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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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93 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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266 views

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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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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29 views

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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1answer
48 views

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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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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50 views

how to create fluid simulation in glass?

how to create fluid simulation in glass?
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1answer
48 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
130 views

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
40 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
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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
26 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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272 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
41 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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123 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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25 views

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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21 views

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
84 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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76 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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55 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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120 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
123 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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38 views

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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69 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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196 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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27 views

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 ...
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109 views

Procedural Materials On Fluid Simulations

Been struggling with this for a while. I've made a procedural lava shader and I want to put it on a fluid sim. The problem is, all the mapping methods I've tried make the fluid travel through noise ...
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0answers
26 views

Fluid being absorbed by a plane (cloth) [duplicate]

I want to make an animation similar to the gif, i want a drop (of water) to fall and to be absorbed by the cloth. I have the cloth texture and a fluid simulation with dynamic paint that creates the ...
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30 views

The top of the fluid disappears if I turn resolution above 80

Whenever I bake this fluid sim for a beach at a resolution lower than 80, it works fine. But whenever I turn the resolution of the fluid up to a number above 80, the top of the fluid disappears. Does ...
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34 views

Fluid disappears on the first few frames

I can't figure out why the fluid just completely disappears on the first few frames. It's happened on the last 3 tries for a beach project I'm working on. Here is the file: Also I have tried deleting ...
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54 views

Blender FLIP Fluids collision problem

i am doing the beach scene using FLIP Fluids in 2.79 i have collision with the geo the fluids are sticking to geo i have tried many methods but it didn't work is there any solution ?
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39 views

Fluid domain floats in a cube?

I baked a fluid simulation with a cup pouring water into another, but there seems to be an invisible cube around the domain. It doesn't drop into the other cup for some reason. These are the physics ...
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Multiple particle systems are glitching all over the place?

Ok, Im in Blender 2.8 if that makes a difference but the main issue is getting multiple smoke simulations to work in the same scene. Since this is 2.8 Ive looked at past questions like Is it possible ...
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41 views

is there any way to get to velocity of a fluid and use it in the cycle material editor

I'm trying to use flip fluids to make lava is there any way to use the motion blur vectors, or get the velocity to mix a material. or in the script editor is there anyway to drive that.
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1answer
58 views

Fluid simulation only shows the domain

I was making a fluid simulation, but when I try to bake it, it only bakes the domain. The fluid doesn't appear from the inflow. Do you know why? Thanks. This is what appears when i render
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How to Create Shaving Foam in Blender 2.8

I really need to create a shaving foam shot for my final university short film, if anyone can help me with some professional techniques here are the storyboard images : Thanks in advance, Best ...
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2answers
100 views

Rigid body physic simulation error?

I want to create an animation with a ball that hits a lot of boxes. The movement of ball must happen in a few fractions of a second > 5 frames: here is my blend file v2.8, same bug in blender 2.79 ...