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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1answer
17 views

Mesh requirements for Mantaflow effector?

I'm having trouble being able to make a mesh to use as an effector with a fluid simulation. No matter the shape I make (cylinder, cube or sphere with the top off and a solidify modifier applied to it),...
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1answer
127 views

How to increase ocean foam?

I created an ocean simulation in which a ship passes and displaces the ocean but the problem here is that the foam is not visible or less visible in camera view. How do I increase the foam cover area? ...
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0answers
8 views

I can't create a fluid simulation when I import my obj model in the same project [closed]

I have this model that I want to create a fluid simulation to pass through it, but for some reason no fluid shows up when I use Quick Fluid. If this is also of help, the model was made with flip ...
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0answers
12 views

My fire simulation doesn't start [closed]

I'm trying to make a fire breathing dragon but my fire simulation doesn't work. When I first set up the simulation and then bring the dragon model, it works, but when i try with the model already in ...
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1answer
43 views

Simple water ball simulation?

So its seems simple enough but I cant seem to get the result im looking for. Its just a spinning water ball like the one seen in Harry Potter. I thought you could just turn off gravity and quick ...
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0answers
27 views

How to make Mantaflow spawn less fluid without resizing source?

I'm trying to get a fluid simulation working so that I can have a character who's basically always dripping (he's kinda made of fluid? It's difficult to explain). I want to use Mantaflow for the ...
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1answer
35 views

What are particle settings for water spray simulation?

I was trying to recreate some scenes from James Cameron's Titanic. I wanted to make this scene look like the ship displaces water and throws water splash particles. I have used fluid simulation for ...
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1answer
11 views

Trouble converting Mantaflow fluid from particles to mesh

After baking my fluid simulation, everything turns out fine except for the fact that my fluid shows up as just a collection of blue particles that outline the fluid and its movement, even in the ...
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2answers
103 views

Fluid domain not baking

I am new to blender and was taking this tut from: Blender Tutorial - Realistic Fluid Simulation to create a sim of fluid. However, the domain remains as it is and does not bake at all. Here's the ...
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1answer
36 views

Why there are black patches visible in fluid simulation?

I created a fluid simulation that imitates a ship moving, creates splashes, and displaces water. I made this scene in a large-scale ocean and I've cleverly made it to imitate that the splashes that ...
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1answer
26 views

How to import numerical fluid particle data to Blender?

I have numerical files output from a c++ program for fluid simulation by solving Navier Stokes equation using particles, the file looks like this ...
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1answer
156 views

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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1answer
31 views

Is it possible to stick fluid particles to a wall?

Is it possible to simulate a glue-like fluid to stick flat mesh wall? I've tried different settings to make it thicker and slower but it always slides down like wet cement. What should I try that ...
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0answers
10 views

How to make a dynamic paint brush from a fluid domain so fluid sticks on effector objects like paint?

Problem Hi! I'm trying to make a paint splatter that gets thrown on an effector with many polygons, and lets the color of the paint stick to the surface it touches based on it's shape, cause that's ...
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1answer
360 views

Fluid simulation pours into the cup in a box shape and won't spill

I was working with the fluid simulator in Blender, and I wanted to make an animation where water flows into a cup and spills out. When I bake the fluid it pours into the cup in a box shape, even if ...
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0answers
13 views

Mantaflow fluid has a very strong irregularity appearing out of nowhere

I'm trying to make an animation of a pipette dropping slightly viscous fluid on a flat surface. Everything seems to work fine, and then at some point the fluid goes all crazy, has a huge speed and ...
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1answer
496 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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1answer
124 views

Fluid particles exploding for some reason

I've tried multiple resolution, timesteps and viscosity settings to no avail, the fluid always explodes in the first frames. These results are with 90 divisions, 8 timesteps max and 6 min, 0,010 ...
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0answers
31 views

My glass with liquid inside looks wrong, what did I do wrong? [closed]

I made a simple cylinder, removed the top, smoothed it, then made it transparent by giving it a material with high transmission following a tutorial. After I used quick liquid to create a liquid to ...
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2answers
595 views

Converting Particles Into Fluid

I wanted to ask if there is a way to convert a particle system to a fluid? Is it possible?
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1answer
69 views

Liquids flows to weird direction. (It flows toward one area of the domain object)

I'm doing some assignment with Blender to use physics simulation, and I found my fluids are flowing to a weird direction. The fluid was supposed to flow downward, because that is how it usually works, ...
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1answer
111 views

I can't find object control in fluid simulation blender 2.82

In the older versions of blender the fluid physics had the option of making an object a 'control object' to manipulate the fluid flow with its shape. Now in 2.82 i can't find this option and i still ...
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2answers
3k views

Mantaflow fluid does not take the shape of a sphere (Blender 2.8)

I created a sphere and set it up as a container for Mantaflow Fluid. I created another sphere and set it up as an inflow object. No matter what I do and how I play with the values, I can't seem to get ...
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1answer
34 views

I want to make some sticky liquid

I want the liquid to stick to the surface of this cube, like fry batter, or rock tar.
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1answer
437 views

How can i create a realistic water material with foam in cycles for a water simulation

So i made a water simulation in blender and applied a simple water material with a glass shader ior 1.33 and roughness 0.1 However it doesent look really good and I would like it to have some foam on ...
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1answer
876 views

Cannot run simulation for smoke and fluid

I've been trying to render smoke and fluid simulations, but can't manage to get the results I'm seeking. The first problem is that the smoke and fluid don't simulate. The second problem is that the ...
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1answer
68 views

Fluid simulator not working in animation

I made a cup and some liquid inside the cup using fluid simulator. The cup is animated thus moving. However the liquid would leak out the cup and would be spilled on the floor. The cup is the effector ...
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1answer
286 views

spray/foam/bubbles not showing in Mantaflow fluid simulation

I have enabled spray, foam, and bubble particles in my simulation, but they don't appear in my renders. Viewport: Detailed, foamy, dramatic crashing water. Render: Boring, blobby, uninspired, and ...
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0answers
11 views

Fire Won't Render Properly

I've seen this question a few other times, but I've tried every solution I've found and nothing has worked. Followed a tutorial to create fire, and everything works except that mine won't render ...
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1answer
72 views

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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2answers
109 views

suspend/sleep while blender is running

I hadn't used blender for several months and previously when it was running a fluid simulation overnight Windows would not go to sleep. But last night my computer went to sleep. This is blender 2.93,...
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0answers
24 views

How can I save a frame of a mantaflow simulation and use it as a mesh?

So I’ve done a mantaflow fluid simulation, but I want only 1 frame of it and use it as a static object, is there a way to do that? I’ve tried hitting the convert button but that’s converting every ...
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2answers
277 views

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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1answer
18 views

Liquid Stabilisation?

After recently starting liquid simulation, I wanted to know how to stabilise the liquid after it is poured into another object(collision object eg. cup). No matter how many extra frames I give it, ...
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0answers
6 views

How to separate fluid bake from foam bake

So I've finally come around to exploring Blender fluid simulations as part of a new project I'm working on, and running into some trouble that for some reason I cannot work out through watching ...
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1answer
693 views

Fluid sim not colliding with effector

Okay, a pretty simple problem, you can see the fluid sim is passing through my effector. How do I fix that? So far I've tried flipping the normals, adding and applying a solidify modifier, and ...
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1answer
21 views

Mantaflow doesn't look like water after baking

I'm fairly new to blender, and am trying to follow a tutorial with some fluid simulations. Every tutorial i see, once the fluid simulation is done and they go to rendered mode, it already looks like ...
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2answers
297 views

How can I make my liquid look like tea?

I'm following the donut tutorial from Andrew/blenderguru and got to the point where he makes the liquid coffee. Since I usually drink ice tea I tried to make the liquid look like tea instead, but it ...
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0answers
23 views

Fluid Sim/Rigid body issues

I should probably start out by saying that I am fairly new to Blender. So I am trying to create just a simple ball rolling down some platforms while emitting water that interacts with the platforms. I ...
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1answer
183 views

FlipFluids & Ocean modifier as displacement. Baked frames in 3D view show all movements but rendered animation not. Manual keyframe ok. Any solution?

I have created a FlipFluids simulation in Blender 2.81 ( 2019-11-25 21:45) and added an Ocean modifier in displacement mode to the fluid_surface. Then I have baked the complete sim from within ...
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1answer
16 views

Why does my fluid have all this colors after baking? I assume it's a density/ velocity map but don't know how to disable it

Even in render view mode this colors appear. When taking a closer look they are actually particles on top of the liquid.
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1answer
28 views

Blender fluid simulation not working after following step by step guide

i want to create a fluid simulation, but it didn't work as i expected. I was following this tutorial by CGCookie: https://www.youtube.com/watch?v=6B0QM4Cft5c&ab_channel=CGCookie First, I created a ...
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1answer
110 views

How do I change fluid material in a simulation

Been at it for a couple hours every youtube video they already have a material on their fluid but mine is just a bunch of particles not a liquid, I have 0 experience in liquid animations so any help ...
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1answer
726 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
18 views

Problem with smoke domain when resizing

Trying to create fire sim but ran into a bit of a problem. The fire domain doesn't encompass the area that I want it to but whenever I resize it and then re-bake it the size of the fire ball also ...
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1answer
18 views

Generating waves with fluid sim in 2.9

I would like to generate waves for my scene. But my wave generator is currently not working as I would like it to. As You can see the water seems to be compressed somehow and no waves are generated. ...
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1answer
174 views

in my simulation some of the water is stuck on walls blender 2.82

so i tried water simulation (pouring water in glass) and the water is almost stuck in the wall and wery slowly going down blue particles on the picture blender: 2.82
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1answer
366 views

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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1answer
28 views

Animating scale of Inflow object doesn’t work

I'm trying to make fluid slowly become a trickle and then stop (ie not animate the "Use Flow" button). I'm a mid level user of fluid simulations. So following this tutorial https://www....
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1answer
47 views

How can I slow down a particle driven smoke/fire simulation?

I am working on a flame simulation that is driven by a particle emitter (Emitter > Flow Source) and everything has been going fine. The only problem is that the simulation is going EXTREMELY fast. ...

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