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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13 views

Imitating controll object in mantaflow?

Before mantaflow there was a "control" type in fluid types. It allowed to do some things like liquid forming an object or waterbending the liquid in shapes. How do I achieve similar effect ...
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32 views

“Domain Type” and other options not showing

(new to blender) I'm trying to change my domain type from smoke to gas, however my smoke domain settings are completely different from the tutorial I'm watching and I'm not sure how to change them.
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Particles in fluid-simulation are falling through Object

I made a fountain in Blender. The fluid simulation looks like it works, but in the last part of the Fountain it falls through it. I had a similar problem few weeks ago and I solved it by increasing ...
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12 views

Sampling Substeps in fluid-simulations

I'm new to Blender an i'm learning something about fluid-simulations. In the physics settings of the flow-object is a setting called: "Sampling Substeps". I have played arround with the ...
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16 views

Cold smoke simulation

I want to create a cold smoke simulation to make a ghost-like object. I want the smoke to be flowing downwards, similar to the one in this video: https://www.youtube.com/watch?v=d8V16BFxGNs&list=...
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No “Final” option under Physics Properties > Cache > Type

My question is pretty simple. In all the tutorials I've watched at some point the instructor says to set the option Physics Properties > Cache > Type to ...
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197 views

I would like to simulate spiky ocean waves from an old animated cartoon

Recently I watched a German movie called Käpt'n Blaubär: Der Film. I loved this movie as a child and when I re-watched it I was really impressed with the wave physics. They are unrealistic and over ...
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Why is my mantaflow liquid/fluid exploding?

I am making a liquid simulation with mantaflow in blender 2.82. For some reason my liquid keeps exploding after sometime. I used different resolutions, lowered the inflow, expanded the domain to try ...
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Blender Mantaflow: Meaning of Liquid Particle Colors

Can someone explain me the difference between the particle colors in mantaflow. I have a simulation where some water is dripping down. The first part of the animation is going fine, until some green ...
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Why don't “control” show up in fluid types in blender 2.8 and 2.9 for me?

It is supposed to be there: As shown in this website: https://b3d.interplanety.org/en/fluid-simulation-in-blender-2-80/ But instead I have: I need the control object but for whatever reason I cannot ...
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Space between fluid inflow and effector

I have a fluid sim with an inflow and a collision effector, but there is a gap between the two. I have applied all transforms. The origins are all in center of mass. the effector was a plane. I have ...
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Export/ Import alembic trouble / blender 2.9

I got some trouble with alembic export/import. I tried to export and reimport a fluid simulation but when i do so the importet mesh is not animatet. Further are all stages of the animation on top of ...
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FLIP Fluids - How to include foam & bubbles when exporting the geometry?

I am using the FLIP Fluid add-on to generate a water simulation. I managed to export the animation into .obj sequence but here is the problem now. The Foam & Bubbles particles generated from FLIP ...
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fire simulation don't show fire but smoke [duplicate]

Im trying to do a fire simulation. Although I have it as fire on setting Physics property panel, my simulation still showing only smoke. Can anybody please tell how to fix this? Thanks in advance.
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Fluids repelling away when hitting moving effector

Using 2.9 After a few hours of playing with every fluid setting trying to figure out why the fluid just sprayed everywhere when it hit the effector, it obviously ended up being the last thing I ...
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Blender fluid sim only shows particles and cannot show the fluid as a solid or a mesh

I am new-ish to blender and have just started using the fluid options. I can get to the point where I have all my settings for the inflow and I have everything ready to go, but when I bake it, the ...
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20 views

Mantaflow simulation is baking the fluid in the wrong place and at the wrong scale

As you can see from the provided picture, when I start baking fluid in this scene, the fluid flows from the wrong place and at the wrong scale (changing the size of the real inflow also changes the ...
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21 views

Am I the only one with a really finnicky fluid sim?

I'm running blender 2.90.1 on Arch on a Thinkpad E590 and trying to run a fluid simulation for the first time ever (FLIP). I made a very basic mug model (a cylinder with its top face insetted and ...
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I want to know how set fluid in blender 2.8 to no slip

I want to know how set fluid in blender 2.8 to no slip. I can see that in blender 2.7, we need to go to the Boundary tab in the domain settings, but there is no boundary tab in 2.8.
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Disable atmospheric drag in smoke simulator?

I know this is a stretch, but using the smoke simulator, I'd like to simulate a gas moving through a vacuum (space) which means that the gas should not be slowed down over time and should retain its ...
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Emulate realistic liquid inside a bottle for animation

I am working on perfume bottle design. I am trying to create perfume in the bottle. When bottle is rotated, perfume stays static. What's the way to rotate perfume when bottle is rotated, or even ...
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20 views

can I have a fluid react to a rigid body?

I was messing around in blender and made a small course where a box drops onto a ramp and slides down in and then it hits a ground plane and hits some water, but I can't get the water to react to the ...
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Fluid simulation - Domain, i don't have the options

I don't see any of this option in my blender file. I'm trying to make a fluid all over the skull inside the cube. I tried many tutorials, but I don`t have the options for any of that
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fluid rendering in viewport but not final render

All this fluid is completely blank in the final render. I made sure "shown in renders" is checked. Any ideas? Here is the blend file
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Water like simulation through pipes without using fluid physics and baking data

Can someone please tell me how to create this fluid animation without using fluid physics properties in blender. Baking data is lengthy process. Want to avoid that to show such kind of fluid animation....
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18 views

Fluid - Sudden splashes during calm down

I am pouring a liquid onto a surface with the domain as boundary. Domain resolution is 300 and I am working with some viscosity. The inflow is active for 1 second and then I want the fluid to calm ...
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1answer
68 views

Absolute lost at words for how to describe this softbody/fluid?

I recently saw a video THE VIDEO It's of a softbody(i think) cow getting mashed up and broke apart, I have no idea how to describe it so i cant search for a tutorial and the closest thing i found was ...
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38 views

Does anyone know how to make this energy spreading effect

I just need help in finding how to make effect of spreading energy on sword
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17 views

Where are the Fluid Time Start and End in Blender 2.9

I'm doing a tutorial by tutor4u Water Balancing Text Animation. This is an old tutorial using version 2.78. I am using version 2.9. At the 22:58 minute mark he changes the setting for the Start and ...
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1answer
54 views

Blender 2.9 Mantaflow - fluid weird behavior

I am receiving very strange results with Blender 2.9 fluid simulation - even though I am only trying to achieve an effect of the cup falling on the side, the fluid flows in the air unnaturally, and ...
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16 views

Fire disappears in cycles render

I've been trying to render a flame in blender 2.8. It appears fine in my viewport. However, the flame disappears when the rendering is complete and everything turns black. Can someone tell me what's ...
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22 views

Particles generated by fluid sim flickering when rendered

Generated foam, spray and bubbles using fluid sim in Blender 2.90 and also tried with 2.91 Alpha. Using default fluid settings and 256 Resolution Divisions. All cached with VDB, no compression at '...
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Is there a way to achieve two-way coupling in fluid simulations in Blender?

Usually in fluid simulations in Blender (I'm using Blender 2.90 and the fluid sim is done with Mantaflow), the Effectors can affect the fluid is the scene. However, the fluid cannot move any objects ...
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How to control the force of the fluid onto object?

I'm creating a simulation in which flow of water is impacting on an object. problem is it's not impacting the object as strongly as i want it to. The water is just setting on the object and dripping ...
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Fluid, type liquid ignores domain when inflow

Just to start off and explain things, I have two objects one is a ico-sphere which is the fluid emitter and the domain is a skull which I baked both setting and mesh. when I hit play it works fine, ...
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116 views

Fluid Simulation bakes, but cannot see water flow when playing video

I'm very new to Blender. I used it to create a simple water simulation successfully with a domain, collision effector, and an inflow. I'm using version 2.90.1 I've attached my blender file. I'm trying ...
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16 views

Problems With Fluid Simulation

I was following a tutorial and they made the domain a glass like material for water however when I render the image is all over the place because the domain box that I used is glass. Anyone know how ...
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41 views

Sticky Mantaflow fluid simulation

New fluid simulation in recent Blender versions (Mantaflow) does not have any setting for interaction with the obstacles. In result, any fluids, no matter of viscosity, slips right off the surface of ...
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0 (zero) “Foam, Bubbles and Spray” particles in every frame

System Information Operating system: Windows 10 Graphics card: GTX 1050 Blender Version Broken: (2.90.0) Worked: (2.83.3) When I bake the particles, it takes some time as if it is really baking, but ...
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32 views

Lighting up the scene using a fire in cycles

I am rendering a torch light scene which looks something like this in my viewport and this is how I want it to actually look, but maybe a bit dimmer and realistic (for which I'm using Cycles). But ...
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1answer
77 views

Physics Fluid Simulation Not Working

I've downloaded Blender for the first time, version 2.90.0. I've watched multiple videos on how to create a fluid simulation. I've replicated the steps and for some reason, it doesn't simulate when I ...
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2answers
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how to simulate a fluid (not falling)

so i watched a flip fluid simulation and tried it , but its nothing special , the only thing i think folks download it is to get a fluid dropping , which should technically be possible by the default ...
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Why is my fluid simulation mesh wireframe in solid view?

I haven't used blender in a few years, and I've gone back to it to try fluid simulation, so I'm a bit of a noob... I'm using 2.9, I've done my fluid simulation, but it's just showing as a mesh in the ...
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fluid sim with rendered instance particles

im looking to create something similar to this - https://www.instagram.com/p/BZOQ_-XlIqI/ a fluid simulation with rendered instance particles (as in the hair particle system) that will conform to the ...
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How to remove the dark, sharp outlines in this water splash simulation?

I made a simulation where two oranges fall diagonally into the water. In the rendered animation, when the water splashes, dark sharp outlines are revealed. I do not want those weird formations in the ...
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1answer
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Rendering animation not working

I have made a simple fluid simulation in Blender 2.8 and whenever I render it it doesn't work. First I tried rendering it as a png but that just produced 4 images and no video or animation. Then I ...
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Lens settings missing from camera settings

The lens settings such as these, specifically the Clip start and end buttons,: Are completely missing from my panel. This is what I see: Does anyone know why this is happening? EDIT I have found ...
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I've already tried everything but my fluid simulation still not working

I'm new on blender, I'm trying to simulate a liquid in a glass but when I set all for the simulation nothing happen and I don't understand why; I've already tried to apply scale and other forms of ...
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50 views

Fluid simulation not appearing after baking in 2.9

I made a fluid simulation and the fluid does not appear. I have baked both particles and mesh. I also tried to rebake but still, the fluid simulation does not appear. I also am getting errors like '...
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51 views

How to make an object contain water until desired time

I have a simple fluid simulation set up and I'm trying to throw a cube of water at a wall (with the cube's flow behavior set to "Geometry" of course). But of course when I have the cube as ...

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