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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Physics fluid stimulation is not showing rendering tab or being rendered in one particular project

I am in a middle of project. I did some basic flame kind of Stimulation for my project. I can see that effect in object mode and material mode but not in rendered mode. So I created a new project. And ...
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How to change the direction ,speed and color of flame in blender 2.82

I am trying to create a sci-fi spaceship flame in blender .I have add in a circle and made it the inflow object I gave a quick smoke simulation and changes the domain type to fire only and baked the ...
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When i bake the mesh on domain, i want to see the waters mesh NOT the shape of the domain mesh, how can i fix this?

So I want to color my fluids on the eevee engine and when I click "bake mesh" when having only the domain selected, instead of giving me a fluid mesh so i can chose the material for the ...
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Blood splatter (fluid simulation) on cloth (that gets stained and absorbs the blood a bit)

As the title says, I need to make an animation where a soldier on white robes gets blood splattered all over himself. The blood needs to be as realistic as possible and the robes need to get stained ...
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Fluid emerging from random part rather than flow object - Blender 2.82

I was trying fluid simulation in blender 2.82, but the fluid seems to be coming from some invisible object inside the domain rather than from the inflow object that I specified, The domain boundaries ...
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Can i used fluid control with particles in blender

I was wondering if it is possible to use an fluid simulator control as a particle. The isosphere on the side is a cotnrol while the circle is an emitter that using it as a dupli. Could this work?
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Duplicate one fluid simulation with a time offset?

Helo, I'm trying to create a scene where I have 10 bubbles coming up in a bath with splashes one after another. If I put them in one big domain it bakes forever and the resolution division is way too ...
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Bake Mesh Sequence Cache to Keyframes or Shape Keys?

I have a Mesh Sequence Cache modifier that references a .abc file. Is there any way I could bake the modifiers' motion to the object so it doesn't have to reference the .abc file? I'm doing this so ...
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Does anyone know how to make that liquid in Blender 2.8 ? Link provided

https://youtu.be/04v4qWVtdPs?t=134 I might have some ideas on how to make it, but honestly, I am not sure if it's going to work, I am not that experienced with simulation. If you guys got anything to ...
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Fluid simulation doesn't work while using a sealed container as an effector with the inflow inside?

Apologies if this question has been asked before, but i've searched around and couldn't find any solution, especially amidst all the confusion between versions before 2.8 and after. Also to note : I'm ...
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What does surface thickness do in Liquid Physics and how to calculate it?

So I want to create a simulation simulating liquid splashing onto an Effector and rolling off. The problem is that when the surface thickness is too low, the liquid just phases through the Effector. ...
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Unable to get Fluid simulation to work in my Blender 2.82

I am watching 3 different tutorials on creating liquid in blender. They all lead me to the same failed outcome: After setting the domain object for the fluid and outflow object for the fluid and ...
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Fluid simulation mesh baking issue

I created a simple fluid simulation with cube as domain and sphere as flow object (geometry) in Blender 2.82. After baking the data I played the animation, the particles simulated as expected. Then ...
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Mantaflow simulations causing strange diamond artefacts

I've create a fluid simulation with mantaflow and am rendering the FLIP particles themselves (no mesh). The simulation looks great (with a resolution of 96) but when it becomes quite turbulent there ...
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Particles/fluid attaches or fills the volume of an object

Holla, Right, so I'm curious on how to achieve a certain effect via two different approaches. What I'm sort of trying to achieve: https://www.youtube.com/watch?v=KFYFh8w4758 Case 1: I'm looking for a ...
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1answer
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Blender 2.82 Mantaflow on a small scale

I am able to input liquid into the scene from a flow object set as geometry and the liquid falls into a flask that is set as a collision effector. But when I scale down the flask to its actual size (...
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Fluid mesh disappears when I save

I am brand new to Blender and this is the first project I've made. I am using 2.83. I am following this tutorial: https://www.youtube.com/watch?v=6zOjJfc6ZJI to make a fluid fill a container. ...
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Blender removes my fluid simulation cache when rendering. (Help)

I know that this may sound weird. Blender removes the cache I baked for my mantaflow simulation and ends up rendering a "box" type of thing. Is there any way to fix this?
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Missing the “Bake Data”, “bake mesh”, etc buttons in the default manta flow stettings for Mantaflow [duplicate]

So, I needed a fluid sim for a project, set up the effectors and inflow, no problem, however, after putting a cube around my scene and setting up the domain modifier, there where no options to bake (...
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Pouring liquid from one cup to another

So, the title basically explains it. I am trying to create an animation in which I want to pour liquid from one cup to another but I don't know my way about it. Any help will be appreciated.
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1answer
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Fluid - “pancakes” instead of flow

I did the usual water simulation, resolution divisions is 100, initial velocity on normal is 15 (extra fluid speed). I wanted to get usual flow, but I have this (picture). How to fix it?
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How do I control the Outflow and Inflow amount in Mantaflow?

I know I can change timescale, but then if I have inflow and outflow in one domain I cannot do something like making like a the sink clotting or something, and decrease outflow to not be able to match ...
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(V2.83.0) Mantaflow fire + gas - How to scale emitter

I have been testing mantaflow for the last few days and have a simple problem. I want to create a rocket launch animation. Now fire and smoke should come out of the engine. This works great. But the ...
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Fluid simulation - Where are the slip options for domain boundary and collision effectors in Blender 2.82 and above?

I'm sure I've seen these options before, but I really can't find the settings for the slip type in Blender's UI - at least not in 2.82. I found them in the documentation for 2.80: https://docs.blender....
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water clipping bottle as it fills

I'm encountering this issue where my liquid bunches up and clips through my bottle no matter how I have the normals or the thickness of the collider. I've fiddled with all the settings for ages now ...
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37 views

Fluid domain becomes a solid block with fluid's material

I just started using Blender in the last few days and found some of it an exercise in frustration. I've watched a heap of YouTube tutorials on creating EEVEE fluid and I think I get it (for the most ...
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1answer
56 views

Is there a way to hide/remove parts of a fluid sim mesh so they won't show in render?

I have my fluid simulation beneath a floor plane, and I only want the splashes that rise above the plane to be visible in the final render. I've been trying to find a way to make the pool of fluid ...
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1answer
34 views

Mantaflow - creating smoke out of fluid particles

im trying to implement mist in my water scene, to do it im trying to use spray particles as a way to generate gas, but yet didnt find a way for it to work. I know it is possible in FLIP Fluid addon ...
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1answer
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I'm having trouble finding the fluid Viscosity bar in Blender 2.83

I was watching a fluid tutorial, but it was using blender 2.8 while mine is 2.83 and I am having a trouble finding the Viscosity bar. Can you help me solve this problem?
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Problem animating speaker making fluid move

I am new here, I did a few projects but now I got stuck with a new one, what I am trying to do is to make a speaker reacting to the music, but the problem is when I try to simulate some water which is ...
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Why is my fluid simulation not working

every time I make a fluid simulation it works but when I need a break or I'm done for the day I close blender but when I reopen blender and press play it never works even though everything is the same
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Visualizing voxel data from smoke or liquid simulation in 3D viewport [2.83]

I'm using either the Eevee or Cycles renderers, and I am using the Adaptive Domain feature on a Fluid Domain object. I have set my Adaptive Domain --> Add Resolution feature to 100 voxels (cells). ...
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Need help creating a fluid pouring animation in a FLEXIBLE way

I really like flexible, quick, non-destructive workflows where I can shift stuff around on the go. I want to achieve the effect of molten tin pouring out of a can. Simple enough, but I really don't ...
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Smoke Invisible Except for Color Mapping in Viewport

This simulation uses a modular cache. With color mapping, it looks fine. The default appearance in solid view and cycles view both show nothing until I use fluid upres. Then, the solid view only has ...
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Blender 2.8 fluid simulation result not displayed as mesh

Following the tutorial at: https://youtu.be/35bbyAJodEQ?t=736 I can't seem to get a mesh result from my fluid simulation: How can I get the mesh result? I forgot to bake the mesh. But even so, the ...
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Fluid loss in 2.83

My fluid simulation is a rotating cube filled with water. I noticed, that the volume of the water gets less and less while the cube is moving, but there is no fluid escaping from the cube. During my ...
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Dual gravity for a fluid simulation (looping animation)

I'm working on this looping animation. When the character falls backwards I want the fluid sim to splash upwards as usual. I've set this up and it's pretty straightforward. What I'm struggling with is,...
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Volcano eruption Blender

I'm currently using Blender 2.83 and I'm new to fluid simulations. I want to create a volcano eruption, using fluid. I've created my collision and used a UV sphere for where the liquid will flow from. ...
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volcano eruption

I have created a mountain in blender 2.8 and I want to use a fluid simulation to make it look like the mountain is erupting. I added a uv sphere and made it an inflow fluid. the fluid is running down ...
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How to add fluid simulation to an animation in blender?

so I've made an animation of some characters rotating along an axis, and I want to add a fluid simulation at a certain point in the animation. At around 240 frames in. Basically I've got a model of a ...
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FLIP fluid simulation does not detect collisions anymore

Sorry for such question, but someone is getting dumber by the second (me or blender): fluid collision stopped working completely (worked before by some miracle) Domain is set, fluid set as Geometry, ...
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Can't find Bake option.. Blender 2.83 [duplicate]

I'm trying a fluid SIM in the latest version, 2.83, and I can't seem to find the bake option for it. It used to be under settings tab but it isn't there anymore. Please help.
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1answer
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Why doesn't my effector work like I want it to with the new Mantaflow (Blender 2.82)?

I want the plane highlighted in the picture to work as kind of a surface for the water simulation to run through, but when I go ahead and simulate it, it just goes through the object like if it was ...
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2.83 Mantaflow / Smoke-Volume Rendering errors

I have some problems with my mantaflow simulation and really can't find the error. It's baked, has a principled volume shader, it looks fine in viewport render, but when I hit F12, it doesn't render ...
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54 views

Looping Fluid Simulation - Boolean Performance

I am trying to create a looping fluid simulation. This is something that I have never seen done elsewhere, without faking it in post/sequencing, but I think that my method should work. The ...
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Is Smoke Flow Force Field broken in 2.8x?

I'm experimenting with smoke flow field and it works as expected on 2.79 but when I try to apply the force field in 2.8x it doesn't work at all. Is this a known issue or am I doing something wrong? ...
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How do I create a fluid vortex/whirlpool?

This questions has been asked before but never satisfactorily answered... I'm looking to create something like this... https://www.youtube.com/watch?v=cCjCQwgcXHg As you can see, its liquid so I don'...
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How can you make a beer simulation Blender 2.83 (Mantaflow)?

I saw a lot of fluid simulations that look gorgeous thanks to the foam that Mantaflow adds, could you make a beer with foam simulation with it?
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1answer
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Bake missing in Blender 2.83 [duplicate]

I'm new to blender, and I'm trying some basic water sims. I can't see Bake in the UI anywhere, and I've been looking for over an hour... Any ideas?
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1answer
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Why does my render output change everytime I click render image?

I am using Blender v2.83.0 to render a Motion Tracked car with Smoke simulation in Blender and I cannot seem to get my render settings correct. I am getting a problem where every time I click 'render ...

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