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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9 views

Mantaflow not going hires

I'm using the blender 2.81 mantaflow beta build and, I've set up a smoke scene and, as I understand it, the "Noise" setting is the equivalent of the "High Resolution" setting before so, when I check ...
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Mantaflow Timeline [on hold]

Everyone is talking about mantaflow and incorporating it into blender master, but I still don't see any progress with it actually being included. Do we have a timeline for that? Of you could also ...
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Mantaflow - Particles

I use mantaflow to simulate fluid, then this the results. 100 frames, default settings baked data, ok baked mesh, ok baked particles, 0 particles generated question : why no particles? what and how ...
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Physics tab: no fluid options 2.8

I selected the domain object of my fluid, I already baked once and now want to make changes and bake again but no options are there. I already tried restoring the cashe_fluid data, the baked mesh ...
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+50

How do I make more complex LEGO simulations in Blender?

In the lego movie, the fire, water, and smoke is made of lego bricks. It's not just a simple method of having one type of brick, several different bricks and brick slopes are used to get a really ...
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uhh why does my fluid acting up like this? it was working before, the fluid came from the circle but now it looks like this, check the photo

I was just following a fluid tutorial and i tried it with a simple donut, it was perfectly fine at first but i feel like the result is very bad so i took a nother try. When i try to bake the fluid ...
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Fluid Sim won't bake with control object

I have a very basic scene that bakes. However, as soon as I add in a control object it won't bake? Is there anything special you have to do for a control object to make it work?
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1answer
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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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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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1answer
81 views

Lego Water with Dupliverts doesn't work!

I made a fluid object, I made a brick object. I set the fluid object to dupliverts in the object panel and added a remesh modifier set to blocks. I selected the brick, held shift and selected the ...
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40 views

Nothing is coming from fluid inflow in Blender 2.8

I cannot get my fluids simulation to work. I am having the same problem in both CentOS Linux and Windows 10. I have tried decreasing the size of the domain and increase the size of the inflow, as well ...
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In Blender 2.80, when i try to bake a fluid simulation using flip fluids, it gives me the error 'Cannot find fluid engine library: libblpyfluid.dll'

When I bake a fluid simulation in FLIP Fluids(which a built from source using Visual Studio 16 2019),it shows the error Cannot find fluid engine library: libblpyfluid.dll. I really want to use ...
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Blender Render Engine Bug

Im trying to render a scene but when i try to render it, it shows me a previous render i did with eevee and the aspect ratio is also different, i tried rendering using both eevee and cycles but it ...
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Why fluid passes through objects when fluid-simulation?

Is be two object is obstacle in Fluid domain. However, even though the value of 'Volume Initialization' is set to 'Shell', when fluid simulation is performed, the fluid passes through the objects. I ...
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1answer
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Fluid failing to enter side channels in Blender 2.80 fluid simulation

I have a fluid sim under Blender 2.80 which requires liquid to flow into a main structure and fill side channels off (imagine underground passages flooding or a storm drain backing up). Past a ...
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Fluid simulation and Particles final render are totally different

I just created a wave simulation using fluid physics. I also added some fluid particles on it. It looks like this in the live render with Eevee: but when I render it looks like this:
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What's wrong with my fluid simulation…?

I've been following this Blender Guru tutorial - https://www.blenderguru.com/tutorials/introduction-to-the-fluid-simulator - however, mine doesn't appear to be working properly. I'm not sure if there ...
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Submerged inflow doesn't add to fluid volume

So if you position your inflow inside the fluid, or where it's going to be submerged after a while, it stops producing fluid volume. Funnily enough, I've encountered the problem with both Blender ...
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Basic fluid - inflow too small to generate fluid or generated fluid too thick

I'm setting up a fluid simulation, and it seems like inflow is too small to generate any fluid, or generated fluid too thick(too much). This is the setting of the simulation: Inflow Volume ...
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26 views

How To make fluid human model and slowly dissapear?

i've been wondering how to make the scene like image shown At the first image, the character is fill with fluid, then the character melt down. Can this scene be done in fluid / flip fluid blender ? ...
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40 views

how to create fluid simulation in glass?

how to create fluid simulation in glass?
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1answer
24 views

How to properly set domain for fluid simulation?

I am trying to create a domain for fluid simulation in blender. But as soon as I apply the domain physics on the (cube) object, it transforms into some fluid like mesh. If I press play, it seems as if ...
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2answers
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Fluid simulation - filling up a letter

New to fluid simulation, and I'm having trouble setting this up: I have a text, a letter "O", that I want to fill up with water - going for a spurt of water to come jetting in from the bottom and ...
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Why is my 2.8 water simulation 'tearing' into small pieces?

Why does my water simulation look so terrible? My whole mesh is tearing into small pieces. Are my settings wrong?
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How do I stop fluid from “magnetizing” to an obstacle

I'm testing out different fluid properties and whenever the fluid comes in contact with the obstacle it magnetizes to it. It starts out like this when it's not in contact But when it's in contact ...
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1answer
32 views

Fluid simulation not generating fluid

I have a scene set up where the fluid generates from a "fluid" type. (not inflow or outflow, etc.) The fluid does not generate, it just makes a thin sheet at the top and corners of the spawner. It is ...
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1answer
27 views

Fluid going through an obstacle [duplicate]

I couldn't find an answer anywhere else, so I'm posting here. I have a fluid simulation that works well mostly, but it is going through part of an obstacle. This obstacle is a corridor that holds ...
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My fluid stimulation renders in a circle but shows up as fluid in object mode

I really need help when I render my file the fluid shows up in a cube. It shows up fine in object mode it’s when I render it
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Fluid Simulation not working/glitched

hopefuly one of you can help. Im trying to create a fluid sim. Im trying to create a pipe. I add a circle and set the fluid type to be the inflow and set the inflow velocity and then add the domain ...
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1answer
20 views

Fluid tap isn't showing

The fluid tap isn't showing for some reason, while all the other physic taps will. it still won't show even if I only select fluid. I just click others to show that only fluid isn't showing.
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1answer
120 views

fluid simulation in blender 2.8

I am using the current version (2.8) blender. No matter what I try, fluid stimulation is not working. Initially it would not bake the simulation. Now even though it bakes, there is no output. Domain ...
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why does animating “flow” checkbox slows a fluid simulation baking?

When I have no keyframes on my "flow" checkboxes, and baking a fluid simulation, it takes 80 seconds to bake my simulation (Blender 2.8). But when I have keyframes (just one ON key then a OFF key); ...
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1answer
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fluids simulation : do not fill domain?

I'm trying to generate a realistic rain using fluid simulation (I need realistic droplets). I was wondering if it is possible to "emit" fluid from my inflow objects without having it filling its ...
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2answers
34 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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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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Weird shape in fluid sim

I'm having this weird problem. The fluid in contact with still obstacles object always has this incline along the edge, like a part is cut off. I've tried adjust all the settings and tried different ...
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Fluid Edge not baking correctly (air bubbles problem?)

I am attempting to follow the beach tutorial here: https://www.youtube.com/watch?v=OHg-CHcflPM but when I bake my fluid, at the shallow end of the beach it does not bake correctly and does not attach ...
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1answer
65 views

creating a dry fountain

I am trying to create a dry fountain in Blender (see the reference image). However, I have no luck so far. I've added a small circle to my scene, which I made the inflow for the fluid simulation. I ...
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54 views

Is Underwater hair simulation possible

Is it possible to make underwater hair simulation? I haven't tried it yet, but is it possible for hair particles to react to water particles?
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36 views

Stop fluid inflow without droplets

Apologies to bother with this question seeing there were a few suggestions the site tried to give but all of them seemed years old and don't seem to be working. On blender 2.8, I've been trying to ...
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56 views

How come fluid domain cube visible after baking ? (with keyframing render domain)

update: i used schaling to work around this. I have a watertap simulation that I am working on. Only the problem is that when finished baking the domain cube is visible until the moment that the ...
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Fluid physics won't work inside hollow object

I'm really new to this program and just got into the physics simulations. I'll attach the blend file but this is the basic idea: I have a hollow apple with a bite in it that's floating above a ...
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1answer
95 views

Why does fluid stick to the outflow object?

Just setting up a basic fluid simulation with an inflow object and domain. The problem is that the fluid seems to stick to the inflow object, and when drops fall, they hit the bottom of the domain and ...
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long string goey fluid like a alien movie

I want to "hang" the liquid string which ejected between two columns. like super gooey alien mucus. I experimented some settings but it is not enough viscosity. https://www.youtube.com/watch?v=...
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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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119 views

fluid bake button is grayed out

OK so I followed a couple of youtube tutorials concerning fluids and got stuck each time because the bake button is grayed out. What am I missing?
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Connecting fluid sims with dynamic paint displacement

Dynamic paint has a displace section where it moves the vertexes of a mesh, and I've used that to create a footprint going into the ground. However, I want the foot to step into a puddle, create the ...
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Why is fluid phasing through obstacle? [duplicate]

Hello Blender community. I'm new to Blender and I use this site often to find answers to questions I have about the software. However I've decided today to ask a question of my own. I'm well aware ...
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If I don't have enough ram can I still bake my fluid simulation

If I have lats's say 8gb ram 6 gb is free but baking the fluid simulation will use 7gb would it be possible? Also if not are there any alternatives that I can use.
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Fluid simulation giving an instant -x velocity

Here is my animation at frame 849 ( the frame before my fluid sim starts) and here is my animation at frame 850 (the first frame of my fluid simulation) After this, the fluid sim acts as expected ...