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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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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Is There a Adaptive Domain For Fluid

Is there a adaptive domain option for fluid as is takes a long time for the some simulations to finish. From what I have seen with smoke simulations and adaptive domains I believe this that if we were ...
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15 views

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
15 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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33 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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20 views

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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15 views

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
21 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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26 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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16 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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17 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
55 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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33 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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31 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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34 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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22 views

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
72 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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26 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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28 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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52 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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12 views

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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20 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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18 views

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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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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25 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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22 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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29 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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21 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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19 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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35 views

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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33 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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38 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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42 views

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
50 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 ...
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1answer
82 views

Fluid Simulation, make the fluid to be absorbed

I have a fluid falling on top of a plane. I want the fluid (water) to be absorbed by the plane, like a cloth would do. How can i do that? Thank you
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Export fluid simulation for usage in three.js

Is there any possibility to export a fluid simulation as an animation and import it in three.js? As I read in some threads it seems to be impossible to export a fluid simulation to a gltf, so I ...
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14 views

Is it possible to use a fluid mesh as a domain for another simulation?

I thought it might be a cool effect to have a smoke simulation inside of a fluid simulation. If the liquid shifts or separates the smoke behaves accordingly as its domain has changed, maybe swirling ...
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17 views

How to make Hair interact in a water Sim? [duplicate]

I am trying to make hair move realistically under water...so I did a little test by simulating drops of water fall on a sphere with a hair particle system also set as an obstacle in the water Sim but ...
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30 views

Would it be possible to create a bleeding wall/object effect in blender?

I'd like to create a fluid animation of blood/dye running down a wall something like the effect they have on the music video 'Dean - Instagram' however It seems like the effect in the video is ...
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4answers
352 views

How can I make drops of fluid hang from a surface?

The images below display the kind of effect that I'm looking for. A combination of surface tension and intermolecular forces make drops of water hang on things (though they may occasionally fall off ...
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28 views

Can fluid or smoke be simulated using particles instead of a fluid or smoke sim? And if so, how?

I was watching Disney's Practical Guide to Snow Simulation and towards the end of the video there was a section on using an MPM for more than just snow. This got me thinking, can particles be used in ...
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1answer
26 views

Fluid simulation not working after parenting to animated object

I know this is a common question, but I already tried Apply Transform and checking properties of the fluid simulation. I got fluid working and rendering fine and the final step was animating the ...
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24 views

Why is my fluid sim is phasing through the obstacle?

I was trying to do an experiment so that my fluid would stick to a surface in little droplets (i.e. like water when it touches most surfaces because of intermolecular forces and surface tension). ...
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1answer
142 views

How can I create a soft, fluid filled pod that can rupture?

I was watching a trailer for an animated short film and there was a moment when a green pod split open and a person fell out, along with a bunch of fluid. I've set up the link so it begins on the ...
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21 views

Fluid doesn't fall

I'm quite new in blender but this is really strange, please help! I want to simulate water flowing between letters and I have two issues: the water doesn't fall down but stays at distance from the ...
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18 views

Fluid Simulation stops for one frame

My fluid simulation turns into the domain (a cube) for one frame, and then the fluid simulation carries on like normal. This happens twice throughout my simulation. I have no idea why this is but it ...
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25 views

Fluid Simulation Obstacle clarification

This Blender Manual link https://docs.blender.org/manual/en/latest/physics/fluid/types/obstacle.html states Impact Factor Amount of fluid volume correction for gain/loss from impacting with ...
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1answer
21 views

Fluid increase speed over time

I have my fluid physics setup like so How can I increase the "speed" over the course of the animation? I'm trying to mimic a garden hose being turned on.
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What fluid obstacle movements cause the majority of fluid to disappear?

This is a narrow question, so your narrow answer is appreciated. At this point I do not want to include a picture. A fluid simulation was working well enough in timespan A. In timespan B an ...