Need Help With 3 Fluid Questions


1. How to Smooth out Jaggies on Edge of Fluid
I have a fluid that is the consistency of melting butter.
Anyways I want to smooth out the jaggies on the left side of the fluid but I am not sure what setting is causing the jaggies. I am pretty sure that it is not the “obstacle” that is causing the fluid to get the jagged edge. My obstacle is purposely set at an angle so the fluid runs off it.

I have been adjusting my fluid settings to see if I can get rid of the jagged edges but no matter what I try they remain. If anyone has experienced this or has any ideas on how to fix this I would appreciate it.

Final Render : 80
Base: 1.000
Exponent: 1
Grid Levels: -1
Compressibility: 0.005
Subdivisions: 4
Partial Slip: 0.800

2. How Do I Get The Fluid to Pour Out Continuously
I have seen Blender fluid simulations where the fluid is pouring out in a continuous stream. If the fluid “Volume” is a small cube how do you get the fluid to pour out more fluid than the volume of the cube?

3. How Do I Get a Consistency of Flowing Chocolate
I can get the fluid to a viscosity of oil or water where it splashes a bunch of droplets (not what I want) or I can get it to a viscosity of thick sludge that flows over the side of the obstacle as separate drops of fluid, but I can’t get a consistency of liquid chocolate so it flows as one volume when it flows over the side of the obstacle.

I’ve tried every combination of settings and I’m starting to pull my hair out. Any suggestions or settings that help with this?

  1. Final render should be like 150 - 200. It will take time to bake, but give a better result… Subdivisions - 2. Also if you are creating still image then you can achieve smoothness with the sculpt brushes…
  2. Instead of assigning a mesh as a fluid assign it as inflow… You will get continuous flow of fluid…
  3. I think this will get solved when you have a continuous flow of fluid…


Thanks. No this is and animation. I did as you said and read the whole fluid wiki but when I set my object to “inflow” the fluid is not coming from the object but is appearing on the ceiling of the domain and flowing down. How come it isn’t flowing form the inflow object?

Thanks JuanJose

Paint guy, may I suggest moving all water objects: fluid, inflow, outflow, atleast 0.5 BU away from the edge of the domain and try again

Still nOt resolved the problem below.

Deleting the content of the “Bake” directory is a destructive way to achieve this. Be careful if more than one simulation uses the same bake directory (be sure they use different filenames, or they will overwrite one another)!

Question 1
I have a number of different .blend fluid files and they all have the same directory name of: “//cache_fluid” so is this why when I open up a .blend file with fluids and preview the simulation it previews the last bake even if it was a baked from a different file?

Is it because I have the same directory name for each file that it previews the last bake I did? If I want to see the “correct” preview for a particular file do I just give each .blend file a specific folder to bake to?

Perform the actual fluid simulation. The Blender GUI will freeze and only display the current frame that is simulated. Pressing Esc will abort the simulation. Afterwards two “.bobj.gz” (one for the Final quality, one for the Preview quality), plus one “.bvel.gz” (for the Final quality) will be in the selected output directory for each frame.

Question 2
When I open the folder I baked the simulation to I see two files named .bobj.gz and .bvel.gz but how do I use them? can I open the files and look at them like a normal rendered still image?


You should always create a separate cache folder for each fluid simulation you create. Otherwise, you will waste tons of your time and/or end up going crazy.

Regarding your second question, those files contain your fluid’s shape and motion data. You can reuse that information in other scenes by pointing their fluid domains to the cache folder where those files are stored.