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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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Speed of baking fluid simulation slows down drastically

When baking a fluid simulation the process slows down. The simulation has object of type inflow and object of type control. The speed of baking will go down from rate 1 frame/min to 0.06 frame/min ...
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Using a Character Mesh as a Fluid Obstacle

I'm trying to use an imported character mesh as a fluid obstacle. The only way I can get it to actually act as an obstacle is to select "Export Animated Mesh" in the fluid obstacle settings. (...
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12 views

fluid simulation fluid control. What are proper expectations?

Question What should be expected to happen in the following situation? A fluid control in some random shape such as asterisk character mesh or torus mesh is placed within the bounding box of a fluid ...
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1answer
26 views

Domain stays a cube when baking?

Whenever I bake my domain, it stays a cube. It does work when the fluid object is outside of a hollow obstacle I've placed it in. I've recalculated the normals, and tried resizing the domain, but ...
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47 views

How to make water wall effect?

Go you have any ideas how to make this sort of an effect? I've tried to achieve this using water simulation, but it didn't turned out well. Using a texture looks like rational, but I have no idea how ...
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1answer
18 views

Blender Compressibility Unit Question

What is the unit of compressibility in Blender?
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1answer
83 views

How to make a water vortex

I'm very new to Blender and I'm trying to make a water vortex like this.(may be not the easyest first project for a newbie) I watched several tutorial on liquids particle etc but I'm not sure what ...
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1answer
21 views

Obstacle on path does not interact with fluid

When I animate the obstacle with keyframes and in the animation the obstacle goes through fluid, it interacts. When I do the same with obstacle following the path, it does not interact. Am I missing ...
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1answer
73 views

How to create a rope [duplicate]

I have a buoy on the surface of a fluid simulation that moves around. It has no Rigidbody attached, only a few rotation and location constraints which should cause no problem. I am wanting to create ...
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33 views

Fluid is not coming out of the inflow

I am trying to make fluid come out of its out flow like a hose but for some reason the fluid appears in random places and drops to the floor instead of coming out of the out flow How do i make sure ...
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14 views

Fluid bake not working on higher resolutions?

I was watching this video: https://www.youtube.com/watch?v=zmw-BTCbWMw I have used all the same settings as the tutorial. However, when I change the fluid's resolution from 70 to anything above ...
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1answer
23 views

How to create a solid stream of liquid?

I'm new to blender and I want to create more things with the fluid simulation but it's not coming out like a faucet, instead it comes out in these globs is there a way to change this? P.S: I also ...
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16 views

How do I expport a water simulation via FBX? [duplicate]

Imagine a scene where a rigged character pours a drink from a tap into a glass then jumps into a pool to then see a tsunami heading for his home as he's drinking his beverage. How do I export these ...
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9 views

Keyframes in Fluid Simulation [duplicate]

I am making a water animation to export to unity. How do I add keyframes to fluid animation so that I can use that animation in unity ?
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19 views

Why don't viscosity fluids flow on surfaces correctly?

I am trying to make a fluid with very high viscosity (like honey, chocolate, glue, etc), but every time I go cache it, the ends of the fluid "wobble" around all weird (especially when it hits ...
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1answer
358 views

Liquid simulation sees obstacles' rotation correctly but not their location

I'm having a problem with a simulation, where an obstacle and an outflow are being moved by a parenting relation to an empty, and some fluid should be interacting with them. The obstacle is a glass-...
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2answers
95 views

Why puddles instead of water flow?

I was following this tutorial. I created: circle as water source, pool, domain. I selected Cycles Render; Objects have following settings: water circle: fluid type - Inflow, Volume - Shell, y = 1; ...
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18 views

How can I create a dip molding process in Blender?

I want to create an animation including something similar to dip molding process: An object goes inside a highly thick/viscous liquid and comes out. Some of the liquid sticks to the surface and then ...
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0answers
9 views

Problems with Fluid Simulation baking / cache

Recently today, I created a fluid simulation. I baked through it a few times, updating the settings to get to what I wanted. I reached a desirable effect. Then the fluid simulation baking stopped ...
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13 views

Fluid domain dimensions are different in Edit mode from Object mode

I am building a beach scene and have a strange thing happening to my domain. Basically the domain dimensions are different when I switch to edit mode. I think I scaled the cube once it was a domain, I'...
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10 views

Fluid Offset issue

As a test I decided to try using positive offset to start the fluid sim 50 frames Before the start of the animation, allowing it to be partially, or wholly done when the animation began, it worked in ...
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1answer
16 views

Inactive Fluid flat glitch

I am animating a fluid simulation that's supposed to be used for an animated simulation of 'the floor is Lava', the details are unimportant. What is important is that to ensure the items that fall ...
2
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1answer
49 views

Fluid ignores obstacle

Hello I am trying to make something like this https://www.reddit.com/r/Simulated/comments/8rt6wx/frosting_a_cake/ (I know this uses flip fluids addon, I am trying to recreate something similar with ...
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20 views

Blender constraints objects fluid obstacles require export mesh

I have seen that when using export mesh I often get undesirable results being maybe the fluid becomes little rolls or other weirdness. I have seen when keypointing a duplicated object as the obstacle ...
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40 views

Water is Visible to outer surface of pipe

I am Simulating Fluid flow in Blender (See Image). The geometry is imported as .stl (Obstacle, Partial slip=0.6) and water has been added in the tank as fluid. It is a free flow from tank. The current ...
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1answer
74 views

Fluid simulation in moving object

I am working on animation in which I have moving object filled with liquid. Problem is that liquid is reaching over the mesh. Scaling does not fix the problem since the liquid does not follow up the ...
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2answers
46 views

Water simulation does not flow into the bucket

I wanted to make a simple scene where water is flowing into a bucket. I had set the domain nicely outside the obstacle i.e., the bucket and a small uv sphere as the inflow. After that when I bake it, ...
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0answers
11 views

Bake Fluid to affect Cloth

I was exporting the fluid as an .abc file and then reimporting it, hoping I could have it collide with my cloth. I know that the cloth would not affect the fluid this way but I thought the fluid could ...
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26 views

Flowing tears on moving head

As the title says, I want to have tears flowing from a pair of eyes but I seem to not know how. What I tried was to have a domain cube cover the head, the head (which isn't a separate mesh from the ...
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1answer
22 views

What should i do if my fluid falls through an object?

I want to make a shoreline scene, but my fluid always falls through my "floor". I dont know why (it's my first time with fluid sim). Does anybody know what the problem is?
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11 views

What is the scaling behavior of fluid simulations?

Blender's fluid simulator has an option to select the number of threads the simulation will be run on. How well does a typical fluid simulation scale in Blender as you increase the cores available? ...
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1answer
70 views

Nothing happens when baking fluid simulation

Blender File: https://www.dropbox.com/sh/f5t132aukwqmg0l/AADiffjRgnVy7CMPK-VkSs7Va?dl=0 I'm attempting something similar to this (https://youtu.be/Gk0uhBcLknQ?t=6m24s) (link should start at what I'm ...
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1answer
18 views

Fluid not working, stuck at midair

I've set a simple scene, big box containing everything set as domain, container inside the domain set as obstacle, icosphere at the center as inflow (shell, like the obstacle). What i got is this ...
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1answer
31 views

Make Fluid disappear

I am currently modeling a sword for a friend and I would like to animate a bloodline in the center of the sword... now is my problem, if I would do this by using a fluid, the fluid would be supposed ...
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1answer
82 views

Make an object stop interacting with fluid

I'm trying to make a mug disappear, so that all the fluid inside spills out. I'm using Fluid sim modifier for the coffee inside the mug. I'm having trouble getting the mug to disappear such that it ...
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34 views

Blender Fluid Simulator

I created a fountain and added a fluid simulator but when i tried to bake it. It started baking but the nothing happened to the domain or any of the object. I tried many things as reducing or ...
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1answer
32 views

Preview and Final Render Materials are Different

In my node editor I have the following Materials set for the water which is made with a fluid simulation. In the preview window it looks like this (Which is how I want it.) Then when I render out ...
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39 views

Fluid Object holding large quantity of hidden residual fluid. Picture included

I am having trouble with a project that is using fluid, I replicated the issue in the blend scene photographed in it there is a small inflow that shoots 3 tiny blasts of fluid on an object, a fair ...
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24 views

Blender (fluid) particles floating around then dissapearing

My blender particles (the arrows) are linked to the top plane with a ParticleInstance modifier, which is supposed to make them fall in a rain-like fashion. However, the arrows are moving oddly and ...
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1answer
100 views

Hair Particle system and Fluid Simulation interaction

Making a scene with grass made with a hair particle system in a fluid simulation. I was wondering if there is any way for the hair particles to be able to sway based on the fluid simulation. If so how ...
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1answer
17 views

Fluid is not simulated at the target location

I've tried to set the S mesh to be a fluid or inflow object and have created a large size domain around it. However, the fluid is generated in the top left corner instead of around the S mesh. How do ...
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1answer
114 views

How to make my water look Murky?

Blender noob here again! I'm working on making a Swamp scene and I'm curious how I can make my water look murky/smokey. Would I need a smoke simulator in the system too? Or is it a materials thing? ...
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1answer
14 views

Better way for stopping simulations on timeline?

I have been working on a lot of fire and water sims for a project. The problem I am having is after baking the sims and then playing them back to see how it looks, the timeline gets "frozen" while it'...
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20 views

Copy Location for Object not working for fluid inflow, transforms don't change

I am asking for a little bit of help. I have a scene where a fluid inflow is dropping liquid. If I manually animate the inflow to move in the scene via keyframes it works ... No problems. The ...
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0answers
23 views

Liquid Simulation How to Stop Interaction with Grid Floor

Honey undesirably and mysteriously interacting with the grid floor. I've tried unchecking the box for grid floor display to no avail. The honey sticks to the underside of the grid floor. How can I ...
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1answer
100 views

How to melt an object then reverse the melt into another object

Hi I am trying to have a text that says "Hi" then melts into liquid, then that liquid reverse melts into text that says "my name is" then melts again. Does anyone have any idea how i can do this?
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1answer
41 views

Boolean modifier - surface vanishes

Situation: I am trying to animate boiling water. I based my idea on this youtube tutorial. Basically what it does is: Bake fluid sim of drops falling into a fluid object Rotate the domain by 180 ...
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1answer
90 views

Fluid simulation stuck

I am new to blender. I am trying to make a simulation of a fluid that comes out from a pipe. However, it looks like it's stuck at the pipe, even though some of fluid comes out. Its weird. My pipe has ...
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1answer
85 views

change the fluid amount in inflow

I want to make the fluid go to the end of u. These are my inflow and domain settings. But the fluid is stooping here. How can I solve it? please help.Thanks in advance.
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how do you melt an object in cycles?

I am trying to make an effect where you have a chair or something (I am starting off with the Suzanne head to keep it simple at first) that is sitting on a table then just melts. The objects will ...