Blender Stack Exchange
Blender Stack Exchange

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.

Blender has used mantaflow, an extensible framework for fluid simulation, for its fluid simulation engine since version 2.82 in February of 2020.

Fluid simulation in Blender is used for both liquid and gas (fire/smoke) simulation and have a workflow involving a Domain Object a flow and zero or more effector objects.

Questions about any aspect of the workflow, including cache baking should use this tag.

132 questions
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How can I get rid of this overlaping effect?

I would like to use several domains for a large fire simulation/animation because I need a high resolution to be able to get close with the camera. Unfortunately, the domains either overlap ugly or there is a gap, which is even more ugly. I've…
eltitano
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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 know how to fix…
User 23412
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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 I want to blur the particle and have vague swirls…
bandybabboon
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Why is there no "scenes collection" for this flamethrower demonstration?

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 meshes, I am…
bandybabboon
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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 'leaking'. I found a solution for this by making…
dumdumdumbledore
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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 character. This picture here is a good example of what…
Massimo Asteriti
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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 emission, initial velocity, but no matter what I do, there…
Sohail Nordin
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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 like to make it look less blocky. Edit : I found a…
Sohail Nordin
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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 just got messy and then I tried starting from…
felina hernandez
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Blender Mantaflow - Simulation has some weird failures that I can't get under control

I´ve tried around with some mantaflow sim with different domains and particle emitting smoke/fire simulation. So far the stuff looks great but I have two issues all the time that I can´t control. Even though they are collider objects, the fire hit…
MacRosefield
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Blender Mantaflow 2.93

I've been told that Mantaflow is built into blender. So can you guys tell me where I could possibly find it? I've been needing for a project I'm working on.
WildWarrior773
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Smoke simulation set to outflow, the smoke still interact with the ceiling

I set the flow type to outflow, it's supposed to be not interacting with the ceiling as the Blender Manual says, the ceiling will be acting like a black hole, however, below is my screen shot and I can observe the ceiling is colliding with the…
user3505400
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Problems with Liquid

I don't know if I checked a bad box or something but I was following mantaflow tutorials and now I cant get any liquid to flow out of an object marked inflow, I have the domain and an effector set but I cant get any flow out. Attached is the scene…
Spencer Johnson
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