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

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 watertap inflow gets enabled (is animated on). I ...
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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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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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Newly developed stand-alone fluid simulation engine: How to integrate into workflow with blender and other 3D apps? [closed]

I'm developing a new fluid simulation engine that can be used for very large scale scenarios ( based on sparse, adaptive multiresolution techniques for grid resolutions of up to 4000x4000x4000 on ...
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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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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 ...
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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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Fluid being absorbed by a plane (cloth)

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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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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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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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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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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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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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
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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
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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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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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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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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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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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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
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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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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
133 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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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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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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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
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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 ...
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Problem rendering Fluid Simulation

I tried Blender for the first time yesterday. I wanted to mess with the fluid simulations and it worked. I used a tutorial and everything turned out fine except when I wanted to render the result. ...
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Why does the fluid simulation break and not even bake the full time line?

Im trying to follow CGGeeks wave tutorial, but for some reason my simulation begins to break (as shown in the picture). Other times it doesnt even bake all the frames and stops around 100. Can anyone ...
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Why this fluid simulation wont bake properly?

Why this is happening can someone explain.please? I even applied scale to domain and inflow but still this happens.
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Fluid Simulation Domain appears to be reading from two different directories. Is there a remedy?

Fluid simulation domain object called domain for short. We are reading the cache files .. Not Baking for this discussion. Expectation. When the cache files being read are exhausted then I expect to ...
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Fluid Simulation Outflow behaves unexpectedly. What are possible remedies?

A fluid simulation has one or more fluid outflows. One of the fluid outflows does change/delete the fluid, yet only at the boundaries/surface as depicted above. The expectation is any fluid should ...
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1answer
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Fluid simulation wont happen in a small pipe?

Fluid simulation won't happen in my model pipe. I Got a project from my client in which fuel must pass through a pipe. so I tried to do the simulation but the simulation won't happen. I tried scaling ...
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Flip Fluid simulation throwing a specific error with no console output

I am attempting to bake a fluid simulation using the Flip Fluids addon. When I attempt to bake the simulation, I get the following error: I have encountered this error previously, when resizing the ...
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1answer
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About “Enabled(Object contributes to the fluid simulation)”

I'm sorry, my English is not good. The following sentences are translated by "Google translate". Also, I am Blender beginner. My question is about Fluid-Control. It seems that Control(gravitational ...
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Can fluid simulations have dynamic resolution or topology?

I have a low poly animation of someone getting baptized in water, so I used a low res water simulation so my work could be a little bit easier. The results were ok, but not what I really wanted. The ...
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1answer
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Object showing only in render and not in viewport even though visibility settings are correct

The fluid sim obstacle is visible at the top of the monitor. Before this render I turned made sure that render visibility was set to off. Viewport view, the obstacle is invisible whilst the ...
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How do I simulate fluid in the BGE?

I am trying to make a game where a player can drive a car. I want to have a lake that the car can drive into and splash. I am not very good with the game engine especially at coding. If I can't ...
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Blender Snow Simulation

How to Create This Snow Simulation.