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Showing results for tags 'temperature'.
Found 10 results
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At 13:52, this video briefly glosses over using simple geometry to add temperature to a specific area of an explosion: This is pretty much exactly what I want to achieve. The setup looks simple enough, except for an attribute wrangle where he doesn't show what's happening. Does anyone have any idea how he might be doing this? (Any other methods are welcome too!)
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Hello, I am following a few tutorials on how to make an explosion/fire. Some of them use the attribute burn and others use fuel. Can I please know if there is any difference between the two? Thank you very much.
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Hey, So i im having this small issue where I think the fuel? is showing in the render and it is ruining my pyro sim to look like a clean flame. I have density turned off, so there is no smoke and temp and heat are the only attributes being used in the material node. I'm assuming fuel is the source of the issue and it is being rendered through heat. Any ideas on how I can remove that small cloudy emission on top of the flame (in the picture below), in the video you can see it in the middle of the flame, you can see it on the 2nd and 3rd one but it doesn't seem to appear on the the black body one (1st one) It seems to only happen when I use the ramp to colour the flame
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Hi magicians, I was trying to create render passes for the fire, I want my temperature and fuel to be render as different render passes, I tried to use temperature and fuel as float in extra render images, but the problem is that, I am not been able to get it properly. what is the way to get render passes for temperature, fuel and heat in extra image details ? I would also like to know the way to render normal passes and any other passes which can be rendered out from volume, like opacity pass or something helpful in compositing. I get the fire mask from the shader but it is not that useful. Thank you. -
Hello ! I'm trying to add temperature to a flip sim, but it doesn't seem to work well... I have bubbles going through the particles and affecting them with their velocity, but the temperature doesn't seem to be added. Each of these bubbles/strands/thingy are supposed to be white. The bubbles are converted to a VDB, with wich I specify to transfer vel and temperature (temperature's been set to a static float value prior to it). Scene included below. Thanks ! temperature_flip_test.hipnc
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Hello,I'm trying to recreate the melting effect using microsolvers as seen in this video..https://www.youtube.com/watch?time_continue=8&v=KIcpzPK3b1g [www.youtube.com]Any tips or advice on how to get started with this would help greatly!Thanks
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Hi, I would like to convert an rgb color value of an attribute at points to temperature (kelvin). I am wondering if anyone is aware of any algorithm related to that. cheers, C
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Hello! I'm encountering a little problem with Pyro Fx. When I export a geo file from any fire, the attributes of heat, temperature and fuel look good in the viewport but when I render them, I get a particles cube. It seems that those attributes are not exported in my bgeo files (I tried with Vdb files and got the same result). Is it a bug or is there a step that I missed in the export? Thank you!
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Hello everyone! I need temperature values render pass for some post compositing purposes from Pyro simulation. When I'm rendering it as "temperature" float 32 pass, I'm receiving negative values near the borders of volume. Why does it happening? Attaching picture. I can normalize this somehow after render, but I want to now why it is that way. There is dead end node "Fit Range Unclamped"(picture attached) in default shader(Fireball in this case). I can pass "temperature" parameter through some "fit ranges" or even "Reshape" node. But it doesn't answering the question Why? And I don't think that is the right way. Should say that remapping from shader tab from shades hasn't worked properly for me - even with clamping and fit set for 0 - 1 there was negative values and values bigger than 1. Basically, I need normalized (from 0 to 1) temperature render pass for my simulation. Maybe someone can help my with this? Will be much appreciate. Attaching 2 screenshots. Don't attaching .hip file because there is a simple sphere with Pyro Explosion shelf preset on it. P.S. Don't want to make another post right now, so should ask - is anybody know proper way to make a vectorfield texture from Pyro Sim in Houdini? Right now I'm using Volume Slice, rendering remapped normalized (from 0 to 1) motion vector pass from top orthographic view and compositing it in kind of flipbook, which is converted into volume texture dds next. Maybe there is another way to do it?
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candle_001.avi Hi, I'm trying to setup a candle melting in houdini using Flip with variable viscosity but I'm facing a couple of issues. The cold wax has a viscosity of 1.10^6 whereas the hot wax has a viscosity of 10. First issue: my hot wax always drags the cold one, how can I litteraly freeze the cold wax? I also would like the wax to be slightly pushed toward the center of the scene to always slide against the candle. But applying such force makes the wax go up due to the contraction (don't know if I make sence). Is there a way to aply force to a specific area ? I don't know how to use "mask field", and can't acces the exemple in the doc :/. Is It possible to do something like that: "If temp>50 + 5F then apply force" meaning waiting 5F after the temperature reaches the desired treshold to apply the force? I also would like to kill some particles like 20% when they reach a temperature treshold, how can I do such effect in dop ? sop? pop ? I have absolutly no clue. Then for the fire "room" (right next to the flame) I would like to use a vdb combine in substract but can't make it work « more A grids than B grids », can you enlighten me ? And last but not least I have some collisin issues with the chandelier, I might not be using the correct method. Once again what is the best way to you to get clean collisions? Thank you for your help candle.zip
