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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Fluid simulation gives a obscured render when active fluid particles are absent

v3.1.2 I'm arranging a scene where a water fountain will pulse on and then be off for a while. At some points, there may be no water particles inside the simulated Domain. However, the rendering at ...
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Resume cached fluid bake in python

I am finding this useful to clean up some fluid cache files and re-simulate from where I change the flow on a single source that I'm adjusting for Initial Velocity. The flow is set to be enabled on ...
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Fluid simulation (liquid) flows into certain directions / areas of domain. Any solution?

I am working on a scene where I must use a fluid simulatin (liquid). I have set the domain, inflow and collision. When I bake the simulation, the liquid only flows into certain directions (in this ...
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Control Water Shape in Mantaflow

I'm looking for a way for to 'shape' water into a specific mesh shape - exactly like what this post does, but in a more modern version of Blender. I did find this, but was very disappointed to see ...
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Flip Fluids Not Updating Per Frame

Edit: Problem solved. Turns out it was a conflict with the Photographer addon. Disabling Photographer lets the Fluids update frame by frame in the render. I've made a fluid sim using the latest ...
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Water simulation doesn't show shaded mesh in viewport

In Blender 3.1 I can't find the option to see my shaded liquid mesh in the viewport. All I see are coloured particles (left image), but as you can see on my right image it renders fine. How can I see ...
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Can I reuse / re-import fluid cache files into Blender?

While making multiple fluid simulations I had saved multiple cache folders with the "data" and "config" folders. Is there a way that I can reuse the cached data to import back the ...
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Flipped Normals cause Fluid to spill

I tried to make an animation with fluids for the first time, and I modeled the jug without tutorial after one I have myself. I used a cylinder as the geometry for the fluid, but the moment I started ...
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How to apply the physics fluid properties?

Can somebody please instruct me on what to do here? I haven't had any results for 2 weeks. Here's what I've already tried: Quick Effects - It doesn't give me the results I'm looking for. Neither can ...
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Fluid simulation not fluid: no liquids coming from inflow or dropping from geometry

I am attempting to make a not-so-accurate tsunami from a flipper in my scene and water. I have watched hours of YouTube videos on Blender fluid simulations. The scene is from a mesh created by ...
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Unexpected gradient behavior with the Particle Info Node (index and age) and fluid/liquid simulation

My goal is to get a gradient from a baked fluid/liquid simulation, ideally with a baked mesh. Below is a rough example of that idea. But when I use a Particle Info node Index, the gradient has this ...
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Strange Travel Path in Quick Smoke Simulation

Every time I run a quick smoke simulation regardless whether it is in a new or existing file it creates this strange travel path where it goes off to the side and looks like it gets cut of on the top. ...
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fluid simulation question

initially i wanted a cylinder shaped tank be filled with liquid. so i followed this tutorial:https://www.youtube.com/watch?v=3ud6Hozy0vw&t=315s it basically goes as: flip the normals - put the ...
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How to animate particles flow with distortion on the surface of the object?

My first post here. I have problem to solve - generate particle animation like in this photo (using Animation Nodes): but on the surface of this 3d car shell: Does anyone know how to achieve such ...
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Effector not working when parented to bendy bone

I'm trying to create an animation of a hose with water coming out of the end. I've created the effector and inflow and then parented it with automatic weights to a bendy bone. After running The ...
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Liquid simulation - wrong flowing direction

I try to make a liquid simulation but find a problem that can not fix. As the picture shows, the liquid flow in the wrong direction and I want it to be a straight line Here is the setting. please ...
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Ground shadow is rendering out volume voxels instead of smoke shadow

I am rendering out a simple fluid (smoke) simulation, and when I render it out, instead of the smoke's shadow rendering out, the shadow is the voxel blocks that house the smoke simulation (See image 1)...
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Boolean Intersect - Creating slices instead of solids

I am trying to fill a bottle with a liquid. I modeled the bottle (added solidy modifier) then duplicated, scaled down, and separated the new object (labeled: liquid). I added a plane and boolean ...
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Is there a way to make the liquid stick to a mesh ? Instead of sliding off

I'm trying to animate a chocolate pouring on top of an ice cream which is rotating and moving. I tried all sorts of settings on the liquid mesh but every time the ice cream makes the slightest move, ...
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Fluid simulation not working after scaling the domain

So I just notice that If I scale up the domain of the fluid simulation and bake again the fluid it doesn't work... I tried applying the scale and I tried without applying same thing. Is there any ...
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Blender 3.0 fluid simulation not working right for me

As you will see in the image I attached, I have all the settings right (as far as I know) under my domain liquid. Even so, I am still stuck with just particles/spheres and no actual liquid. I've been ...
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How do I remove the Blender FLIP Fluids addon demo watermark?

I have recently purchased the FLIP Fluids addon however the demo watermark still remains in my scene. However I have deleted the demo and updated to the version I have purchased. Is there a way to ...
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How to I make the water in my FLIP Fluid simulation roll off the sides of my sub?

How do I prevent the water on the sub from splashing upwards and instead roll off the sides of the sub? I have included an image of right before everything goes wrong, what I want is for the water to ...
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Nothing Happens with fluid simulation

I was learning from CG Geek's animation tutorial from this video at 8:45. When I played the animation, nothing happened at all to my creation, no signs of high viscous water trickling down the sphere. ...
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Is it possible to have physics affect fluid sim

What I want to simulate is ice cubes falling in a drink, I can use cube as col for physics for falling in the glass but I don't know if it's possible to have it affect the fluid as well, It falls but ...
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Pouring two types of fluid

I am getting to get familiar with blender and there is a huge question regarding fluid simulation. In a short animation I'd like to combine two different liquids, one which is already in a "cup&...
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Points not rendering in Cycles

When working with points in Geometry Nodes, I've been unable to get them to render in Cycles. This feature was introduced in 3.1, which I have. I am using a Mesh to Point node with a fluid simulation, ...
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Can I make my smoke look white like snow?

I have a smoke simulation and I want to make it look white like snow but, even when I turn the color to pure white, it looks dark like smoke (using the "Principled Volume" shader). Is there ...
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Can I make particles emit smoke?

I have a simple mesh emitting Icospheres into my scene. How do I (if possible) make each little Icosphere in my scene emit smoke?
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Can a particle simulation from the particle system modifier be transferred into the Physics Domain Fluid Bake?

Blender 3.1 Thanks. For example there might be no bake in the Physics Panel. Perhaps just insertion of data and bake the mesh. Alternatively ... some tool that has a Bake Mesh on it for the Particle ...
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Can Blender be instructed to perform a frame range mesh bake a la mode of the Render Animation?

Render Animation can render a range of frames with a step. Settings are in the Output Properties Panel. Start End Step. [Update] Preliminary Yes. I changed frames start field in the cache panel and ...
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How does one use Fluid Simulation offset number correctly? Blender 3.1

Desired Goal Use the offset in the Fluid Simulation Panel to read in 1 or more frames for the 3D View Window. Reuse the mesh data created from a fluid simulation. A Read Only status is desired. ...
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Is Resume of Fluid Simulation possible? Blender 3.1 Crashes Party Often

Sometimes fluid simulation completes sometimes it does not. Example 250 out of 300 frames are found in the cache. Estimated success rate 80% Sometimes fluid simulation pause and resume works .. ...
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How to get shrink these Colored Balls over the Liquid? [closed]

I'm doing a fluid simulation right now, and for some reason these particle previews are blocking me from seeing the mesh; which is fine underneath. I was trying to make these spheres smaller, but I ...
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Replace this Slime In Scene

I've just dived into Blender over the last few weeks in order to gain some skills to solve a filmic problem. I of course did the Donut tutorial and really enjoyed the process. Here's my question: I ...
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2 votes
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Make fluid simulation go up instead of down

Hello, I want to make it seem like my fluid is coming from the well and overflowing... so far I've tried hiding the flow/fluid emitter object into the well but the fluid doesn't go beyond the brim of ...
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Fluid Sim: unable to achieve constant stream

I'm currently working on a coffee machine and wanted to take the chance and dive deeper in fluid simulations. I now tried every parameter for days, but I only get results that look like some gnome is ...
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How to scale smoke simulation in blender?

I'm trying to create a large smoke but i can't the smoke just won't move at all . what I'm trying to do in details : i create a cube with 1000by1000by1000 meters dimensions , and from object > ...
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Error Simulation Fluid, Domain scale and penetration Mesh problem

I'm trying to make a water source on a promontory, I've tried several tutorials but the problem remains the same. The liquid in addition to escaping from the channel, on the one hand penetrates the ...
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How to make fluid sim work with smaller objects?

enter image description here I cant figure out how to get fluid sim to work with smaller objects. I can only increase the resolution to a certain point before my computer crashes. I keep messing with ...
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Blender Fluid simulation for larger areas?

I have a room with a pipe on the ceiling that water has to drip down from. For this reason I have to make the domain accordingly to the bottom that the water comes up and splashes there. But because ...
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Liquid Simulation with small Emitter in large Domain?

My problem is that my emitter only emits liquid when the emitter is big or the domain small enough. But I need a very small emitter that is supposed to squirt water within a large domain. Is that ...
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2 votes
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Gravity is relative and not absolute?

I was messing around with fluid simulations, and I noticed that if I rotate the domain, the direction of gravity rotates with the z axis of the domain. Can I make it so that gravity is always pointing ...
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1 vote
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Convert Mantaflow or other sims to mesh/get specific frame from sim?

Is there a way to convert simulations into mesh? Freeze on a specific frame you like, bake it/convert it to geometry so you can 3D print it? I'm asking specifically about water.
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Can we visualize pressure drop regions too in blender ? ( In fluid simulation )

Is there any possible way to have a look at pressure drop regions too in Blender Fluid simulation ?
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Fire Simulation Hitting Border

Trying to make a torch, but the fire simulation keeps going to the top of the border. How do I shorten the flame?
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Purchased object wont work in quick liquid simulation

I bought a brick on blendermarket and want to melt it with a simulation (quick effects/quick liquid). But for some reason, it does not work with this object. I have tested two other objects (a cube ...
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When Effector animate, amount of liquid particles decrease

After Fulfill the vessel with liquid. I have to add rotating blades to the vessel. and applied it, effector. when blades are rotating, the amount of liquid particles is decreases. How to solve this ...
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Why doesn't my fluid simulation look realistic?

I created a fluid simulation for nearly one week. A soda can that pours water into an invisible glass. But the water does not look realistic. Why is this? Settings: Resolution Divisions: 128 Mesh: ...
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Blender Fluid Simulation With Moving Container

For this project, I'm trying to have a rigged character move while holding a bottle (simply parented to the hand bone). I see many posts on this website referring to issues with fluid sims that are ...
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