Posted September 14, 2016 Share Posted September 14, 2016 seems to be working for me? new splash 02.hiplc Quote Link to comment Share on other sites More sharing options...
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