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Found 7 results

  1. Hi all! Loads of cool stuff here. I'm looking for ideas/suggestions from Houdini veterans on how to recreate a process of melting or a differential erosion of the material. I have attached a screen cap of the closest example I've found in a video by Christoph Bader/Dominik Kolb called Area Contraction. Also attached a macro shot & GIF of my physical experiment of creating similar structures via melting. Sadly, I haven't been able to find any papers or simulation breakdown examples of Area Contraction or how to replicate it in Houdini. There are so many potential paths to take that I feel a bit lost - is it best to operate in volumes or VDBs? Or should I simply stick to particle solvers? FLIP liquid with attractors? FLIP liquid driven by temperature values (lava, snow, ice shelf tools)?
  2. Hi all! Loads of cool stuff here. I'm looking for ideas/suggestions from Houdini veterans on how to recreate a process of melting or a differential erosion of the material. I have attached a screen cap of the closest example I've found in a video by Christoph Bader/Dominik Kolb called Area Contraction. Also attached a macro shot & GIF of my physical experiment of creating similar structures via melting. Sadly, I haven't been able to find any papers or simulation breakdown examples of Area Contraction or how to replicate it in Houdini. There are so many potential paths to take that I feel a bit lost - is it best to operate in volumes or VDBs? Or should I simply stick to particle solvers? FLIP liquid with attractors? FLIP liquid driven by temperature values (lava, snow, ice shelf tools)?
  3. Melting/Tar simulation

    Hey Houdini gurus, I am trying to achieve this effect of a melting object. (video below) Do any of you lot have idea on how to approach this? My guess if flip fluid but how to get the stretchy and deforming part with it? Any help on this would be really appreciated. Regards, b
  4. Hey everyone! I`d appreciate if someone could give me a help on this. I`ve been doing a melting object and as it melts I have a popnetwork creating particles for my bubbles geo wherever the object is changing viscosity based on an attribute I created. To make sure the particles always stick to the surface I created a Ray Sop with the method set to Minimun Distance since Project Rays is not giving me any results. But I`m facing a problem with it since the particles don`t move with the deforming surface. I have attached a playblast to better illustrate my issue. Cheers! Bubbles.mp4
  5. hi there!! I've melted an object using flip fluid solver and I was wondering if there is a way to apply a "low" sim resolution to the "high" (original) mesh. In another project using vdb fracture I could be able to apply the low sim to the original mesh by connecting the original geometry into the second input of convert vdb node and checking "transfer surface attributes", but I don't know why this method doesn't works for me for my flip fluid simulation. If it helps in this video: https://vimeo.com/85149964 The person who upload it, comments this: "I cheated a bit by wrapping the low res simulation to my high res geometry " Can anyone help me?? Thanks!!!
  6. Melt some icecream

    Hi there, this is my first flip simulation in Houdini, so I guess there are a lot of things which I might handled wrong, but there is still "some" space to improve the sim and my knowledge. First of all, I want to melt some icecream. Right now I do have two different viscosity values applied to the sphere particles. This will be simulated later on, but for now it's fine with me for this test. I managed to melt the sphere in some way, though it looks wrong over time. Sometimes the particles hardly move at all, then they seem to float away, though I can't recall to have changed any settings via keyframes. Also with tension applied the particles start to roll in a wheel like manner. Since the outer particles "swim away", these particles will cause meshing problems, since they are too far apart from each other. In order to to force the flowing fluid to build drops and "real" shapes, I added surface tension, though this still seems to not solve the problems. Still particles are apart from the main mass and the strange behaviour (stop and go) continues. Since I want to simulate everything in real life scale the diameter of the sphere is about 0.05. I changed all corresponding parameters to my best knowledge, but am not sure if I did everything in the right way. The two videos demonstrate the current behaviour. The only difference is the enabled/disabled surface tension in the fluid emitter. What I need to do (no idea how yet) is to apply the tension only to the low viscosity particles. Probably with an attribute VOP? Any help is very much appreciated. Coming from SI ICE some things seem straight forward, but others impossible to solve. Best wishes and thanks for any input Tom iceCream_melting_001_a_0095.hiplc
  7. Melting Pagoda

    Hi there. I did a mini-project to practice variable viscosity FLIP fluids. I would like to revisit a couple of shots, but until I´m able to use the render farm at work, all my farm is my laptop. PBR in Mantra might not be the fastest thing ever, but the quality certainly is there. Also...I didn´t know 12.5 was about to get released! I would have saved some (preciousss) sim time! https://vimeo.com/61843919
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