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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.

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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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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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blender quick liquid not rendering 3.1.2

I just downloaded blender 3.1.2 after pulling my hair out with 2.9. Brand new install on a Mac with all defaults. First created a sphere, then applied Quick Liquid, and clicked to apply Mesh. I ...
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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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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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Mantaflow preview not working in OpenVDB

[blender 3.1] Mantaflow preview not working on OpenVDB but in uni cache. If I setting with [Replay]-[OpenVDB] and play simulation then it's only show first frame and stop. I tried a lot and finally I ...
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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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Smoke rings with mantaflow or principled volume?

I've been trying to get a smoke ring effect like this, I've tried using a torus as an emitter set to geometry which works to create the smoke ring, but only when emitting on the Z axis. I want it blow ...
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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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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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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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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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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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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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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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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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Mantaflow seemingly stopping mid simulation?

I'm running into the problem that my simulation seems to stop mid-simulation. Somehow the speed Vectors also don't match the smoke, and they disappear at frame 800 completely. I tried a lot of stuff, ...
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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 ...
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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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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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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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cant see smoke in render mode

I cant see smoke in render mode, but i can see in solid mode
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Smoke doesn't seem to have initial velocity

I've been following this tutorial on how to make a simple explosion, I am using the same values, but I don't get the same effect. It seems like my particles have no initial velocity. Do you know what ...
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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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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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Viscous fluids not working as intended

I have an animation where a character is sinking into a viscous liquid (simulated with Mantaflow), but the liquid isn't acting as I want it to. I want the liquid to deform concavely around the ...
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Does mantaflow store the velocity of fire and smoke?

I’m trying to remove parts of the fire with a noise texture but I need to animate the texture to move at the same speed as the fire. Is it possible to use the velocity information of the smoke to ...
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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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Does an object emitting smoke also behave as an effector?

I'm making a campfire in Blender 2.93 and I'm wondering if I need to make duplicates of the objects and set them to effectors. If my emitters are set to flow, then I can't set them to effector. So if ...
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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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Mantaflow fire not appearing in the image saved after rendering

I have rendered an image that has mana flow fire and it is appearing on viewport and the render. But the image that is being saved on my computer doesnt have the fire. I am attaching images to explain ...
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Is it a bad idea to have multiple smoke domains?

I have this scene with 3 smoke domains, each with different properties. Whenever I try to render in cycles, it crashes. I'd like to know if using multiple smoke domains is significantly more demanding ...
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How do I emit smoke at a specific frame?

I'd like to emit smoke from this object at a specific frame. Before that frame, I'd like there to be absolutely zero smoke visible. I've tried animating the "Use Flow", density, surface ...
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Mantaflow fire simulation has blocky rings

I'm curious, is the culprit of these blocky-looking flames the low resolution divisions? Or is it just a limitation in mantaflow? Currently its set to 160 and before I increase it any further, I'd ...
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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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63 views

Smoke Vacuum / Suck in Smoke

I´m trying to suck in smoke with a shipping container. It should represent air sucked into it, but I can't come to a good solution for it. I tried force field but it's really not exact and smoke goes ...
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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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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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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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My Smoke simulation has this buggy blocky shadow

I have been tackling this problem for the last 2 days and I can't find any solution to it. So, I baked this smoke sim and test rendered it, It has some weird blocky shadow and reflection, I thought it ...
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Liquid soaking into other objects?

How would you go about making a liquid soak into another object? (or at least give the illusion). Heres a link to the effect Im referring to. https://gfycat.com/daringaltruisticdwarfmongoose
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why is my liquid simulation baked like this?

The liquid simulation looks like particles in the right image how do i make it look like the image on the left
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119 views

Block Shadows appearing in volumes

I have these strange shadows emerging from a smoke simulation. I circled them with the red. They don't seem to be correlated with any actual density of smoke in the simulation. Placing a plane above ...
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Problem with fluid type domain & fluid object type inflow

I baked mesh and data both, water(fluid) simulation in domain and fluid flow from plane objects was working fine until i rendered an animation out of it and closed Blender The next day when I came to ...
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2 votes
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26 views

creating a barrel, smoke + fire creeping through barrel

I am doing a test. I've got a hollow cylinder mesh that's supposed to represent a cannon barrel, and I have managed to get an emitter firing particles out of this cylinder. The cylinder constrains the ...
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Mantaflow water simulation leaving too much space between particles and colliders

I've been getting this problem where the water is colliding properly but at an offset. I've tried tweaking every setting and still nothing. No tutorial talks about it, nor have I found any posts here. ...
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Mantaflow problem: I can't get any particles to bake in a closed shape anymore

I'm working on an animation using mantaflow and I'm having problems trying to increase the amount of liquid that my liquid domain emits. I tried scaling up the volume of the emitting geometry but it ...
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My fire has extremly low resolution

I started experimenting with fire and smoke and now i have the problem that my fire and smoke both have are in terrible resolution. I know that the Resolution Devisions are just on 64 but I also tried ...
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mantaflow explosion: need more light emitted, reduce graininess

I've been working on an image with a cannon firing, following a mantaflow explosion tutorial. I'm getting pretty excited with the results (see render image), but I need the explosion to emit more ...
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How do you render just the reflections of smoke?

How would you go about rendering just the reflection of smoke? Im trying have smoke reflect off of text but not appear anywhere else?
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