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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14 views

Record water / liquid simulation animation to then transform it?

is it possible to record an animation created through water liquid simulation on a plane. Then fix this transformations that where recorded so you can transform the object without recalculation 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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17 views

Advanced Lava Simulation

I'm to figure out how to create realistic lava. I've watched pretty much every Blender tutorial out there on it, and they all seem to present results similar to this: Which looks cool, but it only ...
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23 views

Blender big scaled fluid simulation problem

I'm in trouble with blender fluid simulation (which is very awesome!) because i want to create a big scaled water simulation with a ship leaving the water. But it's a very big ship (700m length) and i ...
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1answer
655 views

Fluid simulation : sometimes not properly baking?

I'm playing with fluid simulations (Blender 2.78b). There is something quite odd. When I bake my fluid, sometimes it works, sometimes it acts as if some parameters (inflow velocity ? speed ?) were ...
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1answer
328 views

How do I enable motion blur for Mantaflow fluids?

How do I enable motion blur for Mantaflow fluids? I'm using 2.82
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17 views

How to make realistic pouring soda

the left picture is from my video. You can see the red liquid and foam. The middle and right picture is from Blender (2.82a). The liquid looks a bit slimy at the end (but it is water Base: 1.00). ...
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7 views

Activating the Paintmap and wetmap attribute to multiple objects

I'm working on a project that involves the use of dynamic paint, i have just one brush but over 100 canvases because i used the crack-it addon. How do i enable the wetmap and paintmap to all cracked ...
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1answer
20 views

get rid of artifacts (fluid)

how to get rid of black spots (artifacts). I'm using gradient animation on water simulation 2.80 (old fluid sim.) But, when i play animation on viewport, there is no issue of black spots. Video https:/...
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'Bake data' button not visible in fluid options

(new to blender) i am trying to create a fluid sim in blender 2.83 but in my physics tab under domain there is no 'bake data' button in the options. It's there in all the tutorials i've watched but i ...
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20 views

Can not bake my fluid simulation to keyframes, blender 2.83

I am new to blender and trying to bake the fluid simulation I made. However the option "bake to keyframes" is not allowed even when I selected all the objects. Can anyone help to figure out ...
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1answer
36 views

How do see fluids through glass (Eevee)?

I don't see my fluid inside the glass, but i can see the object inside the glass. Does somebody know, what i have to change, to see fluids through glass? Or is this not possible in Eevee? Can i fake ...
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18 views

How to make splash on2. 83

I'm new to blender, just trying to understand some basic tools on blender. So I tried converting a cube to container that the water will be on and adding a sphere which will drop on the container ...
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15 views

Liquid Simulation exceeds cup mesh

Good day fellow blenders i followed CG Geek's fluid simulation tutorial (mantaflow) and i came across this problem. The fluid doesn't take the shape of the cup mesh. I'm using blender 2.83. Appreciate ...
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12 views

Unwanted Smoke Simulation Jitter

I recently baked a smoke sim for my scene. The simulation itself is what I wanted, but the domain seems to jitter at random intervals as shown in the gif. It's not a child of any object that would ...
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1answer
134 views

Is it possible to limit the volume of fluid ejected from a mesh? 2.82

I am working with some fluid simulations in 2.82 which I am planning to add to my scene. My goal is to create a fluid sim which looks like rain water flowing off a roof. So far I have a cylinder set ...
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1answer
42 views

Object floating on heavy sea - how to make shocking rotation less sensitive?

So I have an object floating on a heavy sea. How to make it a bit less sensitive to sudden rotation and location changes, and make it look more fluid instead? I used the technique such as described ...
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30 views

Fluid simulation diffrent in 2.9

I just tried blender 2.9 and 2.9.1 and the fluid simulation is behaving differently from 2.8.3. I tried a simulation that splashes around a lot in 2.8.3. In 2.9 it just hits the ground, spreads and ...
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1answer
34 views

How to keep relaxed water at start of simulation

Im trying to make a lava sim but as soon as i start the sim the liquid just splashes all over and takes like 2 full secs to settle down. Is there any way to make it settle immediately then react to ...
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1answer
442 views

Object showing only in render and not in viewport even though visibility settings are correct

The fluid sim obstacle is visible at the top of the monitor. Before this render I turned made sure that render visibility was set to off. Viewport view, the obstacle is invisible whilst the ...
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17 views

Fluid Simulation, Render view does not look right

I am working on the Fluid Simulation. I followed an tutorial and created a water simulation. When I switched to a render view, the colors do not change. According to online tutorials, the view should ...
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1answer
83 views

How can I export baked fluid simulations that work in Xcode?

When I export a baked fluid sim to Alembic, it imports back into Blender just fine, but in Xcode, it's just a static mesh. I've tried a few dozen different combos of bake and export options, and they ...
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1answer
97 views

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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396 views

Blender Snow Simulation

How to Create This Snow Simulation.
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1answer
33 views

How do you make a fluid emit smoke and fire?

I am trying to make a liquid catch fire. However, I do not know how to make the fluid emit in the gas domain. A similar question was posted here: How to light liquid on fire? However, in the answer, ...
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1answer
216 views

Is Inflow Animation Broken in 2.80?

So yesterday I spent all day trying to figure out everything I could about the fluid simulation, as I wanted to help answer a post. In one of my test, I came across an issue. So I made a new, bare ...
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10 views

How can I make sure that the particles in my fluid simulation get rendered?

I am using the new blender 2.83 fluid simulation and am trying to use the particles such as foam, spray, and bubbles by rendering them as a collection. However, when I go to render the simulation, the ...
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8 views

my particle system is not visible in vertex group

so , i was trying to make a simple rocket propulsion animation , and was following similar steps to the ones in the veritisum tutorial for explosion , so , but , the particle system is not getting ...
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1answer
146 views

Show/hide mantaflow particles

This is probably a simple answer, but I can't seem to find it. I've already searched BSE, but I can't find a related question. How can I show/hide the particles in the mantaflow simulation? I ...
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2answers
118 views

Can we make our fluid domain object from a cylinder?

I'm a beginner and wan't to know more about the fluid domain objects. Is it possible to make our fluid domain object from a cylinder? A lot of tutorials on YouTube use a cube for it. I have also tried ...
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23 views

Soil physics / simulation

How can I make an active soil in Blender? I need something that is correctly affected as a shovel interacts with. It would be great if there be the possibility to vary the size os the soil particles. ...
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0answers
35 views

Using full CPU to bake mantaflow simulation

I have dual 8-core Xeon e5-2780 0 (2.7ghz) processors, and 128gb of RAM. When trying to bake mantaflow fluid simulations, even the simplest simulations take forever because usually it is only using a ...
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1answer
27 views

I can't render any fluid dynamic nor can see inside any fluid domain

Two issues have been crushing my dreams of doing literally anything related to fluid dynamics. I am following along with this tutorial. However, at the 2:00 mark, the instructor very casually turns an ...
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20 views

How let the Liquid Domain disappear, but keep the mesh of the fluid visible?

I have a problem with the Fluids. I have render water around 1000 frames for a half day now. But the whole animation is 4780 frames long. After the 1000 Frames i don't need more moving Water, but i ...
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13 views

Can you start Simulation From Already Simulated Frames?

I am using Blender 2.83.2, Just Trynna do Some Simulations. I have some heavy Simulations But "FREE ALL" in Mantaflow Cache clears everything saved as cache on the Disk. I have don't intend ...
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1answer
53 views

How to do fluid simulation?

Blender newbie here. Trying to create a simple fluid simulation in blender 2.83 but it just doesn't work. Here's what I did. Create a cube. Add fluid modifier. Set type to domain and domain type to ...
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1answer
215 views

Why i cant see ''Bake data'' on my blender 2.83?

I am trying to make a fluid simulation but after all the settings done i dont see ''Bake data'' option in my physics panel.
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0answers
27 views

How to? Smoke Simulation Pressurized Steam

Can anyone suggest the best method of creating Pressure Steam in Blender? I have tried Mantaflow with little luck. here is a source image I am trying to emulate. thank you all.
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2answers
21 views

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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2answers
818 views

Make an object into a fluid

i am trying to make a fluid simulation of a metallic text melting to the floor and doing...you know, do what fluids do. My issue is that if i make the text a fluid and bake it, the shape gets ...
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1answer
1k views

No “obstacle” option in fluid type

I'm trying to make gas flow through a tube. I've watched many videos demonstrating similar procedure. And they simply add a cube or any other object, go to the 'physics properties', click 'fluid', ...
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21 views

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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1answer
56 views

Inactive Fluid flat glitch

I am animating a fluid simulation that's supposed to be used for an animated simulation of 'the floor is Lava', the details are unimportant. What is important is that to ensure the items that fall ...
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0answers
29 views

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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0answers
48 views

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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0answers
12 views

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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2answers
54 views

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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1answer
112 views

How can make objects invisible in only certain areas?

I started to study blender recently, and I was just making some experiments with fluid simulation but I was stuck with this problem.
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1answer
33 views

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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0answers
77 views

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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