Body Force to "fat"

[pipe_mm]

Hello

I am experimenting with the very cool body force and its my goal to get the shape of our PIPE logo.
too bad I cannot get the particles to get close enough onto/into the tube.

https://youtu.be/oz24Mgf-vd0

https://youtu.be/uc6BBh636l0

- solid is off for the tube object
- I tried different strengths 20-800

thnx for support
Martin

[Neilg]

it looks like they are trying to stick to the outside. what happens if you flip the normals?

[kostadin.petkov]

I do not think that inverting the normals could help you. Actually inverting normals isn't advisable as it will confuse the force about what is inside and what is outside of the geometry.

I guess you could try:
- decreasing the "inside spreading" of the body force. high values here make the fluid a bit more "fluffy" when it is inside the object. ( I suggest you start with that one ).
- increasing the "strength" of the body force,
- finally (if the suggestions above do not help in your case) you could try adjusting the "Isosurface level" in the "Rendering" rollout. This will make the fluid appear slimmer.

As a side node I'm not sure if you resolution is high enough.

Hope that helps ^_^

[pipe_mm]

thnx Kostapin will give it a try next week and come back with my result

[rporter8555]

Pardon me for jumping in, but maybe this idea will trigger something else...
I made an over-thick water simulation with good velocity, then used a geometric cutter during render to obtain the final pipe-shaped water flow. Result was clean and smooth surface water moving through an invisible pipe.

[pipe_mm]

Hello
@Kostadin: with inside spreading you mean the internal damp?
can't find a "inside spreading" in the body force node

@rporter: thnx for this solution. I think this works great for pipes. but in this case the fluid has to settle onto the tubes, so it would look strange(pop) when we cut the shape at one point.

thnx
Martin

[Svetlin.Nikolov]

Hey,

Kostadin meant "Spread Speed". However, if flipping the normals fixes the problem, you should cehck if your geometry did not have flipped normals in the first place. If not, flipping the normals might be a bit of a hack, so you should watch out if weird things start to happen...

Cheers!