Raymond Chua Posted July 22, 2010 Share Posted July 22, 2010 Hi guys, I am trying to create a flamethrower effect in Houdini but so far I cant achieve the look I want. I am aiming for something like this: http://speffects.com/images/postings/flamethrower1.mp4 Currently I use a particle system to flow out and drive the fluids, in this case I use pryo. But somehow, I cant achieve the flamy effect and the last burst of flames in the end. I have attached a scene file which might not be helpful I think. Would really appreciate some help. Thanks. =) Regards, Ray FlamesTest_v006.hipnc Quote Link to comment Share on other sites More sharing options...
Raymond Chua Posted July 23, 2010 Author Share Posted July 23, 2010 Anyone, please? Quote Link to comment Share on other sites More sharing options...
Ungoliant Posted July 23, 2010 Share Posted July 23, 2010 Anyone, please? please, upload a preview of your scene Quote Link to comment Share on other sites More sharing options...
Ratman Posted July 23, 2010 Share Posted July 23, 2010 Haven't looked into your scene, but make sure your particles die out and fade out their volume emission. And also turn on point and volume collision on the solver, and make the particles be a collision object itself, that adds some nice detail. Been setting something like this myself, but haven't updated it in a few days, I'll look into it this weekend. Quote Link to comment Share on other sites More sharing options...
Raymond Chua Posted July 26, 2010 Author Share Posted July 26, 2010 Hi, Thanks for the reply! I have not gotten any good results with the particles driving the fluids, not sure why. I have been playing around pyro fluids though but still far away. So far I am only simulating the fire as I want to get the solve right before I move on to smoke. Here are some Quicktimes. Any tips will be very grateful! Ratman: If you achieve something with the particles, please let me know! Regards, Ray flamethrower_TEST_v001.mov flamethrower_TEST_v002.mov Quote Link to comment Share on other sites More sharing options...
Raymond Chua Posted July 27, 2010 Author Share Posted July 27, 2010 I happened to saw this video, which the artist used fumefx. Flamethrower Anyone can give some insights on how create something like this in houdini? Regards, Ray Quote Link to comment Share on other sites More sharing options...
Akabane Posted July 28, 2010 Share Posted July 28, 2010 (edited) I'll just throw in a couple things having seen your sims (but not your file, I'm at work now) I'll take as example the second mov since it's better than the first. It seems you already accomplished the pyro taking the velocity of the particles, and that's cool. The problem is that you actually have a "tongue" of fire, that extinguishes and tapers at the end. One of the easiest ways to solve this is to set a little diffusion on the temperature (i suppose you're using that for the fire) and put the vortex confinement higher (something like 4 or 5 could do the trick). You can also try to use fuel combustion to achieve the smoke, but make sure you have really, really little gas emission (because otherwise the fluid will "explode" augmenting the occupied space) and adjust the soot emission accordingly. If I have time this week i'll try to put something on for ya. Cheers, Emanuele EDIT: And yeah, it is slow, speed up the particles! Edited July 28, 2010 by Akabane Quote Link to comment Share on other sites More sharing options...
Raymond Chua Posted July 29, 2010 Author Share Posted July 29, 2010 I'll just throw in a couple things having seen your sims (but not your file, I'm at work now) I'll take as example the second mov since it's better than the first. It seems you already accomplished the pyro taking the velocity of the particles, and that's cool. The problem is that you actually have a "tongue" of fire, that extinguishes and tapers at the end. One of the easiest ways to solve this is to set a little diffusion on the temperature (i suppose you're using that for the fire) and put the vortex confinement higher (something like 4 or 5 could do the trick). You can also try to use fuel combustion to achieve the smoke, but make sure you have really, really little gas emission (because otherwise the fluid will "explode" augmenting the occupied space) and adjust the soot emission accordingly. If I have time this week i'll try to put something on for ya. Cheers, Emanuele EDIT: And yeah, it is slow, speed up the particles! Thanks for your comments. For the sim you are looking, there is no particles as I can't seem to get it done correctly. I am just wondering if there is a way to make the fire turn into smoke when it dies off and then slowly vanish into the air? Regards, Ray Quote Link to comment Share on other sites More sharing options...
goshone Posted July 29, 2010 Share Posted July 29, 2010 here is some more great reference of a flamethrower filmed at high speed.... Quote Link to comment Share on other sites More sharing options...
jmpr Posted August 3, 2010 Share Posted August 3, 2010 The file is was talking about http://dl.dropbox.com/u/6721557/flamethrower.hip Good Luck Jens Quote Link to comment Share on other sites More sharing options...
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