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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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1answer
10 views

floating fluid with force fields

Is there any way I can make fluid float in the air with force fields? I am trying to replicate this: Also, is there any plugin that would help?
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1answer
20 views

Mantaflow not baking fluids

So, I've created a simple fluid scene in blender (Domain, Inflow object etc.) but, nothing happens. I could do fluid with Mantaflow 2.81 Mantaflow branch back when I had it but, they've changed some ...
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I have been trying to view my rendered animation, after rendering

So I created a fluid simulation, baked it, set all the textures, baked it again, then I pressed render animation (after changing the proper settings) it has finished rendering the animation a few days ...
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0answers
30 views

Fluid bake at 1024 quality?

I have been using Blender's fluid physics for a while now, and I have been wondering if it is actually possible to do a fluid bake at 1024 quality. What would this look like, and how could I achieve ...
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1answer
104 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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2answers
418 views

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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0answers
27 views

Rendered image is different than the frame in the baked fluid simulation. Blender 2.81

I have baked the fluid simulation and when I started rendering the animation, initial frame render the geometry as baked and next frame look different. If i render single image not an animation then ...
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1answer
25 views

Physics simulation and image plane

I am trying to make some 3d video effect. Is it possible to apply physics simulation on an image/video plane such that it interact with other objects in the scene? E.g. can a video becomes fluid and ...
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1answer
73 views

How do I make the domain bake the fluid object?

I'm following Blender Guru's guide for Introduction to Blender's Fluid Simulator and I have everything all set up, a cup with an object inside of it and a cube. The cup is set as an obstacle, the ...
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1answer
33 views

Blender 2.82 Fluid Simulation can't resume baking

I have simulated a pool of water and was baking the mesh for the water. My system crashed and I could not resume baking. I backed the mesh folder up and freed the mesh. I put the files back in place ...
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3answers
44 views

Baking physics on several machines / Combining cache

I have a smoke animation in blender. I wonder if it is possible to split the baking process of Physics / Smoke Simulation on several machines. Can I run part of the simulation like Frame 1 to 100 ...
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1answer
142 views

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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1answer
63 views

Multiple bakes are not working

I'm stuck with a situation in my animation for fluid effect. The first time i baked the scene to check rhe results of how things will be. Then I added another object as obstacle in my domain and baked ...
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0answers
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Calculating fluid inflow to a rigid body

I have a fluid simulation that has an inflow object whose position in the scene is calculated by the rigid body simulator. Now what I want is the fluid in the simulation to continue to come from the ...
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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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2answers
609 views

Fluid Simulation is not working when a object is used as fluid obstacle

I am trying to simulate the fluid in a pipe. The fluid obstacle object (pipe) is converted to mesh from a path. I have set a fluid inflow at one end of the pipe and fluid outflow at one end of the ...
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0answers
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Mantaflow in Blender: Help with understanding the vertices values in the generated mesh files

I'm currently trying to acheive the following: I'm using Mantaflow + Blender to create a fluid simulation. Then I'm exporting it as Alembic, and import it into Unreal Engine (Aka ue4). In UE4 I want ...
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1answer
66 views

Documentation on the mathematical models used by Blender physics engines

I need to know which mathematical models Blender uses during rigid body simulation and fluid simulation (e.g. Lattice Boltzmann). Is there something like that in the Blender manual or do I need to ...
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0answers
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More bubbles in fluid simulation

I am making a fluid simulation similar to this: I want the fluid simulator to create bubbles like in the picture. Blender fluid already creates a few small bubbles, and more depending on the quality ...
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1answer
33 views

Fluid Sim and Particles

So I have set up a particle emitter and a fluid sim, the emitter particles do not interact with the fluid even when I set the emitter as an obstacle, also tried setting the object as an obstacle but ...
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1answer
35 views

Physics: Liquid Splashes too much

I have a problem with physics. I am trying to make a spoon removing a fluid in a cauldron. The problem is when I introduce the spoon into the liquid the liquid splashes a lot. I tried changing a lot ...
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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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1answer
24 views

Why does my Fluid simulation look like there is a floor where there isn't one?

I'm trying to set up a fluid simulation to flow down this guys arm but it keeps ending up looking like this. Is there something I need to apply to make it not do this? Additionally, I can't seem to ...
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1answer
62 views

Problem with Fluids Tespassing Obstacles (bottles, cauldrons)

I have problems with physics. I modeled a bottle and I duplicated part of the bottle for the liquid. The liquid has a face on top so it is closed. The bottle is open on top. I added a cube for the ...
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1answer
86 views

Fluid simulation pours into the cup in a box shape and won't spill

I was working with the fluid simulator in Blender, and I wanted to make an animation where water flows into a cup and spills out. When I bake the fluid it pours into the cup in a box shape, even if ...
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1answer
46 views

Strange ladder effect on fluid

I have an issue I seem to keep coming across with the fluid simulation; I seem to be generating a strange 'ladder effect' where the fluid spreads out regular intervals as shown in the image below. ...
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1answer
34 views

Fluid smulation start Time

l want to make a water simulation. The fluid simulation should start after 600 frame but when l setup to simulation it starts immediately at frame one and l want it to start at frame 600. how can l ...
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1answer
57 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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1answer
60 views

ReBake a fluid Simulation?

Following problem: I have a fluid animation which works after being baked. Now I change some detail, the inflow velocity or the inflow type for example, but when I hit the bake button again the ...
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1answer
240 views

Fluid simulation and animation

https://www.instagram.com/p/Ba0fhHGAXxn/?taken-by=dkpatel25 As seen in above video I made the man using "control" property from Fluid simulation. How can I make the man walk or animate in any kind ...
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1answer
35 views

Fluid sim problrms :C

Ok guys, Im not sure, if i understanded the basic system of fluid simulations in blender. So to my case, this hemisphere is assigned as fluid, the bowl as obstacle. Now I would assign the box as ...
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1answer
779 views

Fluid is not generated

Following few videos on youtube, I try to create a very simple fluid animation: Creating a cube for domain Creating a circle and change Fill Type to Triangle fan. Placing circle inside the cube In ...
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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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1answer
145 views

How to pause/continue a FluidSim without Stopping the Simulation?

Basically, I'm doing a fluid simulation that needs to stop at one frame and continue 50 frames later. I'm doing this by keyframing the "Enable" toggle on the Inflow object ON and OFF. However, every ...
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1answer
43 views

FlipFluids & Ocean modifier as displacement. Baked frames in 3D view show all movements but rendered animation not. Manual keyframe ok. Any solution?

I have created a FlipFluids simulation in Blender 2.81 ( 2019-11-25 21:45) and added an Ocean modifier in displacement mode to the fluid_surface. Then I have baked the complete sim from within ...
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1answer
73 views

When using Flip Fluids and enable whitewater any Foam Spray or bubble appear as these icospheres

I have a problem when enabling the whitewater in the Flip Fluids addon. I get these big icospheres that I don't know how to fix. I've changed a lot of domain settings and it doesn't make any ...
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1answer
359 views

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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2answers
303 views

Converting Particles Into Fluid

I wanted to ask if there is a way to convert a particle system to a fluid? Is it possible?
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0answers
10 views

Smoke jet simulation? [duplicate]

I would like to animate a jet of smoke as in this video clip (from the movie Interstellar). Here's a short preview: Note the important elements are: The smoke is translucent The smoke is very fast ...
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0answers
45 views

Waterfall Simulation looks terrible

Why looks my waterfall so terrible. The mesh isnt even stick together. It splits to often and i cant figure out why. I also backed with 300 but it doesnt matter. The splits are so annyoing unrealistic....
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1answer
188 views

Cannot run simulation for smoke and fluid

I've been trying to render smoke and fluid simulations, but can't manage to get the results I'm seeking. The first problem is that the smoke and fluid don't simulate. The second problem is that the ...
4
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1answer
239 views

Displaying airflow inside of an engine model

Okay so basically I have a model of an engine. The purple shows where all the gas and yes gas not liquid should go. It must collide and be held in by a couple moving parts. The first thing I tried ...
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2answers
291 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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0answers
22 views

Need help on moving multiple rendered images(frames) over a stationary plane

I created a dry fountain animation using fluid physics. The chosen objects were a cube(domain), cone(inflow) and a plane(as an obstacle). I baked them to create the fountain. Later I rendered the ...
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2answers
497 views

Fluid Domain disappears in cycles viewport render

I'm experiencing this weird behavior with a fluid domain. It looks like something is occluding the object whilst there's nothing else in the scene. Even if I apply the FluidSim modifier, I still ...
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0answers
21 views

Fluid animation seems to disappear in some frames

I wanted to create an commercial ad for a juice brand and was testing out fluid simulations.. for now my simulations seems to work properly but as I render the animation the fluid seems to disappear ...
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1answer
598 views

Fluid simulation : sometimes not properly baking?

I'm playing with fluid simulations (Blender 2.78b). There is something quite odd. When I bake my fluid, sometimes it works, sometimes it acts as if some parameters (inflow velocity ? speed ?) were ...
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0answers
13 views

How to make a text coming-up-out of water simulation?

I'm working on a project for school, and I want to make a simulation of some text rising up out of some water, with water dripping from it, sliding off of it, etc. I've already tried finding ...
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0answers
16 views

How to Make Custom Mesh Hollow/Empty? [duplicate]

I am new to blender and trying to create a custom mesh (specifically, a trough to hold a fluid, see image). I have deleted all the edges on the top of the mesh, yet neither fluids nor meshes can enter....
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1answer
48 views

Blender Fluid Simmulation: How to turn on and off the fluid appearing from inflow?

I am working on a tea set animation where the teapot pours tea in a teacup. Now the issue is the fluid starts emitting from the inflow right from the first frame. I checked for an earlier post ...