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Questions tagged [smoke-simulation]

Questions pertaining to Blender's built-in smoke simulator.

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1
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0answers
15 views

Cycles checkerboard pattern only on GPU [closed]

I am trying to render a short smoke scene using cycles. Everything works fine (even if slowly) when I am using the CPU, as shwon below. However, when I try using my GPU, it looks like some parts of ...
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1answer
19 views

Smoke from ship's chimney Smoke should move with the ship

I want the smoke from the chimney to move along with the ship. With "Copy Location" and "Offset" checked, I can position it accordingly and the smoke goes with it. Now I would like ...
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0answers
18 views

How do I correctly overlap liquid+smoke domains?

I have a fire & smoke domain and a liquid domain, with the latter positioned within the former (see the image below). The F&S domain is active before the liquid domain - the latter is ...
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0answers
18 views

Open VDB files not working in Blender 3.0 [closed]

I'm using Blender 3.0.0 alpha cyclesX. And when I import Open VDB files they show up as black boxes, the files work on other versions of blender but just not this one.
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1answer
34 views

There is no smoke in render view instead it scatters outside the domain in blender 2.9 Eevee render

I started to make smoke simulation, I saw some tutorials to do that. I can see the smoke in solid view but not in render view instead I can see the color of the smoke outside the domain. I did this ...
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0answers
7 views

What does the “flow” setting in turbulence field do?

Force fields, including turbulence, have a 'flow' setting. What does it do exactly? I've read it "converts the force into air flow", but what does that mean in concrete terms?
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17 views

Smoke+fire simulation render stripe artifacts

Blender 2.83 LTS cycles After working on a nice explosion simulation and the shading, I notice in the render weird stripe-like appearances. I have looked around the internet but I couldn't find ...
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1answer
18 views

Find “Smoke” settings under Domain tab [duplicate]

I am following some basic tutorials of smoke simulations. And I always can't find the settings tab "smoke" under the smoke domain settings. I jumped through some tutorials to see if I am ...
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0answers
46 views

How can I fix super slow smoke rising?

I have been struggling with this for quite some time. In the 2.9 changelogs I found that the fluid simulation's gravity now matches the scene's gravity (which in my case doesn't really matter since ...
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0answers
10 views

Copy fluid settings from one object to another?

I'm making a smoke simulation and have edited the settings of the smoke "flow" mesh, but now I would like to replace this mesh for a different one, but without losing the flow settings. Is ...
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0answers
33 views

Smoke domain position problem in solid mode but not in render mode Blender 2.92

I have a weird problem, when I make smoke in solid mode appears in another place. But in render mode it is in the correct place. I was searching everywhere but I did't find anything about it. All is ...
1
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1answer
20 views

Volumetric error when rendering mantaflow fire simulation

so I've been working on honing my fire-simulation skills in the Cycles renderer using Mantaflow as I'm set to be using it soon for a project; but while working on looks and so on, I noticed a render ...
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1answer
26 views

Smoke domain causes artefacts in non-density areas

I get strange artefacts from the smoke domain where density should be zero but the domain box is over other collision objects in cycles (Blender 2.92 and 2.93 beta). Res seems high enough. For some ...
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0answers
6 views

How to delete automatically old smoke simulations of a smoke domain and not store old ones

I'm doing a lot of bakings of a smoke simulation with different parameters and everytime that I bake a new one a new file with the data of the simulation is created. Each of them is around 150 Mb... ...
0
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1answer
16 views

Can I slow down my entire animation with particles?

My animation has particles and keyframe animations in it. I really like how it looks right now, but I want it to play out slower while retaining 24 fps. It seems that Time Remapping only affects ...
0
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1answer
15 views

Weird stuffs in smoke + fire sim

So, i've been messing around with this project for a solid total of 10+ hours. And i still can't figure out why the fire is so weird. It has this bobbly blocky thing even in "decent" ...
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0answers
23 views

Cycles Fire + smoke png renders save empty

I am rendering 2 different fire + smoke simulations with seemingly the exact same settings. One saves to PNG with alpha perfectly. The other seems to render properly but the saved png is blank. After ...
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0answers
29 views

blender fails to render certain tiles — is there some threshold i've exceeded?

I've been exploring the quick smoke simulation in Blender 2.92.0 and I have a particular quick-flash explosion working quite nicely, except blender fails to render some tiles, leaving them gray in the ...
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0answers
21 views

Smoke looks blurry

So I am working on a project for school, using smoke with different colours to present a different kind of gases. I was new to Blender, and I spent some time learning to. I was doing a simple tryout ...
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0answers
17 views

Gas simulator with pixels

I have a very big problem in my gas simulation, whenever I make the bake, in the first sequences (0 - 30) the smoke looks like very large pixels and not sharpness. I thought about increasing the ...
1
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1answer
47 views

eevee smoke/volume not being occluded

Been touching upon EEvEE every so often depending on what kind of image quality I'm looking for at the moment, and for the first time I am adding smoke. More specifically Glowing Smoke, as in "...
0
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0answers
32 views

Cycles takes an abnormally long time to render

I'm rendering an image in my animation using cycles to test out how long it will take to render a frame but it's been five minutes and blender hasn't even started on the first pixel. I know that this ...
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0answers
17 views

Problem adding a smoke flow modifier with python

I have the following code that turns a named object into smoke emitter that turns off and on at specified frames: ...
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0answers
9 views

Smoke simulation (manta) goes wild when I add wind

I wanted to add some wind to the smoke so it does move a bit sideways. It did work before but now the volume pixels in the domain just go crazy. (see pic) Maybe you can help to fix
0
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1answer
106 views

Blender 2.92 Fluid / Gas simulation not working

I'm using Blender 2.92. Now I'm trying to simulate some fluids and gases, but it seems that I'm not ready for these. I've succeeded setting a simple fluid scene (just a cube domain and a cube inflow), ...
2
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1answer
45 views

Improved explosion: possible to nest smoke domains and apply them to mutually exclusive emitters?

I've been following an explosion tutorial. Blender's quick smoke results are very impressive but I'm trying to mimic artillery explosions I've seen on youtube in several places. In particular, I've ...
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0answers
17 views

Smoke simulation not updating when in Replay cache mode

I have just started my journey into the world of smoke simulations in our dear Blender and it is not starting very well hhhh My setup is simple. A uv sphere on which i applied the quick smoke effect. ...
1
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0answers
44 views

blender crashed twice during long render, how to detect and remedy reason for crash?

I am brand new to Blender. I'm running Blender 2.8 on Ubuntu 20.04. I've been working through an explosion tutorial. I have a simple-but-glorious explosion using only a single emitter and I've been ...
0
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1answer
34 views

Smoke isn't rendering in cycles 2.92

I was trying to make a smoke sim but noticed after baking that the smoke doesn't render, the sim shows up in wireframe view. Any help? [https://pasteall.org/blend/0cc1f3837ff24ccaa43e8c4e6ee1c080](....
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0answers
17 views

Why no color in my explosion? And why doesn't cycles or eevee render smoke? Rendering problems Ubuntu 20.04/blender 2.8 or 2.9

I've been following this explosion tutorial. While I've managed to get a pretty great-looking explosion shape, it's just grayscale -- no color, even though I'm certain I've followed the shader edits ...
0
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1answer
15 views

Smoke sim does not render

The smoke sim I made shows up in every viewport besides render, and it does not show up when I render image. I tried recreating the flow and domain, switching cycles to evee and back. https://pasteall....
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1answer
7 views

Smoke Generation “Unpaired” from Object / Broken Quick Effect Smoke

So I am trying to use blenders quick effect smoke but I am stopped every time I try because the smoke gen isn't sticking with the object I am using. I have tried following tutorials, but this doesn't ...
0
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1answer
77 views

More smoke and smoke colour

The standard answer for smoke colour in Blender >2.8 is to write "color" in the "Color Attribute" field in the principled volume node. But this seems to have no effect. Also ...
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0answers
12 views

Explosion is bigger in the render, than in the rendered viewport

I'm making a test explosion for fun. It includes motion tracking and a explosion simulation. In the Rendered viewport it looks exactly how I want it too! However, when I render the image, it looks ...
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0answers
10 views

White and black pixels when rendering on certain frames

I have this issue where I am rendering in cycles and on certain frames there are black and white pixels where there shouldnt be. It looks like it is confined to the smoke domain I have set there but ...
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0answers
14 views

My smoke render (cycles) looks a lot worse than in viewport

This is how my smoke simulation looks on render... More like transparent water... This image is from the viewport. There it has nice puffs. Why are they disapearing in render? Here are the settings:
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0answers
31 views

Smoke artifacts in render

I have a strange issue rendering with Cycles. These are some rendered images: As you can see there is a change in color/light around smoke and expand with smoke. Based on similar problems I've read, ...
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0answers
24 views

Smoke emit from particle initial velocity not working

I have been following this tutorial on making explosion effects. But the initial velocity does not work at all for some reason .blend
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0answers
26 views

How do I make Mantaflow fire appear less blocky and more realistic?

The other objects in the scene are set to fire and smoke with sampling sub steps set to 2 and initial velocity turned on, but other than that, they are at the default settings. I'm also using the ...
0
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2answers
84 views

Smoke Effect Colors Overly Dark and Gray When Rendering with Cycles or Eevee in Blender 2.92

I tried to make a multi colored smoke effect because it looks cool. Unfortunately, this feature only seems to work with Workbench Render Engine while in wireframe view. Indeed, once I try to render ...
0
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1answer
19 views

Using quick smoke cannot change from smoke to fire

When I use quick effects -> quick smoke to create my domain and stuff for me, I have had trouble if I made a mistake as to wether I wanted smoke or fire, and then tried to change it later. Once it ...
5
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2answers
576 views

Mantaflow: bake always crashes, cannot be resumed

I have problems baking a smoke simulation with Mantaflow, I tried Blender 2.92 and 2.93 Alpha. When baking a (not very complex) simulation, Blender always crashes at around 30% of a 250 frames ...
0
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3answers
84 views

How do I get the fire to show up for the mantaflow fire and smoke effect in Blender 2.92?

after setting up the explosion and smoke on my objects, then baking them, I am not seeing the fire that supposed to be there. The domain is set to gas and the objects are set to fire and smoke. The ...
0
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0answers
28 views

Is there any shortcut to recalculate smoke/fluid simulations?

While working with smoke/liquid, I often have to go to cache and press "Is Resumable" twice in order for parameter changes to update the simulation (the workaround I found so far). Is there ...
0
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1answer
25 views

How do i have my fire simulation have a better framerate/ quality?

I'm relatively new to blender, so I do not know entirely how to use it. I followed a fire simulation tutorial to a tea, however my frames would only go to 8 frames per second and the quality of the ...
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0answers
14 views

smokefluid simulation without “quick smoke” does not work

I made two simulations: One with quick smoke that works fine in rendering (left) and one where I manually made a fluid-domain and a fluid-inflow object (right). Both work in solid view but only the ...
1
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1answer
67 views

The smoke domain is completely filled with smoke

The domain is filled with smoke before the simulation started.
0
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1answer
47 views

Baked data 'not exact since frame -1'

When I set simulations(tried smoke, rigid body, hair dynamics, and cloth so far) to start at negative frames, I always get this message above the bake buttons: There's also a gap in the bar on the ...
0
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1answer
163 views

2.92 Fire & Smoke Definition

Using 2.92, trying to work on outdated tutorials and struggling. I have my subdivisions set at 1052 so there’s no reason for the fire and smoke to be blurry, but it still is. There’s no colour mapping ...
0
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0answers
25 views

Quick smoke not working

I was just trying to add some smoke to a scene I made (I'm fairly new to blender and 3D), following a tutorial (then another one saying the same thing), but it doesn't seem to work the way it should. ...

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