Questions tagged [fluid-simulation]

Questions about the Fluid simulation systems in blender. Blender has two systems for simulating liquids, a SPH (Smoothed Particle Dynamics) system integrated with the particle system, and a Lattice Boltzmann method which can be used create a variety of simulations.

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16 views

How to make slime with procedural bubbles using Geometry Nodes?

I've just installed Blender 3.0 and it has renewed my curiosity for Geometry Nodes. I was thinking of what might be a fun use for Geom Nodes and the idea oozed into my head: SLIME! Because slime has ...
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How do I make clothes wet and dripping or stained with paint?

Good evening everyone, I have to make wet and dripping clothes from a water pipe and in another scene I have to make smeared them with some paint that fell on them, but I can't find a way to do it. ...
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10 views

Fluid simulation particles are offset from the effectors

Every time I simulate a fluid simulation in blender it always 'hovers' above the desired collision. I've tried applying the scale, I've also tried to set the normals to a smaller size but still no ...
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11 views

Fluid Simulation Cache Still Slow After Bake Issue

I'm making a smoke simulation and it seems to be no difference in viewport performance of the simulation between "Cache | Type: Replay" versus when it is fully baked "Cache | Type: All&...
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1answer
19 views

Fill Letter with Smoke - Smoke does not move

I want to fill a letter with smoke. The letter is the effector (Physics/Fluids) and inside the letter there is a cube as emitter (Quick Smoke). The letter has flipped normals so the smoke should stay ...
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34 views

How to stop liquid from spilling?

I have this small container right here and I poured some liquid in. The problem is, it keeps phasing out of the container, which is already made into an effector. How do I stop it from phasing? ...
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1answer
36 views

Smoke simulation not working

I am new to Blender and I am using blender 3.0 I am trying to make a smoke simulation by quick effects but the smoke simulation is not working and also I have a chimney which should work as a effector....
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16 views

fluid Simulation

I am trying to achieve this liquid simulation in blender: purple liquid passes through the each layer: the liquid becomes less and less when it passes through the each layer: can anyone please help ...
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Mantaflow Several flow source, one domain

I have several flow sources but one domain. I need liquid to flow out all 5 sources. I have set up the flow inflow settings on the flow sources. When I bake it, fluid only comes out of one source. ...
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22 views

Blender fluid simulation domain visible in viewport and render. (Blender 3.0.0)

My fluid simulations have the domain showing. Can anyone help me remove the domain so I just see the simulation. I have basic settings for my fluid sim, and have tried all basic solutions plus the ...
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1answer
41 views

Melting butter on pancakes and syrup

I would like the butter to keep more of it's square shape around the top, but have some melted around it, on the syrup. How would I adjust the settings to do this? I would also like to know if I can ...
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41 views

Simulate sedimentation of solids in fluid

I want to animate the sedimentation of two different (opaque) fractions from a (transparent) liquid. What is the best way to go about this? I want an end result that looks somewhat like centrifuged ...
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Fix smoke simulation in an animation

How can I fix this when trying to simulate fire+smoke in a dancing character? It looks like there are 5 arms, is there a way to create a smoother simulation when movement of the emitter is involved?
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Recreating Houdini Paint Smear in Blender using FLIP (Help!)

I saw this amazing Houdini tutorial the other day and was wondering If I was able to recreate it using Blender. https://www.youtube.com/watch?v=8TvAe3GxNFs&ab_channel=Entagma My results, however, ...
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19 views

How to predict fluid baking time?

Given the system environment (cpu, ram) and the .blend file, how could the baking time for a fluid domain be predicted?
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1answer
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Baked smoke domain jumps back to origin when being moved part 2

I have this project of a large scale environment, and I have the main character in front, and he's supposed to be holding a torch. I made the fire smoke domain, and got it baked. But it's at the world ...
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217 views

Water simulation (direction / pressure)

Do water simulations in Blender only go horizontal and down, or can you have water go vertically up from something like a fountain?
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16 views

Is it possible to bake physics parallel on multiple blender instances? [duplicate]

Example cpu with 8 cores animation with 16 frames one fluid physics domain It takes 32 seconds to bake the fluid physics cache frames 0 to 16 Can I decrease the baking time to 16 seconds by baking ...
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13 views

Working with fluid simulations / reset bake

When working with fluid simulations, are the only ways to reset the bake cache to either click the volume and change the resolution, or delete/change the cache file ? These are the only answers I can ...
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27 views

how to make an object float on water?

I watched a Youtube video. Those blocks are floating on the water. I think he used particle for the objects and fluid simulation for the water. Is there anyone who know how he made the blocks floating ...
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1answer
28 views

blender Python Error - flip fluid is not baking - unknown error

Every thing ok when i try to bake the flip fluid simulation it's come. the error related to addon because without flip fluid added the domain can be baking. how to fix that?
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32 views

How to make this liquid/fluid/melt effect?

I was wondering if you guys can help me figure out how to recreate this kind of effect (see the attached image). I’ve tried with the fluid simulator (mantaflow) but couldn’t make it work as well as ...
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1answer
43 views

How to make liquid simulation splash

For too diddly-darn long I've been trying to create a specific scene in blender involving a large splash as a car enters the water. It's never resulted in a particularly satisfying splash and today I ...
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1answer
26 views

Smoke Simulation Appears in Solid View, But Not in Renders

I can't get my smoke simulation to appear in renders. It does appear in the viewport in solid view. Why won't this smoke simulation appear in the renders? This is the render on frame 766: This is the ...
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1answer
32 views

foam and bubbles particles in mantaflow just look like white points moving around

viewport screen. those particles look the same when rendered. when combined export is turned on they completely disappear. yes the particles are rendering as objects and they have a material. heres ...
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1answer
20 views

How do I move large manta flow files safely?

I have a blend file that has a really large manta flow fluid bake in it. It's saved in another folder. Currently I don't have the capacity to render it and I want to save it on an external hard drive ...
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Fluid from Sphere keeps falling from previous position

I am having this problem in Blender 2.93 and 3.0. The fluid from sphere keeps falling from its first position from where simulation was run first time, even when I have changed the position of sphere, ...
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1answer
39 views

How to make peanut (cake) cookies in blender

hope every one is good. I am using blender from last two years but this time stuck in modeling a cake cookies. Picture is attached your help will be highly appreciated. Thank you.
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1answer
45 views

How to control amount of fluid in Mantaflow?

i want to start my simulation with a low amount of water and it should increase after some hundred frames more and more. Unfortunately animating the velocity variables is not working that well and ...
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2answers
31 views

Fluid Simulation, How to change the angle of the fluid based on the rotation of the inflow object

Right now, when I run my fluid sim the water only flows down. I know that I can change this angle manually using the initial velocity values on the inflow object, but it would be alot easier and alot ...
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1answer
32 views

Flow object doesn't generate fluid

I'm trying to transform a cap into water, but every time I "bake", nothing happens. Maybe my cap is too complex, but change the resolution division in the liquid domain doesn't work. I have ...
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42 views

Fluid simulation flows through effector

My first issue, was that the particles got nowhere near the mesh. Increasing the resolution divisions seemed to work. But, everything now flows through my object. Trying a whole new setup, works - the ...
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61 views

How can I imitate Shang Chi's end credit sequence?

Recently watched the end credit sequence of Shang Chi, the flowy water one. It inspired me to try Blender, because I saw this guy go for an imitation that looked half decent. I'm a beginner but I ...
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20 views

following the blender guru tutorial came across weird glitch. what is this simulation that is getting rendered? [duplicate]

did I click something wrong i want this off wierd simulation thingy how will i turn it off
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1answer
32 views

3d printing a paused simulation

I'm a total newbie to blender and 3d printing and conscious I'm taking on a lot here, so I'll try to be as clear as possible. My concept is to make (that is, get someone to 3d print) an object that ...
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1answer
36 views

Fluid simulation wrong behavior

The fluid seems to explode in the first frame and then back to normal. This is the first time it happened. I applied the scale for both the domain and the flow object! Video
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23 views

Blender physics simulation/animation not copying to Keyshot

I'm very new to Blender. I'm trying to export a simple fluid animation into KeyShot, but haven't had much succeess I tried creating an animation with a sphere moving around, and it worked, however, ...
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1answer
49 views

How to know how much RAM a FLIP Fluids fluid simulation will require?

I'd tried to run a really big fluid simulation with FLIP Fluids (built from source on Linux). I am not using the default fluid simulator. However, I wasn't happy with the quality of it, so I upped the ...
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17 views

How to keep smoke domains reliably visible?

I'm learning every smoke setting by creating a new fluid domain and cache folder for every single setting. Once all five domains were showing smoke. Now I'm unable to see the active (screenshot) smoke ...
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1answer
216 views

Fire Doesn't Rise Up and It looks Fake

I'm initially used Blender 3.0.0 beta on Windows 10 but I duplicated this result on Blender 2.93.6. I can't get a realistic fire simulation. I followed this tutorial https://www.youtube.com/watch?v=...
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32 views

Liquid seems to evaporate by the end of a fluid simulation

I am very new to fluid simulations. I have watched several YouTube videos and I understand the basics. But for some reason, my fluid seems to evaporate as time passes in my animation. In frames 1-40 I ...
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1answer
129 views

Error Baking Fluids Simulation in Flip Fluids add-on Blender

I installed the flip-fluid addon from a different website and not the official one (i cant afford the original one). It does seem to work fine but when i try to do the simplest fluid animation in ...
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8 views

Importing Blender Mantaflow Fluid Simulation Into Daz3D?

I have a baked fluid simulation mesh that I want to import into Daz Studio, but when I export it as an .obj file and import into Daz, it just ends up as a static object. Is there any way to turn the ...
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1answer
44 views

Quick smoke animation by python invisible - Working by GUI

Opening Blender > General > Object > Add> Quick Smoke results in an animation displaying the moving smoke. As expected. Doing the same in python, displays the the smoke in frame 1, yet it ...
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21 views

Can you simulate compressed air, such as an untied balloon or a compressed air canister?

From reading other questions, I now know simulating atmospheric conditions, such as drag and pressure gradients, is very hard and complicated. However, I was wondering whether you could simulate ...
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1answer
47 views

'bpy_prop_collection[key]: key "flip_fluids_addon" not found'

I was trying to attached the ff code to my scene via Text Editor to call/enable said add-on but encountered error in title. ...
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14 views

How do you make one smoke inflow dissolve while the other not while still interacting with each other?

I'm trying to figure out how to do this. I wanted to make the sphere smoke inflow dissolve while the cube doesn't while still interacting with each other. How do I achieve this? Thank you.
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1answer
38 views

Fluid simulation not touching collision effector

In honor of spooky season, I wanted to test my fluid simulating skills by replicating the iconic bloody hallway scene from The Shining in blender. I was getting pretty far along, and then I kept ...
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39 views

Odd Glitches in Flip Fluid Alembic Export

I've had this problem across a few fresh attempts, I am creating a fluid sim in flipfluids exporting said sim as an alembic appending that alembic into another .blend at which point it seems to ...
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My smoke is blocky even at highish resolutions

I’m working on this project where I’m getting this blockiness in the fiery smoky flying rocks. I already increased the resolution of the bake to 500 in the domain menu and it took the whole day to ...

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