Questions tagged [mantaflow]
This tag is for questions about Blender's Mantaflow based fluid simulation. Use it for questions about set up, parameter settings and other aspects.
129
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My fluid sim only shows the domain box even after baking
I am making an animation with fluid in an incubator. For some reason, the sim just disappeared and now it only shows the domain box like this, even after freeing and baking multiple times. Does anyone ...
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Smoke is Noisy with background image
I am trying to composite a smoke simulation to a background image, but some of the smoke is noisy in thinner areas. How do I fix the issue?
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How to achieve this water splash animation for any solid object ( suzanne for ex)?
I am really trying to understand mantaflow and water simulation in blender and I want to make a fluid animation that throws water on an object in blender (kind of like the 3D splash effect you might ...
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Mantaflow fluid simulation - Why aren't spray and foam controlled by different elements?
I'm not sure there is an answer to this, but it is very frustrating.
In Mantaflow, I have tried adjusting practically every single parameter in the Spray - Foam - Bubbles section in an attempt to get ...
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26
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Mantaflow explosion looks nothing like the tutorial
So recently I was looking into making explosions in Blender with Mantaflow, and I was following a tutorial by Iridesium but my explosion looked nothing like his. I followed it step by step, but when I ...
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42
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Mantaflow Fire Sim Apply And Move Blend
I have created a Manataflow Fire sim and have identified the frame I want from the sim. I need to take this object and import it into a different blend to incorporate into an animation.
The issue I'm ...
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10
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Force Field is effecting Smoke Simulation outside of specified Collection
I designated a collection for effectors for my smoke simulation, however, force fields that are outside of that collection are still effecting the simulation. How come?
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40
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Smoke Simulation artifacts before start frame
I have an explosion in my scene, and I am getting strange artifacts from the smoke simulation even before the start frame.
The start frame is 216, or when the explosion actually occurs. There seems to ...
- 160
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16
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How to create a flow of liquid that finally bursts upwards? [duplicate]
Dear Blender benders,
I'm working for an animation which includes a solid water flow that shoots upwards (like an arc) and bursts/dismantles at the top. Then after that the smaller particles of the ...
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133
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Uses of waveletNoiseTile.bin
I find that Blender smoke simulation creates waveletNoiseTile.bin in random directories. I found some code at https://github.com/blender/blender/blob/main/extern/mantaflow/preprocessed/noisefield.cpp.
...
- 358
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24
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Mantaflow smoke partially ignoring collision effector
I have a smoke emitter parented to an open ended cylinder mesh, all is well until i make the cylinder a rigid body, then the smoke permeates through the cylinder mesh. I have tried everything (I can ...
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52
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Fluid Simulation - fluid quantity
I am working with Fluid Simulation, and I am struggling with some of the settings. I read through the manual on blender.org but I haven't found a solution for this.
I am trying to add fluid in a "...
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69
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How do I prevent my smoke simulation from getting smaller with more resolution divisions?
Whenever I increase the resolution divisions, the smoke always becomes smaller. I want more resolution without shrinking its size.
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532
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Fluid sim showing multicolor particles. How do I turn them off?
I'm a noob in blender and I've encountered this before but don't remember how i fixed it. The fluid shows these multicolor heatmap like surface in viewport.
Renders the domain as a cube instead.
I ...
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201
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Why Does My Fluid Sim Suddenly Explode?
I've been fighting with this sim all week. After attempting mantaflow for literally years now I still don't have a handle on how it behaves. Is it mantaflow, or is it me!?
That said, I have a basic ...
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84
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Weird coloured circles around fluid sim
I'm trying to create a fluid sim however whenever I view it in viewport the liquid is covered in these strange heatmap-like circles that wont go away. How do I get rid of them?
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The domain cube is visible in render
The domain is visible at 64 and 182 domain voxel res.
The cube object properties is set to wire view and they physics sim is baked. Compositing is set image->image.
here is the file.
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Why is this mantaflow fireball giving bad quality?
When I render high-res with 450 resolution divisions, the result is completely different from the preview at 64.
I'm using 2000 particles that result in quantized dots of fire, rather than liquid, so ...
- 197
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19
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Why is there no "scenes collection" for this flamethrower demonstration? [duplicate]
Here is a V2 flamethrower file that doesn't work for Blender V3, How do I find the scenes collection list? What other steps can I take to make it work? I only need to tweak the camera and change the ...
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17
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Render flow simulation particles as path
i am trying to render particles from a fluid simulation as paths. the particles dialog has the option but it does not do anything. only halo or object works.
If i create my own emitter and try to ...
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23
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Mantaflow not working properly
I've been fiddling around with mantaflow in Blender and I can't get it to work properly.
I'm trying to fill a cup, but I've encountered some problems:
At first my cup wasn't holding the fluid, it was '...
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419
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Blender - Quick Liquid - Domain is a glass cube
In Blender 3.3.0, "Quick liquid" creates a domain which is rendered as a glass cube.
I tried in several ways but please check the most straightforward one:
Brand-new Blender session
Change ...
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1
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125
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Render mantaflow as particles, not mesh
How can I render Mantaflow (fluid) as particles, not mesh? (Blender 3.4+)
After rendering with Cycles engine, it should look something like the following (color based on speed, particles evenly spread,...
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Should I be changing temperature min and max or reaction speed if I want my flames to go higher?
Working on a fire simulation and I was confused about which value is more physically correct to adjust because I know adjusting reaction speed slows down or speeds up the fire simulation.
Any help ...
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51
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How do I get Eevee Mantaflow fire to not look pixelated?
I know this type of question has been asked a lot, but no one else's solution works for me. I'm using Blender 3.0, I would be willing to update but not to go to an older version because I need this to ...
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75
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How to drive noise textures position with attributes?
I'm working on a fire simulation and I've been using a noise texture to remove parts of the fire.
So far I've just animated the Z value of the mapping to move the noise up. But I saw someone use an ...
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190
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How do I fix that liquid particles not rendering?
When I try to final render my particles they don't render.
Preview
Render
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155
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Mantaflow Fire very blocky?
i made a Mantaflow Fire+Smoke Simulation and have to problem, that the fire looks very blocky and large. The Smoke looks pretty good nonetheless. It´s a Fire + Smoke Emitter and the Domain Resolution ...
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78
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Rocket Launch Simulation with Mantaflow looks weird
I want to recreate a Rocket Launch and have the problem, that the smoke behaviour looks very different from Real Rocket Launches.
I put a Mantaflow Fire/Smoke emitter and Force Field in every engine. ...
- 487
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36
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Water not flowing out of effector [duplicate]
I was making an orange smoothie sim but then I realized that when I wanted the water to pour down the glass cup the liquid sticks, I haven't enabled viscosity and I keyframed the initial velocity on ...
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97
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Fluid volume disappears inside of a moving object?
I've noticed that with the flip fluids addon and the built-in fluid simulator in blender, if you have fluid inside of a moving obstacle/effector, that fluid volume will eventually disappear over the ...
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42
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Liquid Grouping Around Rigid Body Flow Effector
I have a simple fluid simulation set up with rigid bodies that collide with each other before the water flows. The rigid bodies also have a flow effector so that they will affect the water. It seems ...
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No water is coming out after baking the fluid simulation
I literally never got it right...
This time I'm trying to make a pool/fountain.
The water should be overflowed the cylinder and onto the cube.
But now nothing comes out after baking.
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379
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Can I reuse / re-import fluid cache files into Blender?
While making multiple fluid simulations I had saved multiple cache folders with the "data" and "config" folders. Is there a way that I can reuse the cached data to import back the ...
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36
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Mantaflow liquid domain with animation nodes: do particles change index?
Ok, I wanted to answer how to make an object flow along with a mantaflow simulation and I thought hey, cool idea: just use animation nodes.
So I created this animation node setup:
but the result was:
...
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387
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Is there a way to make the liquid stick to a mesh ? Instead of sliding off
I'm trying to animate a chocolate pouring on top of an ice cream which is rotating and moving. I tried all sorts of settings on the liquid mesh but every time the ice cream makes the slightest move, ...
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90
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Quick smoke effect disappear after succesfully baking
I’m using Blender 3.1. I have a smoke domain (quick smoke effect). It plays well in Replay mode. In All mode, Baking completes successfully and the files are generated in the folder. However, the ...
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884
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Fluid domain is visible before and after the animation start
I've tried following the tutorial video Create this Satisfying 3D Animation in Blender by CG Geek on YouTube and have a problem: The fluid domain is visible as a solid cube object before the fluid ...
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202
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How to get shrink these Colored Balls over the Liquid? [closed]
I'm doing a fluid simulation right now, and for some reason these particle previews are blocking me from seeing the mesh; which is fine underneath. I was trying to make these spheres smaller, but I ...
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308
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Import Mantaflow VDB Cache Files into Bleder doesn´t work correctly
I made a Smoke Simulation with Mantaflow and then tried to import the vdb files from the data folder in the cache folder, but the imported vdb sequence doesn´t look the same. It looks simplistic and ...
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104
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Blender Fluid simulation for larger areas?
I have a room with a pipe on the ceiling that water has to drip down from. For this reason I have to make the domain accordingly to the bottom that the water comes up and splashes there. But because ...
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387
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Liquid Simulation with small Emitter in large Domain?
My problem is that my emitter only emits liquid when the emitter is big or the domain small enough. But I need a very small emitter that is supposed to squirt water within a large domain. Is that ...
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186
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I want to have cold smoke emitting from bottle but can't get the settings right
So I want to make an ad video for my portfolio. It's a beverage bottle and I saw a tutorial on Youtube which was smoke from a cup of tea. It worked for the top part of the bottle and I tried to tweak ...
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135
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Convert Mantaflow or other sims to mesh/get specific frame from sim?
Is there a way to convert simulations into mesh? Freeze on a specific frame you like, bake it/convert it to geometry so you can 3D print it? I'm asking specifically about water.
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23
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Problems with Materials on imported mantaflow object
When I import a baked mesh object using the mantaflow simulation, and applying a material to it, it doesn't appear to hold the same "material properties" as any other object imported or ...
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300
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Smoke Simulation - "border collision" is not working
I am trying to create some nice sprite sheets from blenders smoke simulation that could be used in game vfx.
But the smoke always fills up the entire smoke domain, the "border collision" ...
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155
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Fluid ignores gravity when hitting Effector, runs horizontal?
I am new to this forum and just signed up to solve this problem that i have with Mantaflow simulations. See I watched a lot of tutorials about fluid simulations but still am relatively new to blender, ...
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38
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Mantaflow error when filling a collision object mesh
First time I encountered a problem like this one, when there is an invisible obstacle inside my mesh, that is set as a collision effector with the liquid simulation.
I have checked, there is no hidden ...
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2
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276
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How to do small amounts of fluid?
I want to have some tiny drops of water at a time fall into a mug. I don't want to flood everything. I can't figure out how to do this, help would be greatly appreciated. I've spent the last 5 hours ...
- 151
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442
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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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