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Found 418 results

  1. Hi all! There's 1 week left to register for my Mastering Destruction 8-week class on CGMA! In supplemental videos and live sessions we'll be focusing on some of the awesome new features in Houdini 18, and exploring anything else you might be interested in, such as vehicle destruction. For those that haven't seen me post before, I'm an FX Lead at DNEG, and previously worked at ILM / Blue Sky / Tippett. Destruction is my specialty, with some highlights including Pacific Rim 2, Transformers, Jurassic World, and Marvel projects. I've also done presentations for SideFX at FMX/SIGGRAPH/etc, which are available on their Vimeo page. If you have any questions, feel free to ask or drop me a message! https://www.cgmasteracademy.com/courses/25-mastering-destruction-in-houdini https://vimeo.com/keithkamholz/cgma-destruction
  2. Hy there, i dont see my pyro source after rasterizing a very small scale box (0.02). Sim is working but i wanna see my source volume. is it some kind of visualizing problem?
  3. Ignition Temp Scale Field

    Is there any way to scale the ignition temperature with a field such to simulate different material combustion properties within a single pyro solver? I tried looking into how the Ignition Temperature parameter is implemented, but I only got as far as as the GAS Combustion DOP node and the trail seemed to go cold.
  4. Hi, I'm trying to use a pyro sim to make some realistic clouds and to get the effect I want I need varying levels of dissipation, turbulence, and disturbance at different heights. I've set up some scalar fields and made a gas wrangle to have the gradients I want set up but I can't manage to get them to properly affect the gas nodes. CloudSimming.hip
  5. pyro not straight?

    hey guys i just created explosion and why my pyro arent moving up straight? already out bouyancy on Y axis but it still goes to the right side. anyone can help me solve this problem?
  6. Bouncing Pyro Flame

    Hello everyone I created a campfire for a project. However, I find myself with a bounce effect at the beginning of the video. I don’t know if you have an idea ? https://youtu.be/mBwlIlFspxk
  7. Splitting volumes after pyro sim

    Hi, I am creating a scene that is on fire where at one point an explosion happens. I did this by creating a different source for the explosion, giving it more divergence, temperature,.... However since they are merged and both sourced into the same pyro solver (at SOP level, Houdini 18), this is difficult for shading. Since the explosion is way hotter, the temperature scale etc... needs to be different for the explosion. I have thought of just simulating them both seperately but they influence each other so that is not really an option and since it is pretty HQ, it will probably take way longer too. The same basic question has been asked and answered as well: but I have fire and heat and burn and flame fields, so just copying the density fields to different custom fields doesn't work, at least when I tried,... Also the solver is on SOP level in my case because it's easier and that also changes stuff I thin. If you could help me with this I would be eternally grateful! Thanks in advance, Thoran Slock
  8. FLIP-Pyro Interaction Tutorial

    Hey folks - long time lurker joining the party with a tutorial showing a workflow for integrating the FLIP and pyro solvers, allowing for bidirectional interactions. I cover a few other tips and tricks along the way, so I hope you find it useful! Hip file attached (and linked through from the video). flippyro_diffusefx.hiplc
  9. Rocket launch pyro test

    First post here for feedback and direction, this mostly a test render for my first big pyro simulation. It's being driven by a pop system that's firing particles downwards and using that to drive a pyro simulation. The collisions for the simulation are pretty broken, please ignore those. One thing that I'm having trouble with is getting the outside plumes of smokes to rise higher, anyone got suggestions? Sequence_1_v01_-_converted_with_Clipchamp.mp4
  10. pyro smoke issue

    hi I have a problem with smoke upres sim. it's normal when I cache lowres. but when I use upres to sim. the result is weird. the smoke has been cut into quarter after few frames. don't know if anyone has the same experience. I tried to solve it with change my bounding parameter setting. but nothing going good..... ( maybe the problem not from bounding box, because the bounding range in normal in the viewport. not sure....) the video and pics attached. issue_1.mov
  11. new pyro solver

    hello, Has anyone here had a chance to use the new pyro solver/the new combustion model with flame/burn? seems really difficult to actually get microsolvers (turbulence, disturb, shred) to actually affect the flame field in a way that looks decent. I noticed that I was cranking values really high just do anything at all to the flame field. It almost seems like its not working properly. As soon as I try same micro solvers on just density (smoke sim), it works fine. It just seems like the flame field doesn't work properly. Thanks
  12. Houdini pyro fire simulation

    Hi, I have tried may different options in the sim, still i'm getting the blur flames on the scene... i'm new to houdini pyro the hip file is attatched to this Thank you test.hip
  13. Rocket Launch Sparse Pyro

    Heya, First post here and still pretty new to Houdini having only worked with SOPs before Am trying to make a rocket launch sequence using the new Sparse Fireblast Pyro tool in H18. Kind of like the one they just showed off: I've tried to get as far as I can scouring through the internet, but have hit a wall. I have a couple questions and would love some general critique if anything else can be improved. 1. Is the Fireball tool even the right one to use for an effect like this? 2. How can I make my pyro emitter last longer? So the fire and smoke continues to blast out as it lifts off and it doesn't just end after 20 odd frames? 3. Is there a special way to light the smoke from the flames? 4. How does the smoke rise to the sides like that? Mine just blows out horizontally and dissipates. Thanks for any help you can give. launch_pyro_test.hipnc
  14. When I add volume visualization node, and click on the blue display flag of the node, the smoke is no longer visible. Any idea?
  15. Nuke Explosion

    hi guys I've been tasked with creating a nuclear explosion for a current project to match this reference: been having lots of issues matching the kind of skirt of the pyro (the bit under the head of the explosion), I was wondering if you have had any tips or tricks. I would really appreciate any help. Thanks all!!
  16. Computational Fluid Dynamics

    Hey guys, im looking to step up my pyro/fluid understanding and study Computational Fluid Dynamics (CFD) since i already got an engineering background. My question, is CFD preferable to learn for computing simulations in houdini? Or maybe another branch of fluid calculations that i know not of? Thanks.
  17. Rest popup problem

    I have a problem with the rest field. When I tried to render just popup on every 20 frames which is Frames Between Solves settings on PyroSolver. The simulation starts at 4. frame so I paste that value from dop network node to pyro solver in frame offset as a relative reference. In addition, I attached settings images and flipbook video I appreciate any help! rest problem.mp4
  18. 32GB Ram 3200mhz ryzen 5 1600 Hi again guys. Basically I have been struggling a lot with cacheing a simulation. I´ve tried .bgeo .sim and multiple resolutions on the pyro I would hate to keep lowering the res because of ram issues. I diseabled "Cache Simulation" and I still keep on feeling my Cache. I dont mind waiting days for the cache if necesary (it is a big simulation, probably 40 meters long I guess) and to be honest, I might not know in depth how to control pyros. Hopefully you can help me here
  19. Hi, I am specialized in Houdini FX, Simulations (flip, pyro, RBD Bullet), VEX and Python scripting also a good experience in lighting and compositing. Currently based in Shenzhen, China. you can checkout my vimeo for my work and contact me on LinkedIn. Available for freelance/full-time Houdini FX work and Houdini pipeline development. Thanks, Mahesh MS. vimeo: https://vimeo.com/maxcolor/ LinkedIn: https://www.linkedin.com/in/maxcolor/ email: msmahesh@live.com
  20. Hello! So I have been Having lots of problems to setup the pyro sim on a large scale. Somehow I cant manage to understand the propper settings. I would love a result similar to this: The size of the my sim is 1:10th of the real size because as I make the sim bigger the problems also get bigger. I guess it has something to do with the source density and the smoke object Take a look on how awful it looks down below (I am quite new to this soft) I am leaving the whole proyect full of notes so you have an easy time helping me Thanks a lot and I am looking forward to learning. cya NaveVolando.rar
  21. Hello! So I have been Having lots of problems to setup the pyro sim on a large scale. Somehow I cant manage to understand the propper settings. I would love a result similar to this: The size of the my sim is 1:10th of the real size because as I make the sim bigger the problems also get bigger. I guess it has something to do with the source density and the smoke object Take a look on how awful it looks down below (I am quite new to this soft) I am leaving the whole proyect full of notes so you have an easy time helping me Thanks a lot and I am looking forward to learning. cya NaveVolando.rar
  22. Vellum and Pyro - Two way Interaction

    Any ideas on how to make the smoke influence the cloth sphere while the sphere influence the smoke? Scene file is attached. Thx Any RnD_0100.hip
  23. Explosion timing methods?

    Hi all, Going to get straight to my point here. I've been trying to wrap my head around a proper workflow for achieving good timings explosion and smoke simulations. Let's say in this example explosion , the look and the timings are great. My ideas are either having proper advection methods, using animated divergence, injecting high velocities for first few frames and then using drag to slow it down or (last idea I had today) using Time Warp node, to retime the whole explosion caches to your preferred look. Could someone experienced enough drop a few lines around what the approach of an FX artist is whilst tackling a explosion in a shot for a film or just in general. Am I going down the right path with these methods or is it completely off? Thanks
  24. How to drive smoke and blend shape

    Hi guys, I'm trying to remake this effect. I get the pyro source scatter by the Cd of the map, but dont know how to drive the pyro and blend between 2 shape. Hope u guys help me Many thanks
  25. Ring pyro burst

    Hey guys, I have to make a pyro sim of a ring turning into a burst, and then follow a curve and get sucked. First thing I'm trying to discover is how to get the explosion following this reference: My first thought is having particles rotating and use that as density source with some disturbance and dissipation, on my first RD I used some particles exploding outwards but the result isnt there: Any ideas to get to the explosion on the reference? and if there are ideas for the next step > follow curve and dissolve on left, more than welcome. Thanks!
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